12VDC BURNER TROUBLE SHOOTING FLOW CHART
15
IS THERE DIESEL FUEL
IN THE TANK?
IS THE BREAKER ON
THE CONTROL PANEL
TRIPPED OR IS THE
INLINE FUSE BLOWN?
IS THE SPRAY
TIP INSTALLED?
IS THE BURNER SWITCH
TURNED ON & THE
THERMOSTAT TURNED
UP?
IS THE TRIGGER
BEING PULLED?
IS THE FUEL
PRESSURE 140PSI (+-
10PSI)?
DOES THE BURNER
MOTOR TURN?
ADD
FUEL
INSTALL SPRAY TIP. BURNER REQUIRES
1000PSI TO OPPERATE. IF THE UNIT IS
EQUIPED W/DUAL LANCE WAND CLOSE THE
VALVE TO INCREASE PRESSURE. VERIFY
PROPER NOZZLE SIZE.
TRIGGER MUST BE PULLED TO
OPPERATE PRESSURE/FLOW SWITCH.
TURN SWITCH ON & TURN THERMOSTAT
UP
RESET THE BREAKER AND/OR REPLACE THE FUSE-LOOK FOR SHORT. CHECK ENGINE OUTPUT-
MUST BE 12VDC OR HIGHER & LOAD TEST THE BATTERY. CHECK ENGINE RPM: 3200 FOR BELT
DRIVE, 3400RPM FOR DIRECT DRIVE. REPAIR CHARGING CIRCUIT AND/OR REPLACE BATTERY
IF NEEDED. LOW VOLTAGE WILL EFFECT BURNER PERFORMANCE.
CHECK FOR 12VDC AT THE SMALL TERMINALS ON THE BURNER RELAY WHEN THE TRIGGER IS
PULLED AND THE BURNER SWITCH IS ON AND THE THERMOSTAT IS TURNED UP. DO YOU GET
VOLTAGE?
ADJUST FUEL PRESSURE TO SPEC. CHECK/REPLACE FILTER & REPAIR ANY AIR LEAKS. IF
PROPER PRESSURE CANNOT BE OBTAINED, REPLACE FUEL PUMP.
IS THERE FUEL
VAPOR COMING OUT
OF THE BURNER
EXHAUST?
CHECK THE TRANSFORMER FOR SPARK
!!!CAUTION HIGH VOLTAGE!!!
CHECK ELECTRODE
ADJUSTMENT AND AIR BAND ADJUSTMANT (SEE BURNER SPEC SHEET FOR SETTING-
ELECTRODE GAP IS VERY IMPORTANT). CHECK ELECTRODES FOR CRACKS. REPLACE FUEL
NOZZLE. REPLACE INSULATION IF IT IS SATURATED WITH DIESEL FUEL
TROUBLESHOOTING ENDS: REPEAT PROCEEDURE UNTIL TROUBLEFREE OPERATION IS
OBTAINED
No
No
No
No
Yes
No
Yes
No
Yes
Yes
Yes
Yes
JUMP THE TWO BIG RELAY
TERMINALS TOGETHER (CAUTION-
ONLY FOR 1-2 SECONDS). IF THE
BURNER MOTOR STARTS, REPLACE
THE RELAY- IF NOT REPLACE THE
BURNER MOTOR.
CHECK HEAT SWITCH/THERMOSTAT FOR
CONTINUITY(THERMOSTAT MUST BE ADJUSTED TO HIGHEST
SETTING BEFORE TESTING-REPLACE IF NO CONTINUITY). CHECK
PRESSURE SWITCH FOR CONTINUITY WHEN MACHINE IS
RUNNING AND WITH TRIGGER PULLED-REPLACE IF NO
CONTINUITY.
No
No
Yes
No
Yes
Yes
BURNER DOES
"NOT" COME ON
BURNER DOES
"NOT"TURN
OFF
!!CAUTION!! TURN UNIT
OFF IMMEDIATELY AND
REPAIR
DISCONNECT THE WIRE(S) FROM
ONE OF THE SMALL TERMINALS
OF THE BURNER RELAY. DOES
THE BURNER CONTINUE TO FIRE?
REPLACE
BURNER RELAY
REPLACE THE
PRESSURE/
FLOW SWITCH
Yes
CHECK OUT THE UNIT: REPLACE
ANY DAMAGED HOSES, O-RINGS
AND/OR TRIGGER GUN.
No
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