17
Parts & Service: 020 8988 7400 / E-mail: [email protected] or [email protected]
FAULT FINDING
Problem
Cause
Solution
Heater fires but shuts off
after a short period of
time.
1. Dirty fuel filter
2. Nozzle is dirty
3. Photocell lens is dirty
4. Photocell not installed
properly.
5. Photocell defective
6. Bad connection
between PCB and
photocell
1. Clean/replace fuel filter
2. Clean/replace nozzle
3. Clean photocell
4. Adjust photocell position
5. Return to dealer for new
photocell
6. Ask dealer to check
wiring connections
Heater will not operate
1. No fuel in tank
2. Corroded spark plug or
incorrect plug gap
3. Dirty fuel filter
4. Dirty nozzle
5. Moisture in fuel/tank
6. Bad electrical
connection between
transformer and PCB
7. Igniter wire not
connected to sparkplug
8. Defective igniter
1. Fill tank with fresh fuel.
2. Ask dealer to clean/re-
gap/replace spark plug
3. Clean/replace fuel filter
4. Ask dealer to clean/
replace nozzle.
5. Rinse out fuel tank with
clean, fresh fuel.
6. Return to dealer.
7. Return to dealer for repair.
8. Return to dealer for repair.
Fan does not operate
when heater is switched
on.
1. Thermostat is set too low
2. Broken electrical
connection between
main PCB and motor.
1. Turn the thermostat to a
higher setting
2. Ask dealer to check all
electrical connections.
Poor combustion and/or
excessive soot produc-
tion.
1. Dirty fuel filter
2. Poor quality fuel.
1. Clean/replace fuel filter
2. Check that fuel is not
contaminated or old.
Heater does not turn on
and the lamp does not
light.
1. Temperature limit sensor
has overheated.
2. No electrical power
3. Fuse blown
4. Bad connection
between temperature
limit sensor and PCB.
1. Set the power switch to
off and allow the heater
to cool for 10mins before
switching back on.
2. Check the power cable
for good connection.
Test the power supply.
3. Return to dealer for repair.
4. Return to dealer for repair.
Summary of Contents for DEVIL IRD40B
Page 20: ......