What does error code 61 mean on a Rinnai tankless water heater?

Combustion fan motor. A fault with the combustion fan motor.

Can I fix Rinnai code 61 myself?

Start with these safe checks: Check outside that the vent terminals aren't blocked, and turn the heater off and on once. Fan replacement is for a qualified technician.

When should I call a technician for code 61?

Fan 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 61: Combustion fan motor

Rinnai tankless water heaters

What 61 means

A fault with the combustion fan motor.

Likely causes

Fan motor or wiring fault
Blocked fan

Safe first checks

Check outside that the vent terminals aren't blocked, and turn the heater off and on once.

When to stop

Fan 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.