JCB-SH140D
Instruction & User Manual
30
Problem
Possible Cause
Solution
Heater fires, but main PCB
shuts heater off after a short
period of time, flame is
flickering, and LED display
show “E1” (1 flash).
1. Incorrect pump pressure.
2. Dirty input output or lint filter.
3. Dirty fuel filter.
4. Nozzle is dirty.
5. Photocell lens is dirty.
6. Photocell not installed properly.
7. Photocell defective.
8.Improper electrical connection between
main PCB and photocell.
1. Adjust pump pressure.
2. Clean/replace air filter.
3. Clean/replace fuel filter.
4. Clean/replace nozzle.
5. Clean/replace photocell.
6. Adjust photocell position.
7. Replace photocell.
8. Check wiring connections.
Heater will not operate,
1. No diesel in fuel tank.
1.
Fill tank with fresh diesel.
or motor runs for short
2. Incorrect pump pressure.
2.
Adjust pump pressure.
time, lamp flickers and
3. Corroded spark plug or incorrect plug
3.
Clean/replace spark plug.
LED display shows
gap.
4.
Clean/replace fuel filter.
“E1” (1 flash).
4. Dirty fuel filter.
5. Dirty nozzle.
5.
Clean/replace nozzle.
6.
Rinse out fuel tank with clean fresh
6. Moisture in fuel/fuel tank.
diesel.
7. Improper electrical connection between
7.
Inspect all electrical connection (see
transformer and circuit board.
wiring diagrams).
8. Igniter wire not connected to spark plug.
8.
Re-attach igniter wire to spark plug.
9. Detective igniter.
9.
Replace igniter.
Fan does not operate when
heater is plugged in and
power switch is in the “ON”
position. The lamp is
flickering or on and LED
display shows “E1” or “E2” (1
flash or 2 flashes).
1.
Thermostat is set too low.
2.
Broken electrical connection between
main PCB and motor.
1. Rotate thermostat to a higher setting.
2.Inspect all electrical connection (see
wiring diagrams).
Lamp is flickering, and LED
display shows “E3” (3
flashes).
1. Thermostat switch has failed.
1.Replace thermostat switch, wiring
diagrams.
Poor combustion and / or
1. Dirty input output or lint filter.
1. Clean/replace air filter.
excess soot production.
2. Dirty fuel filter.
2. Clean/replace fuel filter.
3. Poor quality of fuel.
3. Be sure fuel is not contaminated or old.
4. Pump pressure is too high or too low.
4. Use proper pressure.
Heater does not turn on
1. Temperature limit sensor has
1. Push power switch to “OFF” and allow
and the lamp is not lit.
overheated.
heater to cool for 10 minutes. Push switch
2. No electrical power.
back to “ON”.
3. Fuse blown.
2. Check power cord and extension cord
4. Improper electrical connection between
to insure of proper connection, test power
temperature limit sensor and circuit board.
supply.
3. Check/replace fuse.
4. Inspect all electrical connection (see
wiring diagram).
Troubleshooting
