Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Remove the outdoor temperature sensor connector (dark blue)
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Does the boiler now respond to a CH demand?
Note:
1. Fault code may be displayed but this does not affect the test.
2. Boiler will take approximately 45 seconds after power on before responding to the CH demand.
Note:
1. Fault code may be displayed but this does not affect the test.
2. Boiler will take approximately 45 seconds after power on before responding to the CH demand.
Isolate as per TOPs P4
and refit as necessary