Samsung heat pump (EHS) error codes
What each code means, from Samsung EHS's own service literature, and which UK models it applies to.
Samsung EHS heat pumps
E911Low water flow rate21 modelsE912Normal flow detected while the pump is OFF21 models554Gas leak error14 models536PHE refrigerant leak error25 models507Compressor stopped by high-pressure switch25 models901Water inlet (PHE) temperature sensor error14 models902Water outlet (PHE) temperature sensor error14 models903Water outlet (backup heater) temperature sensor error14 models904DHW tank temperature sensor error14 models122EVA inlet temp sensor short/open14 models123EVA outlet temp sensor short/open14 models101Hydro unit ↔ outdoor unit communication error14 models601Wired remote controller ↔ indoor unit communication error14 models907Pipe rupture protection25 models
Knowing the code is the easy half
A code names a symptom, not a root cause. The app takes the same code and walks the fix: what to measure first, the expected values for your exact model, and a verdict that tells you when the machine isn't actually broken.
Chase a Samsung EHS code on your machine →Free, no sign-up. Pick the model, put the code in, and it takes you through the chart where we hold one.
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