Isolate Mains Power to appliance as per TOPs P4
CH isolating valves Off
Boiler discharged and drained
CH isolating valves Off
Boiler discharged and drained
Observation:
Remove CH filter and check for blockage.
Note:
Filter is located in the return connection of the appliance:
Note:
Filter is located in the return connection of the appliance:
Isolate as per TOPs P4
and refit as necessary