Ideal
The Ideal Logic Air Monobloc heat pump, introduced in 2025, offers a SCOP of 4.96 at 35°C and operates down to -20°C ambient temperatures.
The Ideal LOGIC AIR MONOBLOC HEAT PUMP SYSTEM is an air source monobloc heat pump, introduced in 2025. This reference document provides UK gas and heating engineers with comprehensive technical specifications, operational parameters, and fault code diagnostics. It covers the Logic Air 4kW, 5kW, 8kW, and 10kW variants, detailing their refrigerant, capacity, efficiency, and installation requirements. This resource supports both initial research and ongoing maintenance.
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Full technical specifications extracted from the manufacturer brochure. Empty sections are hidden.
The Ideal LOGIC AIR MONOBLOC HEAT PUMP SYSTEM is an inverter-driven air source monobloc heat pump, designed for UK domestic heating and hot water applications. Introduced in 2025, the Logic Air range includes 4kW, 5kW, 8kW, and 10kW variants, all utilising R32 refrigerant, which has a Global Warming Potential (GWP) of 675 and is classified as A2L.
The system is engineered for efficiency, with a Coefficient of Performance (COP) of 5.34 at A7W35 (7°C ambient, 35°C flow temperature) and a Seasonal Coefficient of Performance (SCOP) of 4.96 at 35°C. For higher temperature systems, the SCOP at 55°C is 3.48, with a maximum flow temperature of 60°C. Operation is maintained down to an outdoor ambient temperature of -20°C.
Physical dimensions for the 4kW and 5kW outdoor units are 980mm height, 1175mm width, and 600mm depth, with an unpackaged weight of 86kg. The 8kW and 10kW units are larger, measuring 1190mm in height and weighing 110kg. Sound emissions are managed, with the 4kW and 5kW models producing a sound power level of 52 dB(A) and a sound pressure level of 44 dB(A) at 1 metre. A quiet mode is available.
Electrically, the system operates on a 230V, 50Hz single-phase supply, requiring a 16A MCB for the 4kW and 5kW models, and a 25A MCB for the 8kW and 10kW models. The 4kW model has a maximum power consumption of 1.84 kW. Hydronic requirements include a minimum water flow rate of 8.5 litres per minute for the smaller units and 14.5 litres per minute for the larger units, with a minimum pipe size of 22mm or 28mm respectively. A buffer tank and volumiser are both specified as required components for installation.
Control options include Ideal's Halo Air Wi-Fi/RF or compatible 3rd party PRT systems, with integrated weather compensation functionality. Standard warranty coverage is 1 year, with registration required. Annual servicing is recommended every 12 months, encompassing detailed checks of the monobloc unit, controller, and domestic hot water cylinder. F-Gas certification is required for engineers handling this appliance.
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/ideal/8kw-logic-air#fault-10 to jump straight to the entry.
| Code | Meaning | Details |
|---|---|---|
| 10 | Outside Sensor Fault | — |
| 26 | Header Thermistor Fault | — |
| 33 | Flow Thermistor (Indoor) Fault | — |
| 44 | Return Thermistor Fault | — |
| 50 | DHW Thermistor Fault | — |
| 60 | Room Stat 1 Fault | — |
| 65 | Room Stat 2 Fault | — |
| 81 | LPB short-circuit/comm Fault | — |
| 82 | LPB address collision Fault | — |
| 83 | BSB short circuit Fault | — |
| 84 | BSB address collision | — |
| 100 | 2 clock time masters Fault | — |
| 102 | Clock without backup Fault | — |
| 105 | Service Required | — |
| 106 | Source temp too low | — |
| 126 | 7093 DHW Setpt Fault | — |
| 127 | Anti-Legionella Temp’ Fault | — |
| 134 | Re-occurring Heat Pump Fault | — |
| 146 | Configuration error | — |
| 171 | Alarm contact 1 active Fault | — |
| 366 | Room temp sensor Fault | — |
| 369 | External Fault | — |
| 385 | Low Mains Voltage Fault | — |
| 489 | No Cascade Master Fault | — |
| 490 | No outdoor connection Fault | — |
| 499 | No outdoor connection Fault | — |
| 506 | Boiler no temp’ rise Fault | — |
| 516 | No outdoor connection Fault | — |
| 7 | No heat pump starts exceeded | — |
| No Hot Water | No Hot Water | — |
| No Central Heating | No Central Heating | — |
| No Display | No Display | — |
| 370 | Heat Pump fault:- F0 No outdoor connection fault Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 1 | Details |
| 370 | Heat Pump fault:- F1 No outdoor connection fault Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 2 | Details |
| 370 | Heat Pump fault:- F2 Outdoor HX thermistor fault Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 15 | Details |
| 370 | Heat Pump fault:- F3 Heat pump inverter fault Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 6 | Details |
| 370 | Heat Pump fault:- F4 Outdoor electrical filtering fault Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 7 | Details |
| 370 | Heat Pump fault:- F5 Outdoor discharge thermistor Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 7 | Details |
| 370 | Heat Pump fault:- F6 Compressor thermistor fault Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 8 | Details |
| 370 | Heat Pump fault:- F7 Outdoor intermediate HX thermistor Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 9 | Details |
| 370 | Heat Pump fault:- F8 Outdoor outlet HX thermistor Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 13 | Details |
| 370 | Heat Pump fault:- F9 Heat Pump defrost thermistor fault Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 12 | Details |
| 370 | Heat Pump fault:- F10 Outdoor heatsink thmr fault Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 11 | Details |
| 370 | Heat Pump fault:- F11 outdoor PFC thermistor fault Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 25 | Details |
| 370 | Heat Pump fault:- F12 Outdoor exp valve thmr Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 12 | Details |
| 370 | Heat Pump fault:- F13 Outdoor electrical error Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 16 | Details |
| 370 | Heat Pump fault:- F14 outdoor pressure sensor fault Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 15-2 | Details |
| 370 | Heat Pump fault:- F15 Current Trip Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 16 | Details |
| 370 | Heat Pump fault:- F16 Heat pump compressor fault Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 17 | Details |
| 370 | Heat Pump fault:- F17 Heat pump fan fault Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 18 | Details |
| 370 | Heat Pump fault:- F18 Outdoor discharge temp’ Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 20 | Details |
| 370 | Heat Pump fault:- F19 Compressor temperature fault Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 21 | Details |
| 370 | Heat Pump fault:- F20 Outdoor low pressure Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 22 | Details |
| 370 | Heat Pump fault:- F21 Outdoor power supply fault Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 25 | Details |
| 370 | Heat Pump fault:- F22 No outdoor connection Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 1 & 2 | Details |
| 370 | Heat Pump fault:- F23 Hydraulic HX temperature Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 15 | Details |
| 370 | Heat Pump fault:- F24 Primary Circulation Pump Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 19 | Details |
| 370 | Heat Pump fault:- F25 Evaporator Outlet Thermistor Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 15 | Details |
| 370 | Heat Pump fault:- F26 Outdoor Power Supply Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 26 | Details |
| 370 | Heat Pump fault:- F27 No water flow fault Show causes & actionsEngineer action Scan QR code and go to section: Troubleshooting 24 | Details |
Patterns that group across the manufacturer's fault-code table. Each entry links to the full code listing further down the page.
Triggered by fault code 10.
Triggered by fault code 26.
Triggered by fault code 33.
Triggered by fault code 44.
Triggered by fault code 50.
Common questions from engineers and homeowners about the Ideal 8kW Logic Air.
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Specifications on this page are extracted from the manufacturer brochure. Always cross-check against the latest datasheet before commissioning or quoting. Last updated 30 April 2026.