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The heater stops burning during
operation.
• Are the gas and water supply valves fully open?
• Is the water supply cut off?
• Is the hot water fixture sufficiently open?
• Is the gas being cut off by the gas meter?
(Can other gas devices such as stoves be used?)
• (For LPG) Is there enough gas in the tank?
(Can other gas devices such as stoves be used?)
White smoke comes out of the flue
exhaust on a cold day.
• This is normal. The white smoke is actually steam.
The hot water is turbid. • This is harmless. Small bubbles appear as the air in the
water is heated and depressurized rapidly to atmospheric
pressure.
The water appears blue
The bath tub/wash-basin has turned
blue.
•
Colouration
to a blue colour may be noticed from small
traces of copper ion contained in the water and fat (furring).
However, there are not problems concerning health.
Colouration of the bath tub/wash-basin can be prevented by
cleaning frequently.
Frequent water discharge from drain
pipe.
(Condensing model only)
• Condensation forms inside the unit during operation and is
discharged from the drain pipe.
A small amount of water is
discharged from the pressure relief
valve.
• This is normal. When the water heater is under high
pressure, a small amount of water may be discharged from
the pressure relief valve.
Other
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