The MY16 heater is equipped with a self diagnostic fault finding system to aid repair should a fault occur. NOTE: Should any
part fail or if there is a loose connection then the control box will not allow the heater to start at all and a fault code should flash
in the control box window. The following table should assist you in repairing the heater if you follow the instructions step by
step. This list has been compiled from experience of the MY16 on the UK market. If you discover any new anomalies please
inform us so that we may add them to our list.
ON/OFF FREQUENCY
1.
2.
5.
6.
7.
8.
CAUSE
IGNITION FAILURE
NO FLAME SENSI
NG
.
MOTOR FAILURE
FUEL PUMP FAIL
URE
GLOW PLUG FAIL
URE
BATTERY VOLTAGE ABNORMAL
REMEDY-MOVE FROM POIN
T TO POINT IN ORDER UNTIL FAULT IS LOCATED
CHECK FUEL SUPPLY > FROZEN FUEL LINE? > CHECK AND CLEAN FILTER IN FUEL PUMP > CHECK FOR BLOCKED STANDPIPE > COMBUSTION AIR OR
EXHAUST PIPE BLOCKED OR DAMAGED? > IF HEATER RUNS OK FOR APPROX 3 MINS AND STOPS-SUSPECT FLAME SENSOR > IF HEATER SMOKES
BADLY AND STOPS AFTER 3 MINS STRIP DOWN AND DECOKE.
CHECK ALL PLUG
S AND SOCKETS IN WIRING LOOM
> LOOK AT FLAME
SENSOR
;IF THE SEALANT
IS PUSHING OUT OF THE RETAINING NUT REPLACE
WITH A NEW FLA
ME SENSOR
.IF NOT CHECK F
OR BAD CONNECTIONS ON PCB INSIDE GLOW PLUG COVER
> CHECK CONTROL
BOX
.
CHECK MOTOR FUSE 12V=7.5A 24V=5A > IF FAILED ENSURE THAT MOTOR SPINS FREELY > CHECK WIRING LOOM CONTINUITY > CHECK MOTOR >
CHECK CONTROL BOX > CHECK FOR BAD CONNECTION ON PCB INSIDE GLOW PLUG COVER.
CHECK CONTROL
BOX
> CHECK CONTINUI
TY OF WIRING LOOM AND INSPECT FUEL PUMP TERMINALS FOR CORROSION
> CHECK CONTINUI
TY OF
FUEL PUMP.
CHECK GLOW PLU
G FUSE
=25A (IF APPLICABLE) > CHECK GLOW PLU
G AND GLOW PLUG RESISTOR ON
24V MODELS. > CHECK CONTROL
BOX
> CHECK
WIRING LOOM. NOTE:THE GLOW PLUG RESISTOR IS A DIFFERENT PART TO THE GLOW PLUG -DO NOT INTERCHANGE! [24 VOLT ONLY].
THE HEATER WILL CUT OFF IF THE BATTERY VOLTAGE IS TO HIGH OR TO LOW.OPERATING RANGE FOR THE 12V MODEL IS 10.5 > 14VOLTS AND THE
24V MODEL IS 21 > 28 VOLTS.CHECK THE VOLT
AGE AT THE HEATER WHILE IT IS RUNNING
(SO THAT THE BA
TTERY IS UNDER LOAD
) WITH THE BOAT
ENGINE OFF AND
AGAIN WITH THE ENGINE RUNNING TO ENSURE THAT THE VOLTAGE IS WITHIN THE OPERATING RANGE OF THE HEATER
.
9. OVERHEATING MAKE SURE THAT THE HEATER HAS COOLED DOWN AND CHECK THE MOTOR FUSE > CHECK THE AIR INLET AND THE HOT AIR OUTLET FOR
BLOCKAGETHE HOT AIR OUTLET FOR BLOCKAGE OR RESTRICTION. NOTE: OVERHEAT CUT-OUT WILL AUTOMATICALLY RE-SET WHEN THE HEATER
COOLS DOWN.
NOTES: (a)
(b)
(C)
IF THE HEATER F
AILS TO START BUT THE DIAGNOSTIC IS NOT FLASHING
-CHECK THE THER
MOSTAT BY LINKING THE TWO RED WIRES TOGETHER
.
ON INTIAL OPER
ATION OR IF THE VEHICLE HAS RUN OUT OF FUELTHE SYSTEM WILL NEED TO BE RE
-PRIMED.THIS SHOULD BE
DONE BY PUSHING
FUEL THROUGH THE PUMP WITH A SYRINGE OR BY USING THE MIKUNI SP21 PRIMING PUMP.
IF THE GLOW PLUG FAILS, INSPECT THE BOSS FOR CARBON DEPOSIT OR STRAY STRANDS OF S/S GAUZE.CLEAN AS NECESSARY AND ENSURE THAT
THE GAUZE IS N
OT BURNT OR DAMAGED
.IF IT IS REPLA
CE THE GLOW PLUG BOSS ASSY
.
MY16 Self Diagnostic Fault Finding System.
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10
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