Section F; Troubleshooting - Toyotomi FB-38N Operation And Maintenance Instructions

SECTION F:

TROUBLESHOOTING

WARNING: RISK OF INJURY FROM MOVING PARTS AND ELECTRIC SHOCK.
Disconnect the Power Supply Cord before servicing unit. All repairs should be left
to professionals.
Do not re-use the unit until the cause of the problems have been determined.
CAUTION: RISK OF BURN INJURY. Do not touch the unit and the Heat Exchanger while in hot.
If there Is any abnormality, determine for the causes from the list below and perform the specified
measure. Consult your dealer if problems cannot be corrected from this chart.
PROBLEM
POWER LAMP FAILS
TO TURN ON
ALARM LAMP
LIGHTS AFTER
TURNING ON.
BLOWER MOTOR
OPERATES BUT
IGNITION FAILS.
EXTINGUISHED
AFTER IGNITION
NOISE FROM FUEL
PUMP
NOISY
COMBUSTION
HOT WATER TEMP
TOO LOW
SOOT
ACCUMULATION
DOES NOT HEAT
FUEL LEAKAGE
FROM FUEL PIPE
WATER LEAKAGE
ERROR
CAUSE
CODE
- Disconnected power supply cord Connect power supply cord.
E3 Thermistor malfunction
E9 Bi-metal switch activated
E9 Thermal fuse activated
E2 Flame sensor malfunction or
light is received on the receiving
surface of photoelectric cell
E7 Abnormal location and
adjustment of electrode
E7 Igniter malfunction.
E7 Abnormal lowering of electrical
voltage
E7 Out of fuel
E7 Trapped air in fuel pipe.
E7 Clogged fuel strainer
E7 Circuit board malfunction
E6 Stained photoelectric cell
E6 Trapped air in fuel pipe
E6 Excessive air for combustion
Flame sensor malfunction
E6
- Air lock in fuel line
Clogged intake line and pump
- Fuel flow too much
Fuel flow too little
Improper installation of Exhaust
Pipe
- Thermistor malfunction
- Dusty blower motor fan
Improper installation of flue pipe
Fuel flow too much
- Power switch of remote
controller is not pressed
Leakage from circulation part
Insufficient removing air
- Loose connection of fuel pipes
- Water leakage from heat
exchanger (Heat exchanger
malfunction)
16
SOLUTION
Replace it.
Reset after eliminating cause.
Replace it.
Repair or replace it.
Consult your dealer.
Consult your dealer.
Contact electricians.
Check fuel gauge on fuel
tank; refuel.
Remove the trapped air.
Clean strainer.
Consult your dealer
Clean it.
Remove the trapped air.
Consult your dealer.
Replace it.
Remove air.
Consult your dealer.
Consult your dealer.
Consult your dealer.
Consult your dealer.
Consult your dealer.
Consult your dealer.
Re-install properly.
Consult your dealer.
Press Power switch.
Consult your dealer.
Consult your dealer.
Consult your dealer.
Consult your dealer.