Rheem 305, 505, 705 Error 61: Combustion Fan Failure

Tankless water heater · taken from the manufacturer’s manual, pages cited

Fault code61

Combustion Fan Failure indicates the fan does not turn freely or motor winding resistance is abnormal. The manual's first action is: “Check wiring harness to motor for damaged and/or loose connections.”

Model
Rheem 305, 505, 705
Display shows
Combustion Fan Failure (61)
Type
Fault code
Source
Manual p. 10

What 61 means

Combustion Fan Failure p. 10

Common causes

  • Ensure fan will turn freely. p. 10
  • Measure resistance of motor winding. p. 10

What to do

  1. Check wiring harness to motor for damaged and/or loose connections. p. 10

Before you service the product, read the safety instructions in the manual p. 4.

If 61 is still not resolved

  • Immediately call your gas supplier from a neighbor’s phone. p. 1
    “Immediately call your gas supp lier from a neighbor’s phone.”
  • If you cannot reach your gas supplier, call the fire department. p. 1
    “If you cannot reach your gas supplier, call the fire department.”
Open the manual at page 10 All 305, 505, 705 error codes Manual details & download

This page summarises what the manufacturer’s manual says about 61; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Rheem. Found a mistake? Report an error.