Use and Care Manual

28
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Check for an Error Code on the Remote Controller
If there is a problem with the unit, a numerical error code will ash on the remote controller.
If this occurs, take appropriate measures as listed below.
When an error code appears, the display and the operation light will
ash together.
Flashing
Remote Controller
Troubleshooting-3
Contact the nearest Noritz agent.Abnormal combustion
Contact Noritz America if:
• Any other error code appears.
• An error code is indicated again after the above actions were followed.
• There are any other questions.
Error Code Cause Action
Ignition error
Check whether the gas valve is open. Press the power
button to turn the unit off, open a hot water xture,
and turn the unit back on. If the ashing number
doesn't return the problem is solved.
This unit is equipped with an automatic service reminder.
Excessive scale build-up may cause premature failure
of the heat exchanger.
Excessive dust or lint build-up in the fan and air intake
may affect efciency and combustion performance.
Contact Noritz America for additional information about
recommended maintenance procedures (866-766-7489).
Service Reminder
(Warning Indication)
#
#=1-9
Check air supply vent for blockage or obstruction.
(
p.21)
[When supplying combustion
air from the indoors]
The air supply vent may
be clogged.
Check exhaust vent for blockage or obstruction.
Have a professional check the gas supply pressure.
Check condensate drain line is clogged or frozen.
If the display continues, contact nearest Noritz agent.
Exhaust vent may be clogged.
Abnormal combustion,
low gas supply pressur.
Condensate drain line may
be clogged.