26
Flashing
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Check for an Error Code
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.
Remote Controller
Have a professional check the gas supply pressure.
Contact the nearest Noritz agent.
Abnormal combustion,
low gas supply pressure
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.
Contact the installer or Noritz America Technical
Support for assistance.
Clogging of neutralizer
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.
The hot water is turbid.
• This is harmless. Small bubbles appear as the air in the
water is heated and depressurized rapidly to
atmospheric pressure.
The water appears blue
The bath tub/wash-basin has turned
blue.
• Coloration to a blue color may be noticed from small
traces of copper ion contained in the water and fat
(furring). However, there are not problems concerning
health. Coloration of the bath tub/wash-basin can be
prevented by cleaning frequently.
(Continued)
Frequent water discharge from the
drain pipe.
• Condensation forms inside the unit during operation
and is discharged from the drain pipe.
The equipment can be used for awhile, but the
maximum hot water flow available from the unit will be
reduced. Contact the installer or Noritz America
Technical Support for assistance.
The neutralizer needs to
be replaced soon.
The equipment cannot be used.
Contact the installer or Noritz America Technical
Support for assistance.
The neutralizer has reached
the end of its service life
and must be replaced.
Contact the installer or Noritz America Technical
Support for assistance.
Abnormal combustion
Troubleshooting-3