29
Other
Problems
What to do
Display Window
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 LP) Is there enough gas in the tank?
(Can other gas devices such as stoves be used?)
White smoke comes out of the
exhaust vent 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.
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.
Sounds
Problems
What to do
Display Window
The fan can be heard after
operation is stopped.
A motor can be heard when turning
the unit ON or OFF, when opening
or closing a fixture, or after the unit
has been running for a while.
These noises indicate the proper operation of devices
which are designed to let the unit reignite more
quickly, and ensure the water temperature is stable.
The fan can be heard when
it is very cold outside.
The fan may run to prevent freezing.
There is a buzzing, beeping
or humming noise emitting
from the unit.
This noise is a normal function of the unit.
The valves that control the water flow through the unit
move during operation and also when the unit is not
heating water.
Loud rumbling noise on
start up or during operation
emitting from the unit or vent
system.
The unit may need adjustments done for installations
higher than 2000ft above sea level or for longer
vent runs. Please contact your installer or Noritz to
verify the unit dip switches are set correctly for your
installation.
