Noritz WHiC56 Service Manual page 23

No Error Code
The operation indicator does not light when the ON/OFF button is pressed.
1-1
1-2 The fan does not operate when hot water fixture is opened
1-3 Outlet water temperature incorrect
Error Code displayed
Combustion abnormality (Output drop and Warning indication only)
(F)10
(F)11 Ignition failure (Initial flame fault detection)
(F)12 Flame Rod does not detect flame (Flame fault detection)
(F)14 Overheat Prevention Device (Thermal Fuse) triggered
(F)16 Abnormally high output temperature
(F)20 High Limit Switch triggered
(F)29 Clogging of condensate container (Water level electrode shorted)
(F)30 Air inlet thermistor abnormality
(F)31 Water inlet thermistor abnormality
(F)32 Water outlet thermistor abnormality
(F)33 Heat exchanger thermistor abnormality
(F)35 Exhaust thermistor abnormality <(L)WHiC56 only>
(F)51 Failure of Gas Solenoid Valve (or Gas Solenoid Valve drive circuit abnormality)
(F)61 Fan Motor abnormality
(F)65 Main flow control valve abnormality
(F)66 Bypass flow control valve abnormally
(F)70 Circuit Board abnormality
(F)71 Gas Solenoid Valve drive circuit abnormality
(F)72 Flame Rod circuit abnormality (Detection of flame when no flame is present)
(F)73 Circuit Board setting abnormality
Multi-system communication error
F76
(F)760 Remote controller transmission abnormality
Air flow abnormality
(F)90
Combustion abnormality
(F)94 Exhaust temperature is too high <(L)WHiC56 only>
(F)99 Combustion abnormality (Appliance is stopped)
* In a Quick Connect Multi-System, "F##" (except F76) indicates an error code from the secondary unit
(unit without a remote controller).
* (L)WHi49 series fiue systm type is Room sealed. If the heater exhibits noise and vibration when installed
with flue terminal and flue (less than 2 meters) without elbow, the DIP switch should be changed. Refer to
DIP switch table No.7 and No.8. Select "C long length".
Error
Error Code Displayed
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