27
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.
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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 flash 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
flash together.
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 fixture,
and turn the unit back on. If the flashing number
doesn't return the problem is solved.
Flashing
Remote Controller
Check to see if the condensate drain pipe is clogged
or frozen (
p.8)
Contact the installer or Noritz America Technical
Support for assistance.
Clogging of condensate
trap or drain pipe
Clean the air supply vent.(
p.21)
If the display continues, contact the nearest Noritz
agent.
[When supplying combustion
air from the indoors]
The air supply vent may
be clogged.
Have a professional check the gas supply pressure.
Contact the nearest Noritz agent.
Abnormal combustion,
low gas supply pressure
