Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Drain the domestic hot water circuit
Remove flow sensor assembly from the boiler
WARNING!
There may be residual water even when DHW inlet is turned off and water drained, take precautions to prevent water damage to the electrics when flow sensor is removed.
Remove flow sensor assembly from the boiler
WARNING!
There may be residual water even when DHW inlet is turned off and water drained, take precautions to prevent water damage to the electrics when flow sensor is removed.
Observation:
Remove item 2 from assembly, ensure impeller is free to rotate & unrestricted.
Isolate as per TOPs P4
and refit as necessary