Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to AC Volts 
Turn Hot Water Tap On
Gain access to PCB (use Insulation Mat as required)
Pull connector X1 back slightly to expose test points
Reconnect ignition and condensate leads to PCB
(as these have been removed for access)
Pull connector X1 back slightly to expose test points
Reconnect ignition and condensate leads to PCB
(as these have been removed for access)
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Measure the AC voltage between pins 3 and 4 on X1 at the PCB.
Mains voltage should be present.
Mains voltage should be present.
Isolate as per TOPs P4
and refit as necessary