Set Appliance State:
CH Demand
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Allow the boiler to run for CH until the flow temp reaches 60°C.
Remove CH demand.
Does the pump overrun after demand has ended for approximately 30 seconds? (default setting, see note)
Note:
1. To reduce the heating time some radiators can be turned off.
2. Pump overrun time can be altered in parameter 32, if overrun time is incorrect, e.g. time period too short, this can be altered, click here for guidance.
Remove CH demand.
Does the pump overrun after demand has ended for approximately 30 seconds? (default setting, see note)
Note:
1. To reduce the heating time some radiators can be turned off.
2. Pump overrun time can be altered in parameter 32, if overrun time is incorrect, e.g. time period too short, this can be altered, click here for guidance.
Isolate as per TOPs P4
and refit as necessary