DISCONNECT DHW FLOW SWITCH

Set Appliance State:

Isolate Mains Power to appliance as per TOPs P4

Disconnect 1x connector to the DHW flow switch & make safe
Ensure No demands

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

Mains Power On

Observation:

Does the boiler still attempt to fire after self-check & purge cycle has completed? (see note)

Note.
1. The boiler will carry out a self-check & purge cycle (approx. 2 mins,15 seconds duration) every time the power is reinstated, any applied demands will not commence until self-check has completed, for information on how to cancel the purge cycle click HERE.
2. Reconnect electrical connector to flow switch, after test complete.