Isolate Mains Power to appliance as per TOPs P4
Note
This test is relevant only if the appliance is connected to a sealed heating system. Enter system pressure satisfactory if appliance is connected to an open vented system and read diagnostic text.
Note
This test is relevant only if the appliance is connected to a sealed heating system. Enter system pressure satisfactory if appliance is connected to an open vented system and read diagnostic text.
Observation:
Check for correct system pressure on system pressure gauge.
This is nominally 0.7-1.0 bar however system may require different pressures and this should be investigated as necessary i.e. BS 5449.
This is nominally 0.7-1.0 bar however system may require different pressures and this should be investigated as necessary i.e. BS 5449.
Isolate as per TOPs P4
and refit as necessary