Set Appliance State:
Gas Off
| Isolate Mains Power to appliance as per TOPs P4 |
Turn Hot Water Tap On
Boiler ON/OFF Switch OFF
CH Temperature Selector OFF
DHW Temperature Selector to Max
Remove vent plug if necessary
CH Temperature Selector OFF
DHW Temperature Selector to Max
Remove vent plug if necessary
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Observation:
Boiler ON/OFF Switch ON.
Does DHW Pump run?
Note: If vent Plug is removed from pump to observe shaft turning, care must be taken that water does not get on to the electrical components of the boiler.
Does DHW Pump run?
Note: If vent Plug is removed from pump to observe shaft turning, care must be taken that water does not get on to the electrical components of the boiler.
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Isolate as per TOPs P4
and refit as necessary