Isolate Mains Power to appliance as per TOPs P4
Observation:
Check that all sensors are fitted correctly and are tight to the areas they are meant to monitor
There are three sensors that should be checked
Control thermistor Flow pipe (red leads) L/H side of boiler
Overheat stat (orange leads) L/H side of boiler
Return thermistor (Pink leads) R/H side of boiler
There are three sensors that should be checked
Control thermistor Flow pipe (red leads) L/H side of boiler
Overheat stat (orange leads) L/H side of boiler
Return thermistor (Pink leads) R/H side of boiler
