Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Disconnect the internal programmer to the right of the display board
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Does the boiler now recognise the demand?
Note:
If there is no internal programmer fitted this test should be skipped.
(select boiler does not recognise demand or no integral programmer)
Note:
If there is no internal programmer fitted this test should be skipped.
(select boiler does not recognise demand or no integral programmer)
Isolate as per TOPs P4
and refit as necessary