Samsung Heat pump fault E913
Flow switch error detected six times (re-operation impossible)
Heat pumpWhat it means
Flow switch error has been detected six times consecutively, system lockout activated
Likely causes
- Persistent flow switch malfunction
- Chronic water flow problem
- Water pump failure
Where to start
- Check water pump operation and power supply
- Test flow switch functionality
- Check for air locks in system
The full answer, free
- How to put it right, step by step
- The manual page for this fault (page 85), right under the answer
Safety: Isolate the outdoor unit and any backup heater, and give the inverter capacitors time to discharge before you open the electrics. Anything on the refrigerant circuit needs F-gas certification.
From the Samsung manual for the Heat pump. Check the model on the data plate before you order parts.