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5.2 Troubleshooting
Other faults or problems with the appliance that may not trigger an alarm are listed in “Table 15 – Troubleshooting guide” below
Symptom
Possible Cause(s)
Suggested Action(s)
Action By
User
Engineer
No heat supplied to property.
Time clock switched off, or room
thermostat set too low.
Check timeclock to determine if the heating
should be on, and room thermostat is turned up
high enough.
Timeclock and controls are switched on, and
appliance is in standby.
Heat demand for the property has been
satisfied
If the property temperature is too low, increase
the flow temperature in the user menu
‘Temperature’.
The appliance has
been
working in
powerbands for some time, but the property
heat demand has still not been satisfied.
Flow temperature set too low in user menu
‘Temperature’.
Airlocks in heating system.
Auger mode incorrect.
Anti-condensation valve fault.
Anti condensation valve actuator set to
CCW rotation.
Circulating pump fault.
Increase flow temperature in user menu
‘Temperature’.
Bleed heating system to remove airlocks.
Perform preset drop test, check auger mode.
Ensure valve is operating correctly.
Ensure actuator is set to CW rotation.
Ensure pump is operating correctly.
Appliance is cycling on and off very
frequently.
Poor quality room thermostats, or location
close to draughts from opening doors etc.
Trigger temperature is too low.
Consider upgrading controls and utilise
alternative locations.
Increase trigger temperature parameter
Combustion door will not open, green light is
not on.
Flue gas temperature above 50°C.
Wait for flue gas temperature to drop below
50’C, this can be checked on page 1 of the
Settings > Information menu.
Combustion door will not open when I press
the green button, the green light is on, I
cannot hear the interlock ‘click’.
Door interlock not disengaging.
When pushing the green button, push the door
handle down, then up to open the door.
