John Wood Noritz N-069M-DV - Manual (Page 21)

21
Troubleshooting-1
Initial Operation
Unit does not attempt to ignite
when water is running. • Is water running?
• Check for reversed plumbing or crossed pipes.
• Check the water drain valve filter. ( p.20 )
• Reset unit and try again. There may be air in the gas line.
• Have a professional check the gas supply pressure.
Unit attempts to ignite but fails
Temperature
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?
• 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?)
• Is the water drain valve filter clogged? ( p.20)
• Is the power button turned on?
• Are the gas and water supply valves fully open?
• Is the water temperature setting appropriate?
( p.12 and p.13)
• If the water supply temperature is high, it is possible
for the temperature to be higher than the temperature
set on the remote controller.
• If only a small amount of hot water is demanded, it is
possible for the temperature to be higher than the
temperature set on the remote controller.
• If the supply water goes through a solar pre-heating
system, it is possible for the temperature to be higher
than the temperature set on the remote controller.
The water is too hot.
• Have you allowed enough time for the cold water in the
pipes to drain out?
• Is the water supply cut off?
• Is the heater frozen?
• Is the hot water fixture sufficiently open?
No water is available when
a fixture is opened.
The hot water is not the correct
temperature.
Water takes time to become hot
when turning the hot water fixture.
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