Isolate Mains Power to appliance as per TOPs P4
Mains water supply Off
Drain DHW pipework
Mains water supply Off
Drain DHW pipework
Observation:
Remove and inspect DHW filter.
Ensure filter is clear of blockages and undamaged.
Ensure filter is clear of blockages and undamaged.
Isolate as per TOPs P4
and refit as necessary