Set Appliance State:
CH Demand
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Allow the boiler to run on central heating mode for a few minutes.
Switch off the central heating demand and monitor the pump and fan.
The fan should over run for approximately 20 seconds, whilst the pump should overrun in accordance with the setting on the main PCB contact (see table below).
Do the fan and pump over run as expected?
Switch off the central heating demand and monitor the pump and fan.
The fan should over run for approximately 20 seconds, whilst the pump should overrun in accordance with the setting on the main PCB contact (see table below).
| Contact Position | Pump over run behaviour |
| Contact 1 | Approximately 20 seconds |
| Contact 2 | Approximately 20 seconds |
| Contact 3 | Pump runs continuously |
| Contact S | Approximately 5 minutes |
Do the fan and pump over run as expected?
