Set Appliance State:
CH Demand
Gas On
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Observation:
Allow the fan to run, boiler to ignite and establish.
Remove CH demand.
Does the pump overrun for approximately 5 minutes?
Note:
The pump being correctly wired into the boiler is essential to correct diagnosis for this test.
Remove CH demand.
Does the pump overrun for approximately 5 minutes?
Note:
The pump being correctly wired into the boiler is essential to correct diagnosis for this test.
Isolate as per TOPs P4
and refit as necessary