NCC300 Owner's Guide
41
The water appears blue
The bath tub/wash-basin has turned
blue
• Coloration to a blue color may be noticed from small
traces of copper ion contained in the water and fat
(furring). However, there are not problems concerning
health. Coloration of the bath tub/wash-basin can be
prevented by cleaning frequently.
Frequent water discharge from the
drain pipe.
• Condensation forms inside the unit during operation
and is discharged from the drain pipe.
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 xture/faucetsufcientlyopen?
• Is the gas being cut off by the gas meter?
(Can other gas devices such as stoves be used?)
• (For LP) Is there enough gas in the tank?
(Can other gas devices such as stoves be used?)
• This is normal. The white smoke is actually steam.White smoke comes out of the
exhaust vent on a cold day.
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.
Other
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.