32
Noritz
Outlet Thermistor Fault
Error code 32 displayed; unit may operate erratically or shut down.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Open or shorted outlet thermistor, Damaged sensor wiring, Loose connector at control board, Sensor drift out of calibration
How to Fix / Troubleshooting
Safety first: Turn OFF power and gas before servicing.
Steps to check and correct:
- Locate outlet thermistor: Identify the outlet temperature sensor on the hot water outlet side of the Noritz heater.
- Inspect wiring: Look for damage, corrosion, or loose connections. Reseat the connector at the sensor and PCB.
- Test sensor (if equipped): Use a multimeter to measure resistance and compare with Noritz specifications at known temperatures. Replace the outlet thermistor if readings are incorrect.
- Reset and test: Restore power and run hot water. Persistent error 32 may indicate a PCB fault requiring professional replacement.
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Repair Difficulty
Medium
3/5
Required Part
Outlet Thermistor
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