Toyotomi BS-35(F) - Manual (Page 15)

15
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 CAUSE SOLUTION
POWER LAMP
FAILS TO TURN ON Disconnected power supply cord
Bi-metal switch activated Connect power supply cord.
Consult your dealer
WARNING LAMP
LIGHTS AFTER
TURNING ON.
Thermistor malfunction
Out of water in heat exchanger
Flame sensor malfunction
Light is received on the receiving
surface of photoelectric cell Consult your dealer.
Supply water.
Consult your dealer.
Consult your dealer.
BLOWER MOTOR
OPERATES BUT
IGNITION FAILS. Abnormal location and
adjustment of electrode
Igniter malfunction.
Abnormal lowering of electrical
voltage
Out of fuel
Air pocket in fuel pipe.
Clogged fuel strainer
Circuit board malfunction Consult your dealer.
Consult your dealer.
Contact electricians.
Check fuel gauge on fuel tank;
refuel.
Remove air pocket.
Clean strainer.
Consult your dealer
EXTINGUISHED
AFTER IGNITION Stained beam receiving surface
of flame sensor
Flame sensor malfunction
Air pocket in fuel pipe Consult your dealer.
Replace it.
Remove air pocket completely.
NOISE FROM FUEL
PUMP Air lock in fuel line
Clogged intake line and pump Remove air.
Consult your dealer.
NOISY
COMBUSTION
NOISE FROM Fuel flow too much
Fuel flow too little
Fuel nozzle malfunction
Improper installation of exhaust
pipe
Consult your dealer.
Consult your dealer.
Replace it.
Re-install properly.
HOT WATER TEMP
TOO LOW Thermistor malfunction
Hot water supply beyond capacity Consult your dealer.
Close hot water faucet partially.
SOOT
ACCUMULATION Dusty blower motor fan
Improper installation of flue pipe
Fuel flow too much
Fuel nozzle malfunction Consult your dealer.
Re-install properly.
Consult your dealer.
Replace it.
FUEL LEAKAGE
FROM FUEL PIPE Loose connection of fuel pipes Consult your dealer.
WATER LEAKAGE
Water leakage from heat
exchanger (Heat exchanger
malfunction)
Gasket malfunction Consult your dealer.
Replace it.