Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4
CH Demand
Remove connector X40 from the PCB and make safe
WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

Does sparking occur with X40 removed from the PCB?
Note:
If sparking occurs with X40 removed from the PCB, the condensate connector MUST be refitted after this test and the fault with the condensate pump MUST be rectified as it is not acceptable to leave X40 disconnected.