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Samsung Gen 6 fault E911

Emergency stop

Heat pump

What it means

Emergency stop related to flow sensor, flow rate, air in system, pump, zone valves, and directional installation of flow sensor/pump/flow meter.

Likely causes

  1. Flow sensor not fitted or not connected to Samsung PCB
  2. Flow rate below 16 litres per minute
  3. Air trapped in system
  4. Incorrect circulation pump speed setting
  5. Zone valves sticking closed
  6. Incorrect direction of flow sensor on pipework
  7. Incorrect direction of pump on pipework
  8. Incorrect direction of Flow Meter on pipework

Where to start

  1. Ensure flow sensor is fitted onto pipework and connected to Samsung PCB.
  2. Ensure flow rate is above 16 litres per minute.
  3. Ensure all air is removed from system.

The full answer, free

  • 11 more checks in order
  • The readings and component tests from the manual
  • How to put it right, step by step
  • The manual page for this fault (page 55), right under the answer
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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 Gen 6. Check the model on the data plate before you order parts.

Other Samsung Gen 6 fault codes