Set Appliance State:
Mains Power Off
CH temperature control to max
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
Allow boiler to fire under heating demand.
Remove heating demand via room thermostat or clock.
Does the pump continue to run for approximately 3 minutes?
Remove heating demand via room thermostat or clock.
Does the pump continue to run for approximately 3 minutes?
Isolate as per TOPs P4
and refit as necessary