page no. 49 of 68
CPx Range Users, Installation & Servicing Instructions Doc Ref M201 issue 2.9 Nov 2018.
FAULTS
POSSIBLE CAUSES
SOLUTION
The burner will
not start when
the adjustment
thermostat closes.
Lack of electrical supply.
Check presence of voltage in the L1 - N clamps of the 7 pin plug.
Check the conditions of the fuses.
Check that thermostat limit is not
lock out.
The photoresistance sees false light.
Eliminate the light.
Heater and start thermostats are faulty.
Replace them.
The connections in the control box are
wrongly inserted.
Check and connect completely all the plugs.
Burner runs
normally in the
prepurge and
ignition cycle and
locks out after 5
seconds ca.
The photoresistance is dirty.
Clear it.
The photoresistance is defective.
Change it.
Flame moves away or fails.
Check pressure and output of the fuel.
Check air output.
Change nozzle.
Check the coil of solenoid valve 1st stage.
Burner starts with
an ignition delay.
The ignition electrodes are wrongly
positioned.
Adjust them according to the instructions of this manual.
Air output is too high.
Set the air output according to the instructions of this manual.
Nozzle dirty or worn.
Replace it.
Lock-out due to ignition failure
If the flame does not light within the safety limit (~ 5s) the
burner locks-out.
Lock-out is shown by a led on the appliance.
MAXIMUM Total number of recycle trials is 3.
To carry out the control box reset, proceed as follows:
Press the reset button for at least 1 second.
In the event of the burner not restarting it is necessary to
check if the limit thermostat (TL) is closed.
