Set Appliance State:
Gas Off
| 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)
NOT CURRENTLY USED
NOT CURRENTLY USED
NOT CURRENTLY USED
NOT CURRENTLY USED
NOT CURRENTLY USED
NOT CURRENTLY USED
NOT CURRENTLY USED
NOT CURRENTLY USED
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Reset appliance to ensure it is not in lockout.
Allow boiler to complete its self check and ignition sequence to begin.
Approximately 3 seconds after the fan begins to run
measure the voltage across the red wire on X3 marked 10.1
and the blue wire on X4 marked 10.2
Mains voltage expected.
Note:
Voltage will only be present during the
sparking stage of the ignition sequence.
Mains voltage present
Mains voltage absent
Allow boiler to complete its self check and ignition sequence to begin.
Approximately 3 seconds after the fan begins to run
measure the voltage across the red wire on X3 marked 10.1
and the blue wire on X4 marked 10.2
Mains voltage expected.
Note:
Voltage will only be present during the
sparking stage of the ignition sequence.
Mains voltage present
Mains voltage absent
