Samsung EHS 902 fault code
Samsung EHS heat pumps
What it means
Water outlet (PHE) temperature sensor error
The water outlet (phe) sensor sensor reads open or short circuit.
Safety: Safe isolation before disconnecting sensors or working on the PCB.
UK models this code applies to
From the Samsung service literature we hold (Samsung MWR-WW10N user & service manual DB68-08470A-17 (Appendix: error codes)) — not a scraped list.
EHS Mono R290 5 kW (AE050CXYD)EHS Mono R290 8 kW (AE080CXYD)EHS Mono R290 12 kW (AE120CXYD)EHS Mono R290 16 kW (AE160CXYD)
Now the harder half: proving what caused it
902 names a symptom, not a root cause. In the app, the same code opens a guided investigation: what to measure first, the expected values for your exact model, and an honest verdict — including “nothing in this machine is broken” when that's what the readings say.
Chase this code in the app →