How do I register an IMMERGAS MAGIS M with BoilerTag?

Registering an IMMERGAS MAGIS M with BoilerTag is straightforward. After installation, scan the QR code on the BoilerTag sticker. The system will pre-fill the appliance details, including the model. You then confirm the installation date and your Gas Safe number. This creates a permanent, publicly viewable service log for every future maintenance event. The first 12 BoilerTag stickers are free for engineers. Order free BoilerTag stickers from the engineer dashboard.

What is the IMMERGAS MAGIS M?

The IMMERGAS MAGIS M is an inverter-driven monobloc air-source heat pump range, available in capacities from 4kW to 30kW, using R32 refrigerant and capable of delivering a maximum flow temperature of 65°C. It is designed for UK domestic heating and hot water, suitable for both new installations and retrofits.

What refrigerant does the IMMERGAS MAGIS M use and what is its GWP?

The IMMERGAS MAGIS M heat pump series uses R32 refrigerant. R32 has a Global Warming Potential (GWP) of 675. This is significantly lower than older refrigerants like R410A, making R32 a more environmentally conscious choice for heat pump applications in the UK market.

Does the IMMERGAS MAGIS M require a buffer tank?

Yes, the IMMERGAS MAGIS M heat pump requires a buffer tank as part of its hydraulic installation. This is essential for system stability, preventing short-cycling of the compressor, and ensuring consistent heat delivery to the heating circuit. It also helps manage defrost cycles effectively.

What is the operating temperature range for the IMMERGAS MAGIS M?

The IMMERGAS MAGIS M heat pump is designed to operate in a wide range of outdoor temperatures, functioning effectively down to -25°C. It can deliver a maximum flow temperature of 65°C to the heating system, making it suitable for various heating demands and emitter types in the UK.

What does fault code E8 mean on the IMMERGAS MAGIS M?

Fault code E8 on the IMMERGAS MAGIS M indicates a water flow fault. This can be caused by closed shut-off valves, a dirty water filter, air in the system, low water pressure (below 1 bar), or an insufficient pump speed. Engineers should check these hydraulic circuit components and ensure proper system de-aeration.

What are the minimum installation clearances for the IMMERGAS MAGIS M outdoor unit?

The IMMERGAS MAGIS M outdoor unit requires specific minimum clearances for optimal performance and service access. These are 300mm to the sides, 300mm to the rear, and 600mm above the unit. Adhering to these clearances ensures adequate airflow and prevents performance degradation.

What are the annual service requirements for the IMMERGAS MAGIS M?

Annual service for the IMMERGAS MAGIS M includes checking water pressure, cleaning the water filter, and inspecting the water safety valve. Electrical switchgear must be visually inspected, and contactors checked with a tester. Additionally, the glycol concentration and pH value in the water circuit should be recorded, and an annual refrigerant leak check by F-gas certified personnel is mandatory.

Are IMMERGAS MAGIS M heat pumps single-phase or three-phase?

The IMMERGAS MAGIS M heat pump range includes both single-phase and three-phase models. Smaller capacity units, such as the MAGIS M4 to MAGIS M16, are typically single-phase. Larger models, including the MAGIS M12T up to MAGIS M30, are designed for three-phase electrical supplies to accommodate their higher power demands.

What does fault code E0 mean on the Alpha MAGIS M22?

Water flow fault (after E8 has been displayed 3 times) Likely causes: The cable circuit is short-circuited or open. Reconnect the cable properly.; The water flow rate is too low.; The water flow switch is faulty, the switch opens or closes continuously, replace the water flow switch..

What does fault code E1 mean on the Alpha MAGIS M22?

The phase loss or the neutral cable or the live cable are connected inversely (only for three-phase unit) Likely causes: Check that the power cables are connected stably, to avoid the phase loss.; Check the sequence of power cables, swap any sequence of two of the three power cables..

What does fault code E2 mean on the Alpha MAGIS M22?

Communication fault between the control panel and the hydraulic module Likely causes: The wire between the control panel and the unit is not connected. Connect the wire.; The sequence of communication cables is incorrect. Reconnect the cable in the right sequence.; If there is a high magnetic field…

What does fault code E3 mean on the Alpha MAGIS M22?

Fault of the final temperature sensor of the outlet water (T1) Likely causes: Check the sensor resistance.; The connector of sensor T1 is loose. Reconnect it.; The connector of sensor T1 is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive.; Fault of sensor…

What does fault code E4 mean on the Alpha MAGIS M22?

Fault of domestic hot water storage tank temperature sensor (T5) Likely causes: Check the sensor resistance.; The connector of sensor T5 is loose. Reconnect it.; The connector of sensor T5 is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive.; Fault of senso…

What does fault code E5 mean on the Alpha MAGIS M22?

Error of the refrigerant temperature sensor exiting the condenser (T3) Likely causes: Check the sensor resistance.; The connector of sensor T3 is loose. Reconnect it.; The connector of sensor T3 is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive.; Fault of…

What does fault code E6 mean on the Alpha MAGIS M22?

Error of room temperature sensor (T4) Likely causes: Check the sensor resistance.; The connector of sensor T4 is loose. Reconnect it.; The connector of sensor T4 is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive.; Fault of sensor T4, replace it with a new…

What does fault code E7 mean on the Alpha MAGIS M22?

Fault of buffer tank temperature sensor (Tbt1) Likely causes: Check the sensor resistance.; The connector of sensor Tbt1 is loose. Reconnect it.; The connector of sensor Tbt1 is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive.; Fault of sensor Tbt1, replac…

What does fault code E8 mean on the Alpha MAGIS M22?

Water flow fault Likely causes: Check that all the shut-off valves of the water circuit are completely open.; Check whether the water filter needs to be cleaned.; Chap. 9.5 Filling with water.; Make sure there is no air in the system (de-aeration).; Check the pressure of the water. The water pressu…

What does fault code E9 mean on the Alpha MAGIS M22?

Error of compressor intake temperature sensor (Th) Likely causes: Check the sensor resistance.; The connector of sensor Th is loose. Reconnect it.; The connector of sensor Th is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive.; Fault of sensor Th, replace…

What does fault code EA mean on the Alpha MAGIS M22?

Error of compressor drain temperature sensor (Tp) Likely causes: Check the sensor resistance.; The connector of sensor Tp is loose. Reconnect it.; The connector of sensor Tp is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive.; Fault of sensor Tp, replace i…

What does fault code Eb mean on the Alpha MAGIS M22?

Error of solar panel temperature sensor (Tsolar) Likely causes: Check the sensor resistance.; The connector of sensor Tsolar is loose. Reconnect it.; The connector of sensor Tsolar is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive.; Fault of sensor Tsolar…

What does fault code EC mean on the Alpha MAGIS M22?

Error of low temperature sensor (Tbt2) of the thermostat manifold Likely causes: Check the sensor resistance.; The connector of sensor Tbt2 is loose. Reconnect it.; The connector of sensor Tbt2 is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive.; Fault of…

What does fault code Ed mean on the Alpha MAGIS M22?

Error of inlet water temperature sensor (Tw_in) of plate heat exchanger Likely causes: Check the sensor resistance.; The connector of sensor Tw_in is loose. Reconnect it.; The connector of sensor Tw_in is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive.; F…

What does fault code EE mean on the Alpha MAGIS M22?

EEPROM fault of the main control board of hydraulic module Likely causes: The EEprom parameter is in error, rewrite the EEprom data.; The EEprom component is damaged, replace the EEprom component.; The main control board of the hydraulic module is damaged, replace it with a new PCB..

What does fault code EP mean on the Alpha MAGIS M22?

Leakage fault on tank booster heater (TBH) Likely causes: Check device connected to the TBH outputs..

What does fault code P0 mean on the Alpha MAGIS M22?

Low pressure protection switch Likely causes: The system is without refrigerant volume. Charge the refrigerant at the right volume.; In heating mode or in DHW mode, the external heat exchanger is dirty or something is blocked on the surface. Clean the external heat exchanger or remove the obstructi…

What does fault code P1 mean on the Alpha MAGIS M22?

High pressure protection switch Likely causes: Heating mode, DHW mode: 1. The water flow is low; the temperature of the water is high, if there is air in the water system. Release the air. 2. The water pressure is lower than 0.1 MPa, load the water to leave the pressure in the range 0.15-0.2 MPa. 3…

What does fault code P3 mean on the Alpha MAGIS M22?

Protection against compressor overcurrent Likely causes: The same reason as for P1.; The supply voltage of the unit is low, increase the supply voltage to the required range..

What does fault code P4 mean on the Alpha MAGIS M22?

Protection against flow temperature of the compressor too high Likely causes: The same reason as for P1.; The system is without refrigerant volume. Charge the refrigerant at the right volume.; The sensor Tw_out temp. is loose. Reconnect it.; The sensor T1 temp. is loose. Reconnect it.; The sensor T…

What does fault code P5 mean on the Alpha MAGIS M22?

High temperature difference between water inlet and water outlet of the plate heat exchanger. (Tw_out - Tw_in) Likely causes: Check that all the shut-off valves of the water circuit are completely open.; Check whether the water filter needs to be cleaned.; Chap. 9.5 Filling with water.; Make sure t…

IMMERGAS MAGIS M Heat Pump — Specs & Fault Codes

Engineer's overview

The IMMERGAS MAGIS M is an inverter-driven monobloc air-source heat pump series, utilising R32 refrigerant, which has a Global Warming Potential (GWP) of 675. This range offers various models, from 4kW up to 30kW, catering to diverse property sizes and heating demands. All units in the series operate on a 50Hz frequency, with electrical phases varying by model to accommodate single-phase or three-phase installations. The maximum power consumption for the largest models is 14.5kW, protected by a 30A MCB rating, ensuring robust electrical safety.

Designed for resilient performance in the UK climate, the MAGIS M can operate effectively down to an outdoor temperature of -25°C, while delivering a maximum flow temperature of 65°C to the heating system. This high flow temperature capability supports integration with various emitter types. Hydraulic connections require a 32mm pipe size and maintain an operating pressure between a minimum of 1 bar and a maximum of 10 bar. A minimum water flow rate of 27 litres per minute is specified for optimal heat transfer. Installation mandates a buffer tank for system stability and efficiency, preventing short-cycling and ensuring consistent heat delivery.

Physical dimensions of the outdoor unit are standardised across the range, measuring 1558mm in height, 1385mm in width, and 528mm in depth, with a weight of 206kg. These dimensions require specific installation clearances: 300mm to the sides and rear, and 600mm above, for proper air circulation and service access. The unit features automatic defrost functionality to ensure continuous operation and efficiency in colder conditions, minimising manual intervention.

Control options include a dedicated control panel, with integrated weather compensation for optimised performance based on external conditions. The system also offers Modbus connectivity and is smart grid ready, facilitating advanced energy management and integration with building management systems. Routine maintenance is crucial for longevity and efficiency, with an annual service interval recommended. This includes checks on water pressure, thorough water filter cleaning, and inspection of electrical switchgear. Furthermore, an annual refrigerant leak check is mandatory, requiring F-gas certified personnel to ensure compliance and system integrity. Fault codes such as E8 (water flow fault) or P1 (high pressure protection) provide specific diagnostic information to aid engineers in rapid troubleshooting.

MAGIS M22 fault codes

Every fault code listed in the manufacturer brochure, with likely causes and engineer actions. Each code has a permalink — paste a URL like https://www.boilertag.com/heat-pumps/alpha/magis-m22#fault-e0 to jump straight to the entry.

Complete list of fault codes for this Alpha MAGIS M22
Code	Meaning	Details
E0	Water flow fault (after E8 has been displayed 3 times) Show causes & actions Likely causes The cable circuit is short-circuited or open. Reconnect the cable properly. The water flow rate is too low. The water flow switch is faulty, the switch opens or closes continuously, replace the water flow switch. Reset procedure Reset the safety device by switching the unit off and back on.	Details
E1	The phase loss or the neutral cable or the live cable are connected inversely (only for three-phase unit) Show causes & actions Likely causes Check that the power cables are connected stably, to avoid the phase loss. Check the sequence of power cables, swap any sequence of two of the three power cables. Reset procedure Reset the safety device by switching the unit off and back on.	Details
E2	Communication fault between the control panel and the hydraulic module Show causes & actions Likely causes The wire between the control panel and the unit is not connected. Connect the wire. The sequence of communication cables is incorrect. Reconnect the cable in the right sequence. If there is a high magnetic field or interference with high power, such as lifts, large power transformers, etc. Add a barrier to protect the unit or move the unit to another position. Reset procedure Reset the safety device by switching the unit off and back on.	Details
E3	Fault of the final temperature sensor of the outlet water (T1) Show causes & actions Likely causes Check the sensor resistance. The connector of sensor T1 is loose. Reconnect it. The connector of sensor T1 is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive. Fault of sensor T1, replace it with a new sensor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
E4	Fault of domestic hot water storage tank temperature sensor (T5) Show causes & actions Likely causes Check the sensor resistance. The connector of sensor T5 is loose. Reconnect it. The connector of sensor T5 is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive. Fault of sensor T5, replace it with a new sensor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
E5	Error of the refrigerant temperature sensor exiting the condenser (T3) Show causes & actions Likely causes Check the sensor resistance. The connector of sensor T3 is loose. Reconnect it. The connector of sensor T3 is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive. Fault of sensor T3, replace it with a new sensor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
E6	Error of room temperature sensor (T4) Show causes & actions Likely causes Check the sensor resistance. The connector of sensor T4 is loose. Reconnect it. The connector of sensor T4 is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive. Fault of sensor T4, replace it with a new sensor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
E7	Fault of buffer tank temperature sensor (Tbt1) Show causes & actions Likely causes Check the sensor resistance. The connector of sensor Tbt1 is loose. Reconnect it. The connector of sensor Tbt1 is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive. Fault of sensor Tbt1, replace it with a new sensor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
E8	Water flow fault Show causes & actions Likely causes Check that all the shut-off valves of the water circuit are completely open. Check whether the water filter needs to be cleaned. Chap. 9.5 Filling with water. Make sure there is no air in the system (de-aeration). Check the pressure of the water. The water pressure must be >1 bar. Check that the pump speed is set at the maximum speed. Make sure that the expansion vessel is not damaged. Check that the pressure drops of the hydraulic circuit are not too high for the pump (Chap. 10.4 The circulation pump). If this error occurs during defrosting (during space heating or domestic hot water heating), make sure that the power supply of the backup heater is wired correctly and that the fuses are not blown. Check that the fuse of the pump and the fuse of the PCB are not blown. Reset procedure Reset the safety device by switching the unit off and back on.	Details
E9	Error of compressor intake temperature sensor (Th) Show causes & actions Likely causes Check the sensor resistance. The connector of sensor Th is loose. Reconnect it. The connector of sensor Th is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive. Fault of sensor Th, replace it with a new sensor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
EA	Error of compressor drain temperature sensor (Tp) Show causes & actions Likely causes Check the sensor resistance. The connector of sensor Tp is loose. Reconnect it. The connector of sensor Tp is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive. Fault of sensor Tp, replace it with a new sensor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
Eb	Error of solar panel temperature sensor (Tsolar) Show causes & actions Likely causes Check the sensor resistance. The connector of sensor Tsolar is loose. Reconnect it. The connector of sensor Tsolar is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive. Fault of sensor Tsolar, replace it with a new sensor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
EC	Error of low temperature sensor (Tbt2) of the thermostat manifold Show causes & actions Likely causes Check the sensor resistance. The connector of sensor Tbt2 is loose. Reconnect it. The connector of sensor Tbt2 is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive. Fault of sensor Tbt2, replace it with a new sensor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
Ed	Error of inlet water temperature sensor (Tw_in) of plate heat exchanger Show causes & actions Likely causes Check the sensor resistance. The connector of sensor Tw_in is loose. Reconnect it. The connector of sensor Tw_in is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive. Fault of sensor Tw_in, replace it with a new sensor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
EE	EEPROM fault of the main control board of hydraulic module Show causes & actions Likely causes The EEprom parameter is in error, rewrite the EEprom data. The EEprom component is damaged, replace the EEprom component. The main control board of the hydraulic module is damaged, replace it with a new PCB. Reset procedure Reset the safety device by switching the unit off and back on.	Details
EP	Leakage fault on tank booster heater (TBH) Show causes & actions Likely causes Check device connected to the TBH outputs. Reset procedure Reset the safety device by switching the unit off and back on.	Details
P0	Low pressure protection switch Show causes & actions Likely causes The system is without refrigerant volume. Charge the refrigerant at the right volume. In heating mode or in DHW mode, the external heat exchanger is dirty or something is blocked on the surface. Clean the external heat exchanger or remove the obstruction. The water flow is too low in cooling mode. Increase the water flow. The electric expansion valve is blocked or the winding connector is loose. Touch the body of the valve and connect/disconnect the connector several times to make sure that the valve works properly. Reset procedure Reset the safety device by switching the unit off and back on.	Details
P1	High pressure protection switch Show causes & actions Likely causes Heating mode, DHW mode: 1. The water flow is low; the temperature of the water is high, if there is air in the water system. Release the air. 2. The water pressure is lower than 0.1 MPa, load the water to leave the pressure in the range 0.15-0.2 MPa. 3. Refrigerant volume overload. Recharge the refrigerant at the right volume. 4. The electric expansion valve is blocked or the winding connector is loose. Touch the body of the valve and connect/disconnect the connector several times to make sure that the valve works properly. Also install the winding in the right position. DHW mode: The storage tank coil is small. Cooling mode: 1. The protection of the heat exchanger has not been removed. Remove the protection. 2. The heat exchanger is dirty or something is blocked on the surface. Clean the heat exchanger or remove the obstruction. Reset procedure Reset the safety device by switching the unit off and back on.	Details
P3	Protection against compressor overcurrent Show causes & actions Likely causes The same reason as for P1. The supply voltage of the unit is low, increase the supply voltage to the required range. Reset procedure Reset the safety device by switching the unit off and back on.	Details
P4	Protection against flow temperature of the compressor too high Show causes & actions Likely causes The same reason as for P1. The system is without refrigerant volume. Charge the refrigerant at the right volume. The sensor Tw_out temp. is loose. Reconnect it. The sensor T1 temp. is loose. Reconnect it. The sensor T5 temp. is loose. Reconnect it. Reset procedure Reset the safety device by switching the unit off and back on.	Details
P5	High temperature difference between water inlet and water outlet of the plate heat exchanger. (Tw_out - Tw_in) Show causes & actions Likely causes Check that all the shut-off valves of the water circuit are completely open. Check whether the water filter needs to be cleaned. Chap. 9.5 Filling with water. Make sure there is no air in the system (de-aeration). Check the pressure of the water. The water pressure must be >1 bar (with cold water). Check that the pump speed is set at the maximum speed. Make sure that the expansion vessel is not damaged. Check that the pressure drops of the hydraulic system are not too high for the pump (Chap. 10.4 The circulation pump). Reset procedure Reset the safety device by switching the unit off and back on.	Details
P6	Inverter module protection Show causes & actions Likely causes The supply voltage of the unit is low, increase the supply voltage to the required range. The space between the units is too narrow for the thermal exchange. Increase the space between the units. The heat exchanger is dirty or something is blocked on the surface. Clean the heat exchanger or remove the obstruction. The fan does not work. The motor of the fan or the fan is damaged, replace it with a new fan or a new motor. Refrigerant volume overload. Recharge the refrigerant at the right volume. The water flow rate is low, there is air in the system, or the pump head is not sufficient. Release the air and select the pump again. The outlet water temperature sensor is loose or damaged, reconnect it or replace it with a new one. The storage tank coil is small. The wiring of the module or the screws are loose. Reconnect the wires and screws. The thermally conductive adhesive is dry or shied. Add some thermally conductive adhesive. The connection of the cables is loose or failed. Reconnect the cable. The drive board is faulty, replace it with a new one. If it already has been confirmed that the control system has no problems, then the compressor is faulty. Replace it with a new compressor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
P9	Fan protection Show causes & actions Likely causes Check the condition of the fan and of the fan motor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
Pb	Antifreeze protection Show causes & actions Likely causes The unit automatically returns to normal operation. Reset procedure Reset the safety device by switching the unit off and back on.	Details
Pd	High temperature protection of the outlet temperature of the refrigerant in the condenser Show causes & actions Likely causes The protection of the heat exchanger has not been removed. Remove the protection. The heat exchanger is dirty or something is blocked on the surface. Clean the heat exchanger or remove the obstruction. There is not enough space around the unit for thermal exchange. The fan motor is damaged, replace it with a new one. Reset procedure Reset the safety device by switching the unit off and back on.	Details
PP	The inlet water temperature is higher than the water outlet in heating mode. (Tw_in>Tw_out) Show causes & actions Likely causes Check the resistance of the two sensors. Check the two positions of the sensors. The connector of the cable of the water inlet/outlet sensor is loose. Reconnect it. The water inlet/outlet sensor (Tw_in/Tw_out) is damaged. Replace it with a new sensor. The four-way valve is blocked. Restart the unit to allow the valve to change direction. The four-way valve is damaged, replace it with a new valve. Reset procedure Reset the safety device by switching the unit off and back on.	Details
H0	Communication fault between the main control board of the hydraulic module and the main control board PCB B Show causes & actions Likely causes The cable does not connect the main control board PCB B and the main control board of the hydraulic module. Connect the cable. The sequence of communication cables is incorrect. Reconnect the cable in the right sequence. If there is a high magnetic field or interference due to high power, such as lifts, large power transformers, etc. Add a barrier to protect the unit or move the unit to another position. Reset procedure Reset the safety device by switching the unit off and back on.	Details
H1	Communication error between the inverter module PCB A and the main control board PCB B Show causes & actions Likely causes Check whether the two boards PCB A (inverter module) and PCB B (control board) are powered. Check whether the indicator light on the printed circuit of the inverter is on or off. If the light is off, reconnect the power cable. If the light is on, check the wiring connection between the PCB of the inverter module and the PCB of the main control board. If wiring is loose or damaged, reconnect the wiring or change with new wiring. Replace the main board (PCB B) and then the inverter module (PCB A). Reset procedure Reset the safety device by switching the unit off and back on.	Details
H2	Fault of outlet temperature sensor (T2) of refrigerant from the plate heat exchanger (liquid pipe) Show causes & actions Likely causes Check the sensor resistance. The connector of sensor T2 is loose. Reconnect it. The connector of sensor T2 is wet or there is water inside. Remove the water and dry the connector. Add waterproof adhesive. Fault of sensor T2, replace it with a new sensor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
H3	Fault of outlet temperature sensor (T2B) of refrigerant from the plate heat exchanger (gas pipe) Show causes & actions Likely causes Check the sensor resistance. The connector of sensor T2B is loose. Reconnect it. The connector of sensor T2B is wet or there is water inside. Remove the water and dry the connector. Add waterproof adhesive. Fault of sensor T2B, replace it with a new sensor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
H4	Protection for three times P6 (L0/L1) Show causes & actions The total number of times in which L0 and L1 appear in an hour is equal to three. See L0 and L1 for the fault management methods. Reset procedure Reset the safety device by switching the unit off and back on.	Details
H5	Fault of room temperature sensor (Ta) Show causes & actions Likely causes Check the sensor resistance. The sensor Ta is in the control panel. Fault of sensor Ta, replace with a new sensor or switch to a new panel, or reset Ta, connect a new Ta from the hydraulic module PCB. Reset procedure Reset the safety device by switching the unit off and back on.	Details
H6	Fault of fan motor Show causes & actions Likely causes Strong wind towards the fan, turn the fan in the opposite direction. Change the direction of the unit or create a guard to prevent the wind from going towards the fan. The fan motor is damaged, replace it with a new motor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
H7	Main circuit voltage protection fault Show causes & actions Likely causes If the power supply input is within the available range. Switch on and off several times quickly and in a short amount of time. Keep the unit off for more than 3 minutes after ignition. The part of the circuit of the main control board is faulty. Replace with a new main PCB. Reset procedure Reset the safety device by switching the unit off and back on.	Details
H8	Fault of pressure sensor Show causes & actions Likely causes The connector of the pressure sensor is loose, reconnect it. Fault of pressure sensor. Replace it with a new sensor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
H9	Fault of zone 2 water temperature sensor (Tw2) Show causes & actions Likely causes Check the sensor resistance. The connector of sensor Tw2 is loose. Reconnect it. The connector of sensor Tw2 is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive. Fault of sensor Tw2, replace it with a new sensor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
HA	Fault of outlet water temperature sensor (Tw_out) Show causes & actions Likely causes Check the sensor resistance. The connector of sensor Tw_out is loose. Reconnect it. The connector of sensor Tw_out is wet or there is water inside. Remove the water, dry the connector. Add waterproof adhesive. Fault of sensor Tw_out, replace it with a new sensor. Reset procedure Reset the safety device by switching the unit off and back on.	Details
Hb	Protection “PP” three times and Tw_out < 7°C Show causes & actions The same applies for “PP” Reset procedure Reset the safety device by switching the unit off and back on.	Details
Hd	Communication fault between hydraulic module in parallel Show causes & actions Likely causes The signal wires of the slave units and of the master unit are not connected effectively. After having checked that all the signal wires are properly connected, and having made sure that there is no strong electricity or strong magnetic interferences, switch the unit back on. There are two or more outdoor units connected to the control panel. After having removed the extra control panel and having kept only the control panel of the master unit, switch the unit back on. The ignition interval between the master unit and the slave unit is longer than 2 minutes. After having made sure that the interval between ignition of all the master units and slave units is less than 2 minutes, switch the unit back on. The addresses of the master units and of the slave units are repeated; pressing the key SW2 on the main board of the slave units once, the address code of the slave unit will be displayed (Normally address code, one of 1,2,3 ... 15 will be displayed on the main board), check whether it is a duplicate of the address. If there is a duplicated address code, after having switched the system off, set S4-1 at ON on the main board of the master unit or on the main board of the slave unit displaying the error “Hd” (refer to Chap. 10.1.1 Setting of the function). Switch all the units back on for 5 minutes without error “Hd”, switch back off and set S4-1 at OFF. The system is reset. Reset procedure Reset the safety device by switching the unit off and back on.	Details
HE	Communication error between main board and thermostat transfer board Show causes & actions Likely causes The control board RT/Ta PCB is set to be valid on the control panel but the thermostat transfer board is not connected or communication between the thermostat transfer board and the main board is not actually connected. If the transfer board of the thermostat is not necessary, set RT/Ta PCB at not valid. If the transfer board of the thermostat is necessary, connect it to the main board and make sure that the communication wire is properly connected and that there are no strong electricity or strong magnetic interferences. Reset procedure Reset the safety device by switching the unit off and back on.	Details
HF	EEPROM fault of the inverter module board Show causes & actions Likely causes The EEprom parameter is in error, rewrite the EEprom data. The EEprom component is damaged, replace the EEprom component. The module board of the inverter is damaged, replace it with a new PCB. Reset procedure Reset the safety device by switching the unit off and back on.	Details
HH	H6 appeared 10 times in 2 hours Show causes & actions See H6. Reset procedure Reset the safety device by switching the unit off and back on.	Details
HP	Low pressure protection in cooling Pe < 0.6 occurred 3 times in one hour Show causes & actions See P0. Reset procedure Reset the safety device by switching the unit off and back on.	Details
C7	Temperature of transducer module too high Show causes & actions Likely causes The supply voltage of the unit is low, increase the supply voltage to the required range. The space between the units is too narrow for the thermal exchange. Increase the space between the units. The heat exchanger is dirty or something is blocked on the surface. Clean the heat exchanger or remove the obstruction. The fan does not work. The motor of the fan or the fan is damaged, replace it with a new fan or a new motor. The water flow rate is low, there is air in the system, or the pump head is not sufficient. Release the air and select the pump again. The outlet water temperature sensor is loose or damaged; reconnect it or replace it with a new one. Reset procedure Reset the safety device by switching the unit off and back on.	Details
F1	Low voltage protection on DC bus Show causes & actions Likely causes Check power supply. If the power supply is OK, check whether the LED light is OK, check whether PN voltage is 380V, the problem usually comes from the main board. Furthermore, if the light is OFF, disconnect power, check the IGBT, check the diodes. If voltage is not correct or the inverter board is damaged, change it. If there is no problem with IGBT, it means that there are problems on the board of the inverter. Check the rectifier jumper. (Same method as IGBT: disconnect power, check whether or not the diodes are damaged). Usually, if F1 is displayed when the compressor is started, it likely depends on the main board. If F1 appears when the fan is started, it could be due to the board of the inverter. Reset procedure Reset the safety device by switching the unit off and back on.	Details
L0	Compressor inverter module fault Show causes & actions Reset procedure Reset the safety device by switching the unit off and back on.	Details
L1	Low voltage protection on DC bus Show causes & actions Likely causes Check the pressure of the heat pump system. Check the phase resistance of the compressor. Check the connection sequence of the power line U, V, W between the inverter board and the compressor. Check the connection of the power line L1, L2, L3 between the inverter board and the filter board. Check the board of the inverter. Reset procedure Reset the safety device by switching the unit off and back on.	Details
L2	High voltage protection on DC bus Show causes & actions Likely causes Check the pressure of the heat pump system. Check the phase resistance of the compressor. Check the connection sequence of the power line U, V, W between the inverter board and the compressor. Check the connection of the power line L1, L2, L3 between the inverter board and the filter board. Check the board of the inverter. Reset procedure Reset the safety device by switching the unit off and back on.	Details
L4	MCE operation anomaly Show causes & actions Likely causes Check the pressure of the heat pump system. Check the phase resistance of the compressor. Check the connection sequence of the power line U, V, W between the inverter board and the compressor. Check the connection of the power line L1, L2, L3 between the inverter board and the filter board. Check the board of the inverter. Reset procedure Reset the safety device by switching the unit off and back on.	Details
L5	Zero speed protection Show causes & actions Likely causes Check the pressure of the heat pump system. Check the phase resistance of the compressor. Check the connection sequence of the power line U, V, W between the inverter board and the compressor. Check the connection of the power line L1, L2, L3 between the inverter board and the filter board. Check the board of the inverter. Reset procedure Reset the safety device by switching the unit off and back on.	Details
L7	Phase sequence fault (only three-phase models) Show causes & actions Likely causes Check the pressure of the heat pump system. Check the phase resistance of the compressor. Check the connection sequence of the power line U, V, W between the inverter board and the compressor. Check the connection of the power line L1, L2, L3 between the inverter board and the filter board. Check the board of the inverter. Reset procedure Reset the safety device by switching the unit off and back on.	Details
L8	Frequency variation of compressor higher than 15Hz within 1 second Show causes & actions Likely causes Check the pressure of the heat pump system. Check the phase resistance of the compressor. Check the connection sequence of the power line U, V, W between the inverter board and the compressor. Check the connection of the power line L1, L2, L3 between the inverter board and the filter board. Check the board of the inverter. Reset procedure Reset the safety device by switching the unit off and back on.	Details
L9	The actual frequency of the compressor differs from the target frequency by over 15Hz Show causes & actions Likely causes Check the pressure of the heat pump system. Check the phase resistance of the compressor. Check the connection sequence of the power line U, V, W between the inverter board and the compressor. Check the connection of the power line L1, L2, L3 between the inverter board and the filter board. Check the board of the inverter. Reset procedure Reset the safety device by switching the unit off and back on.	Details

Common MAGIS M22 problems & troubleshooting

Patterns that group across the manufacturer's fault-code table. Each entry links to the full code listing further down the page.

How to fix the MAGIS M22 water flow fault (after e8 has been displayed 3 times)

Triggered by fault code E0.

How to fix the MAGIS M22 the phase loss or the neutral cable or the live cable are connected inversely (only for three-phase unit)

Triggered by fault code E1.

How to fix the MAGIS M22 communication fault between the control panel and the hydraulic module

Triggered by fault code E2.

How to fix the MAGIS M22 fault of the final temperature sensor of the outlet water (t1)

Triggered by fault code E3.

How to fix the MAGIS M22 fault of domestic hot water storage tank temperature sensor (t5)

Triggered by fault code E4.

MAGIS M22

MAGIS M22 at a glance

MAGIS M22

MAGIS M22 at a glance

Register this Alpha MAGIS M22 on BoilerTag

MAGIS M22 data sheet

Engineer's overview

MAGIS M22 fault codes

Common MAGIS M22 problems & troubleshooting

How to fix the MAGIS M22 water flow fault (after e8 has been displayed 3 times)

How to fix the MAGIS M22 the phase loss or the neutral cable or the live cable are connected inversely (only for three-phase unit)

How to fix the MAGIS M22 communication fault between the control panel and the hydraulic module

How to fix the MAGIS M22 fault of the final temperature sensor of the outlet water (t1)

How to fix the MAGIS M22 fault of domestic hot water storage tank temperature sensor (t5)

MAGIS M22 FAQs

Every boiler brochure, free with BoilerTag

Working on a Alpha MAGIS M22?

Likely causes that trigger multiple MAGIS M22 fault codes

MAGIS M22 at a glance

MAGIS M22 at a glance

Register this Alpha MAGIS M22 on BoilerTag

MAGIS M22 data sheet

Engineer's overview

MAGIS M22 fault codes

Common MAGIS M22 problems & troubleshooting

How to fix the MAGIS M22 water flow fault (after e8 has been displayed 3 times)

How to fix the MAGIS M22 the phase loss or the neutral cable or the live cable are connected inversely (only for three-phase unit)

How to fix the MAGIS M22 communication fault between the control panel and the hydraulic module

How to fix the MAGIS M22 fault of the final temperature sensor of the outlet water (t1)

How to fix the MAGIS M22 fault of domestic hot water storage tank temperature sensor (t5)

MAGIS M22 FAQs

Does the IMMERGAS MAGIS M require a buffer tank?

What is the operating temperature range for the IMMERGAS MAGIS M?

What does fault code E8 mean on the IMMERGAS MAGIS M?

What are the minimum installation clearances for the IMMERGAS MAGIS M outdoor unit?

What are the annual service requirements for the IMMERGAS MAGIS M?

Are IMMERGAS MAGIS M heat pumps single-phase or three-phase?

Every boiler brochure, free with BoilerTag

Other Alpha heat pumps

Working on a Alpha MAGIS M22?

Likely causes that trigger multiple MAGIS M22 fault codes