NCC300 Owner's Guide

38
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.36)
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/faucet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.36)
• Is the power button turned on?
• Are the gas and water supply valves fully open?
• Is the water temperature setting appropriate? (
p.19)
• 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 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/faucet.
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/faucet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.19)
• 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 remote controller.
Decrease the amount of hot water passing through the unit
and the temperature should stabilize.
The water is not hot enough.