Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Gain access to PCB (use Insulation Mat as required)
Disconnect external controls from connector CN5 & make safe
Disconnect external controls from connector CN5 & make safe
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Cancel purge cycle & if required, reset boiler.
With external controls disconnected, is the CH symbol still displayed?
With external controls disconnected, is the CH symbol still displayed?
Isolate as per TOPs P4
and refit as necessary