LG
The LG THERMA V R32 Monobloc S is an air-source monobloc heat pump available in capacities from 5.5 kW to 16 kW, using R32 refrigerant.
The LG THERMA V R32 Monobloc S is an air-source monobloc heat pump designed for domestic heating applications in the UK. This reference guide provides technical specifications, operational details, and fault code information for heating engineers and homeowners researching this LG appliance.
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Full technical specifications extracted from the manufacturer brochure. Empty sections are hidden.
The LG THERMA V R32 Monobloc S heat pump series offers a range of heating capacities, from 5.5 kW to 16 kW, accommodating various property sizes and demands. These monobloc units utilise R32 refrigerant and are designed for straightforward installation as a single outdoor unit. The range includes models with single-phase (220-240V) and three-phase (380-415V) electrical connections, all operating at 50 Hz. The system is capable of achieving a maximum flow temperature of 50°C. Installation requires a minimum side clearance of 300mm and a front clearance of 1500mm for maintenance access. A buffer tank is a required component for system operation, and the unit is compatible with various LG control options.
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/lg/hm071mr-u44#fault-ch14 to jump straight to the entry.
| Code | Meaning | Details |
|---|---|---|
| CH14 | Blocked filters and/or air pockets Show causes & actionsFlow rate alarms are likely to occur during the first two weeks after commissioning; this is due to the formation of air-pockets which may occur and temporarily affect the flow-rate. In most cases, the air will migrate to the auto-air vents (AAV) and release without any requirement for intervention. Equally, if any sediments are in the hydronic pipework, they will be caught by the internal strainer. Blockages in the strainer can cause CH14 alarms. In this case, the strainers will need to be cleaned Likely causes
User action Recommendation: once the unit has been installed, advise the customers that it is quite likely and normal for a CH14 alarm to occur in the first two weeks. This will give the customer reassurance if and when the fault does arise! If the cause was air, then a simple power reset could allow the system to continue working as normal, once the pocket of air has made its way to the AAV Engineer action If any sediments are in the hydronic pipework, they will be caught by the internal strainer. Blockages in the strainer can cause CH14 alarms. In this case, the strainers will need to be cleaned Reset procedure If the cause was air, then a simple power reset could allow the system to continue working as normal | Details |
Patterns that group across the manufacturer's fault-code table. Each entry links to the full code listing further down the page.
User: Recommendation: once the unit has been installed, advise the customers that it is quite likely and normal for a CH14 alarm to occur in the first two weeks. This will give the customer reassurance if and when the fault does arise! If the cause was air, then a simple power reset could allow the system to continue working as normal, once the pocket of air has made its way to the AAV
Engineer: If any sediments are in the hydronic pipework, they will be caught by the internal strainer. Blockages in the strainer can cause CH14 alarms. In this case, the strainers will need to be cleaned
Triggered by fault code CH14.
Common questions from engineers and homeowners about the LG HM071MR U44.
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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 28 June 2026.