26
Troubleshooting-2
Initial Operation
Problems
What to do
Display Window
Unit does not attempt to
ignite when water is running.
Check for reversed plumbing?
Check the water drain valve filter. (
p.23)
Unit attempts to ignite but
fails.
Reset unit and try again. There may be air in the gas line.
Have a professional check the gas supply pressure.
The hot water is not the
correct temperature.
The water may be mixed in the hot water plumbing.
The actual outlet water temperature is lower than the set
temperature of the unit.
Contact the nearest Noritz agent.
Temperature
Problems
What to do
Display Window
Hot water is not available
when a fixture is opened.
Are the gas and water supply valves fully open?
Is the water supply cut off?
(Check for the circular pattern in the Display Window.)
Is the hot water fixture sufficiently open?
Is the gas being cut off by the gas meter?
(Can other gas device such as stoves be used?)
(For LP) Is there enough gas in the tank?
(Can other gas devices such a stoves by used?)
Is the water drain valve filter clogged? (
p.23)
Is the power button (optional remote controller) turned on?
No water is available
when a fixture is opened.
Is the water supply cut off?
(Check for the circular pattern in the Display Window.)
Is the unit frozen?
The hot water at the
fixture is not the correct
temperature.
Is the hot water fixture sufficiently open?
The actual outlet water temperature is lower than the set
temperature of the unit.
Contact the nearest Noritz agent.
Water takes time to
become hot when turning
the hot water fixture.
Have you allowed enough time for the cold water in
the pipes to drain out.
The hot water at the
fixture is too hot.
Are the gas and water supply valves fully open?
[Using the optional remote controller]
Is the water temperature setting appropriate? ( p.14)
[Using the optional remote controller]
If the water supply temperature is high, it is possible
for the outlet temperature to be higher than the
temperature set on the remote controller.
[Using the optional remote controller]
If only a low flow of hot water is demanded, it is
possible for the outlet temperature to be higher than the
temperature set on the remote controller.
or
