Set Appliance State:
Mains Power Off
Mode selector switch to Off/Reset position
CH Demand
Central heating temperature control set to maximum
Remove diverter valve head
Remove diverter valve head
Gas On
| 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.
Refit diverter valve head after test.
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.
Refit diverter valve head after test.
Isolate as per TOPs P4
and refit as necessary