Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
DHW Demand
DHW Selector in Maximum (+) position
CH Selector in Minimum (-) position
ON/OFF Switch in ON position
DHW Selector in Maximum (+) position
CH Selector in Minimum (-) position
ON/OFF Switch in ON position
Remove the black sheathed, grey spark ignition lead from near the top of the ignition PCB
| WARNING! Mains voltage is expected during test, follow TOPs P4 live testing procedure |
Measurement:
Allow the appliance to commence its ignition sequence.
Does sparking occur across the ignition PCB at the spark connections?
Refit the Spark lead to the PCB connection.
| WARNING! - STAY CLEAR OF THE IGNITION UNIT DURING THIS TEST |
Does sparking occur across the ignition PCB at the spark connections?
Refit the Spark lead to the PCB connection.
Isolate as per TOPs P4
and refit as necessary