TROUBLESHOOTING
you will require a digital multimeter with the functions
to measure AC/DC voltage, continuity, resistance and
It is critical that the appliance is
earthed and that the active and
neutral are not reversed.
Cannon Inbuilt Power Flue
There is a green and red LED on the ignition controller. These LEDs act as diagnostic aids when the heater safety
systems produce a safe shutdown condition.
Green LED: this is on when the flame is sensed at the flame sensor electrode.
Red LED: this flashes according to the fault code.
No LEDs means there is no power to the ignition module. Check that the heater switch is set to ON by pressing the
ON/OFF button. Check the supply voltage. Check the 1.5 Amp fuse, replace if necessary. It is critical that the appliance
is earthed and that the active and neutral are not reversed. Do not use an extension cord. This appliance is designed
to operate at 240V AC. Substantial voltage dips, or running the unit at voltages substantially lower than 240V AC may
cause nuisance shutdowns. If there is still a problem check the power supply plug from the electronic controller with a
multimeter (240V AC). If there is no power from this plug when the heater should be on, replace the electronic controller.
Remember to re-test the gas pressures any time that the electronic controller is changed. It is recommended that any
callout to a customer’s home should prompt the checking and resetting of the gas pressures.
Fault Codes
Long Short Morse Code Meaning
Action
1
5
—•••••
Normal start-up (30
second combustion
purge)
1
0
—
Normal operation
2
1
— —•
Heater has
attempted to light,
however it did not
sense flame within
the allowed time.
Check the gas supply to the unit is not switched off. Check
the gas pressures. Check the flame and spark electrode
connections and that they are positioned correctly. Ensure that
the spark is being produced at the spark electrode tip, and
is strong (clearly visible and around 6-8mm in length). Adjust
if necessary. The burner tray is earthed through contact with
the chassis. Check using a multimeter between the earth pin
(or earth tab) and the burner tray. If the unit continues to spark
after flame is present, ensure that the supply voltage polarity is
not reversed.
2
2
— —••
Flame was estab-
lished, however
the flame electrode
has sensed that the
flame has become
unstable and has
shutdown the gas.
Check that the flame sense electrode and the spark plate are
correctly positioned. Check the flame sense connections.
Check that the flue is correctly constructed. Abnormally
strong downdrafts can cause flame instability therefore it is
recommended that an appropriate flue cowl is used for windy
areas. Improper gas pressures can also cause issues. Check
the gas pressures.
1
2
—••
Room fan (circulation
fan) pressure signal
not detected.
Check the fan for dust build up and lint. Check that the
room air fan is spinning. Check that the pressure tubes are
connected correctly and not pinched or kinked. The black tube
should run from the black side of the pressure switch to the
bottom tapping on the fan venturi. The clear tube should go
from the light side of the pressure switch and to the top tapping
on the venturi. Make sure that the pressure switch wires are
connected correctly. One wire should be to C (Common) and
the other should be to NO (Normally Open). If it still doesn’t
work after checking the above, change the pressure switch.
To check the operation of the heater’s electrical system
micro-amps.
20 | Cannon Power Flue
Summary of Contents for Fitzroy FITZIB-PMEXx
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