NR83 Owners Manual

21
Troubleshooting-1
Initial Operation
Unit does not attempt to ignite
when water is running.
• Check for reversed plumbing or crossed pipes.
• Check the water drain valve lter. (
p.20 )
Unit attempts to ignite but fails
Temperature
Hot water is not available
when a xture is opened.
• Are the gas and water supply valves fully open?
• Is the water supply cut off?
• Is the hot water xture sufciently 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 lter 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 operation panel.
• 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 operation panel.
The water is too hot.
• Have you allowed enough time for the cold water in the
pipes to drain out?
Water takes time to become hot
when turning the hot water xture.
No water is available when
a xture is opened.
• Is the water supply cut off?
• Is the heater frozen?
The hot water is not the correct
temperature.
• Is the hot water xture sufciently open?
• Reset unit and try again. There may be air in the gas line.
• Have a professional check the gas supply pressure.
(Continued)
• Are the gas and water supply valves fully open?
• Is the water temperature setting appropriate?
( p.12 and p.13)
• If the amount of hot water required is very high, it is
possible for the temperature to be lower than the temp-
erature set on the operation panel.
Decrease the amount of hot water passing through the unit
and the temperature should stabilize.
The water is not hot enough.