Dux 21ENB5N - Troubleshooting

Owner's Guide
25
Part: XXXXX Rev XX
Initial Operation
Temperature
Unit does not attempt to ignite
when water is running.
• Check for reversed plumbing or crossed pipes.
• Check the inlet water filter. (
p.24)
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.
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 inlet water filter clogged? (
p.24)
• Is the operation button turned on?
No water is available when
a fixture is opened.
• Is the water supply cut off?
• Is the heater frozen?
The hot water is not the correct
temperature.
• Is the hot water fixture sufficiently open?
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 water is too hot.
• Are the gas and water supply valves fully open?
• Is the water temperature setting appropriate?
(
p.14 and p.15)
• 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.
The water is not hot enough. • Are the gas and water supply valves fully open?
• Is the water temperature setting appropriate?
(
p.14 and p.15)
(Continued)
Troubleshooting