What does error code 32 mean on a Rinnai tankless water heater?

Outgoing water temperature thermistor fault. The outgoing water temperature sensor has a fault.

Can I fix Rinnai code 32 myself?

Start with these safe checks: Note the code and turn the heater off and on once. Sensor replacement is for a qualified technician.

When should I call a technician for code 32?

Sensor replacement is for a qualified technician. Smell gas? Leave right away, don't touch light switches or phones inside, and call your gas utility or 911 from outside. Never open a gas valve, burner, gas line, vent or flue connection, or bypass a safety switch. Repeated lockouts, scorching, soot, or a CO alarm mean shut it off and call a licensed gas technician.

Rinnai tankless water heater error code

Rinnai tankless water heater code 32: Outgoing water temperature thermistor fault

Rinnai tankless water heaters

What 32 means

The outgoing water temperature sensor has a fault.

Likely causes

Sensor or wiring fault

Safe first checks

Note the code and turn the heater off and on once.

When to stop

Sensor replacement is for a qualified technician.

Checked against: Rinnai: Troubleshooting Tankless Water Heater Diagnostic Codes (100000652). Codes can differ by model and year, so confirm with your owner's manual.