PAGE 9 OF 9
0217 IH-6513
TROUBLESHOOTING
LOCATING YOUR SERIAL NUMBER
Your serial number can be found on a white label on the right side cover of your heater. It will begin with 2 digits, the
letter "H" followed by 6 digits. For Example: 13H123456. Have your serial number ready before calling Uline Customer
Service.
OPERATING ISSUE
CAUSE
RECOMMENDATIONS
Heater ignites, but main PCB
shuts off after a short period
of time. Lamp flickers and
LED display shows "E1".
Incorrect pump pressure.
Dirty input, output or lint filter.
Dirty fuel filter.
Nozzle is dirty.
Photocell lens is dirty.
Photocell not installed properly.
Photocell is defective.
Improper electrical connection between
main PCB and photocell.
Adjust pump pressure.
Clean or replace air or lint filter.
Clean or replace fuel filter.
Clean or replace nozzle.
Clean or replace photocell.
Adjust photocell position.
Replace photocell.
Check wiring connections. (See wiring diagram on page 8)
Heater will not operate
or motor runs for a short
time. Lamp flickers and LED
display shows "E1".
No kerosene in the fuel tank.
Incorrect pump pressure.
Corroded spark plug or incorrect plug gap.
Dirty fuel filter.
Dirty nozzle.
Moisture in fuel tank.
Improper electrical connection between
transformer and circuit board.
Ignitor wire not connected to spark plug.
Defective ignitor.
Fill tank with fresh kerosene.
Adjust pump pressure.
Clean or replace spark plug. Adjust plug gap as necessary.
Clean or replace fuel filter.
Clean or replace nozzle.
Rinse fuel tank with clean, fresh kerosene.
Inspect all electrical connections. (See wiring diagram on page 8)
Re-attach ignitor wire to spark plug.
Replace ignitor.
Fan does not operate
when heater is plugged in
and power switch is in the
on position. The lamp is
flickering and/or LED display
shows "E1" or "E2".
Thermostat is set too low.
Broken electrical connection between main
PCB and motor.
Rotate thermostat to a higher setting.
Inspect all electrical connections.
(See wiring diagram on page 8)
Lamp is flickering and LED
display shows "E3".
Thermostat switch has failed.
Replace thermostat switch. (See wiring diagram on page 8)
Poor combustion and / or
excess soot production.
Dirty input, output or lint filter.
Dirty fuel filter.
Poor quality of fuel.
PSI is too high or too low.
Clean or replace air or lint filter.
Clean or replace fuel filter.
Flush fuel tank and refuel heater.
Use proper pressure.
Heater does not turn on and
the lamp is not lit.
Temperature limit sensor has overheated.
No electrical power.
Fuse is blown.
Improper electrical connection between
temperature limit sensor and circuit board.
Push power switch to off and allow heater to cool for 10
minutes. Restart heater.
Check power cords for proper connection and test the power
supply.
Check and replace the fuse.
Inspect all electrical connections.
(See wiring diagram on page 8)
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CHICAGO • ATLANTA • DALLAS • LOS ANGELES • MINNEAPOLIS • NYC/PHILA • SEATTLE • MEXICO • CANADA
1-800-295-5510
uline.com
