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Value Series Manual 35
Code Denion Remedy
19 Electrical Grounding
licensed
professional
only
Check all components for electrical short.
32
Outgoing Water
Temperature Sensor
Check sensor wiring for damage.
Measure resistance of sensor.
Clean sensor of scale build-up.
Replace sensor.
33
Heat Exchanger Outgoing
Temperature Sensor
34
Combuson Air
Temperature Sensor Fault
Check for restricons in air ow around unit and vent terminal.
Check sensor wiring for damage.
Measure resistance of sensor.
Clean sensor of scale build-up.
Ensure fan blade is ght on motor sha and is in good condion.
Replace sensor.
41
Outside temperature
thermistor
Check sensor wiring for damage.
Measure resistance of sensor.
Clean sensor of scale build-up.
Replace sensor.
51
Inlet water temperature
thermistor
52
Modulang Solenoid Valve
Signal
Check modulang gas solenoid valve wiring harness for loose or damaged terminals.
Measure resistance of valve coil.
61 Combuson Fan
Ensure fan will turn freely.
Check wiring harness to motor for damaged and/or loose connecons.
Measure resistance of motor winding.
65 Water Flow Control
The water ow control valve has failed to close during the bath ll funcon. Immediately turn
o the water and disconnue the bath ll funcon. Contact a licensed professional to service
the appliance.
70 PC Board
Check PC board DIP switches for correct posion.
Check the connecon harness at the connecon on the PC board.
Replace PC board.
71 Solenoid Valve Circuit Replace the PC Board.
72 Flame Sensing Device
Verify ame rod is touching ame when unit res.
Check all wiring to ame rod.
Remove ame rod and check for carbon build-up; clean with sand paper.
Check inside burner chamber for any foreign material blocking ame at ame rod.
Measure micro amp output of sensor circuit with ame present.
Replace ame rod.
79 Water Leak Detected
Water has been detected at the boom of the unit. Turn o water supply. Check all plumbing
internally for leakage.
LC #
(LC0,
LC1,
LC2,…)
Scale Build-up in Heat
Exchanger (when checking
maintenance code history,
“00” is substuted for “LC”)
LC0~LC9 indicates that there is scale build up in the heat exchanger and that the heat
exchanger needs to be ushed to prevent damage. Refer to the ushing instrucons in the
manual. Hard water must be treated to prevent scale build up or damage to the heat
exchanger.
To operate the water heater temporarily unl the heat exchanger can be ushed, push the
On/O buon on the temperature controller 5 mes. Repeated LC codes will eventually
lockout the water heater.
Please call Rinnai technical department.
FF
Maintenance has been
performed
Indicates a licensed professional performed maintenance or corrected an issue.
No
code
Nothing happens when
water ow is acvated.
Clean inlet water supply lter.
On new installaons ensure hot and cold water lines are not reversed.
Verify you have at least the minimum ow rate required to re unit.
licensed
professional
only
Check for cold to hot cross over. Isolate circulang system if present. Turn o cold water to
the unit, open pressure relief valve; if water connues to ow, there is bleed over in your
plumbing.
Verify turbine spins freely.
Measure the resistance of the water ow control sensor.
If the display is blank and clicking is coming from the unit, disconnect the water ow servo
motor (GY, BR, O, W, P, BL, R). If the display comes on then replace the water ow servo
motor.
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