Set Appliance State:
Isolate Mains Power to appliance as per TOPs P4
Drain Boiler of System Pressure.
Drain Boiler of System Pressure.
Measurement:
Remove and inspect the Low Water Pressure Switch.
Check for blockages in Switch and Pipe.
If possible clean any blockages to allow switch to respond to water pressure.
When cleaned, refit and refill system and test operation.
Check for blockages in Switch and Pipe.
If possible clean any blockages to allow switch to respond to water pressure.
When cleaned, refit and refill system and test operation.
Isolate as per TOPs P4
and refit as necessary