VOLTAGE FLOW SWITCH AT PCB (NO DEMAND)

Isolate Mains Power to appliance as per TOPs P4

Set Multimeter to DC Volts

Gain access to PCB (use Insulation Mat as required)
Ensure No DHW demand

WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure

Mains Power On

Measure the voltage between pin 5 (white) of X2 connector at the PCB to a suitable earth point.
Expected voltage approx. 5V DC.

Notes:
1. Ensure good connections are made.
2. Remember if a white PCB is fitted X2 is in a different position.