Troubleshooting - Mi-T-M MH-0125-3M1R Manuel De L'opérateur

SYMPTOM
Heater fires, but shuts down after
a short period of time.
Heater will not operate, or motor
runs for short time.
Fan does not operate when heater
is plugged in and Power Switch is
in the "ON" position.
Heater does not turn on and the
lamp is not lit.
Poor combustion and / or soot
production.
Heater does not fire when initially
plugged into power source or
power is interrupted.
16

TROUBLESHOOTING

PROBABLE CAUSE
1. Dirty Fuel Filter.
2. Nozzle Dirty.
3. Photocell Dirty.
4. Photocell not installed properly.
5. Photocell Defective .
6. Improper electrical connec-
tion between Circuit Board and
Photocell.
7. Cooling Fan is obstructed
1. No fuel in fuel tank.
2. Corroded Spark Plug or incor-
rect plug gap.
3. Dirty Fuel Filter.
4. Dirty Nozzle.
5. Moisture in Fuel/Fuel Tank.
6. Improper electrical connection
between Transformer and Circuit
Board.
7. Transformer Wires not con-
nected to Spark Plug.
8. Defective Transformer.
1. Broken electrical connection
between Circuit Board and motor.
2, Not enough amps available to
power heater.
1. Temperature limit sensor has
overheated.
2. No electrical power.
3. Fuse break down.
4. Improper electrical connection
between Temperature Limit Sen-
sor and Circuit Board.
1. Pump Pressure.
2. Poor fuel quality.
1. Power interrupted.
REMEDY
1. Clean/replace fuel filter.
2. Clean/replace nozzle.
3. Clean/replace Photocell.
4. Adjust Photocell position.
5. Replace Photocell.
6. Check wiring connections (See
Wiring Diagrams).
7. Check to be sure cooling fan is
not obstructed.
1. Fill tank with fresh fuel.
2. Clean/replace Spark Plug.
3. Clean/replace Fuel Filter .
4. Clean/replace Nozzle.
5. Rinse out fuel tank with clean
fresh fuel.
6. Inspect all electrical connec-
tions. (See Wiring Diagrams).
7. Re-attach Transformer wires to
Spark Plug.
8. Replace Transformer.
1. Inspect all electrical connec-
tions on Wiring Diagrams.
2. Use a new extension cord or try
another electrical socket.
1. Push Power Switch to "OFF"
and allow heater to cool for 5
minutes. Push Power Switch back
to "ON".
2. Check power cord and exten-
sion cord to insure of proper con-
nection. Test power supply.
3. Check/replace Fuse.
4. Inspect all electrical connec-
tions. (See Wiring Diagrams).
1. Be sure pump pressure is ad-
justed correctly.
2. Be sure fuel is not old or con-
taminated.
1. Switch the unit to "OFF" posi-
tion then turn unit back to "ON"
position for normal operation.
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