Set Appliance State:
Mode selector switch to Off/Reset position
CH Demand
Isolate Mains Power to appliance as per TOPs P4
Central heating temperature control set to maximum
Remove diverter valve head
Central heating temperature control set to maximum
Remove diverter valve head
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Mode selector switch to CH position.
Observe the diverter valve head spindle.
With mode selector switch in CH position spindle should be retracted.
Turn hot water tap ON.
Spindle should now extend.
Observe the diverter valve head spindle.
With mode selector switch in CH position spindle should be retracted.
Turn hot water tap ON.
Spindle should now extend.
Isolate as per TOPs P4
and refit as necessary