Rinnai Code 61: Combustion Fan Motor Failure

Quick Answer

Rinnai Code 61 is a definitive fan motor failure, more severe than Code 63 which may involve a sensor or speed issue. Code 61 typically means the blower motor is not running at all: it has burned out, seized, or the motor drive circuit on the PCB has failed. The most common cause on units over 7 years old is motor burnout from bearing wear. Fan blade damage or a physical obstruction that jammed the blade can also cause Code 61 by overloading the motor to the point of failure. This is a high-voltage component repair that requires a qualified technician for safe motor replacement. Fan motor assemblies for Rinnai typically cost $80 to $150.

RinnaiWaterheaterSeverity: highDifficulty: advanced68% DIY Success

Time to Fix

45–150 min

Difficulty

advanced

Parts Cost

$8 – $150

Tools Needed

Non-contact voltage tester, Screwdriver set

Wrong code?

Not seeing 61 on your display?

Select what your appliance is actually doing and we'll take you to the right guide.

combustion blower fault

NavienE110

What Does the 61 Code Mean?

Fan motor is not running at all, not just slow or erratic. Usually a burned-out motor on an aging unit. Professional service recommended due to high-voltage motor components.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Fan motor burned out from bearing wear or overload40%

Fan blade physically obstructed or damaged, causing motor seizure24%

Motor wiring harness burned or broken14%

PCB motor drive circuit failure preventing motor power supply12%

Run capacitor failure on single-phase fan motor10%

Symptoms You May Notice

Code 61 on controller display
No fan sound at all when hot water is demanded
Burning smell from unit compartment (if motor has burned)
Unit was previously showing Code 63 intermittently before progressing to Code 61
Visible scorch marks or discoloration around fan housing

Can you reset a Rinnai waterheater to clear the 61 code?

After replacing the fan motor or capacitor, restore power at the breaker and trigger a hot water demand. The unit should run through its fan pre-purge sequence (fan runs for approximately 30 seconds before ignition attempt). If the fan runs through pre-purge and Code 61 does not return, the repair was successful.

Tools Required for Diagnosis

Non-contact voltage testerScrewdriver setMultimeter with capacitance modeNeedle-nose pliers (for capacitor terminals)Flashlight

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

Disconnect power at the circuit breaker

Disconnect power at the circuit breaker. Verify no power with a non-contact voltage tester before opening the unit. Remove the front access panel and locate the combustion fan assembly.

Attempt to rotate the fan blade by hand

Inspect the inside of the fan housing for any object that could

Disconnect the motor wiring harness

If the motor winding tests good

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name	OEM Number	Estimated Price
Combustion Fan Motor AssemblyContact Rinnai with model number · $80–$150	Contact Rinnai with model number	$80 – $150
Run CapacitorVaries by motor specification · $8–$20	Varies by motor specification	$8 – $20

Verify part fitment for your Rinnai model

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs

Labor Approach

Our Verdict

REPAIR

Estimated Cost: $79 (Parts) vs $1250 (New Machine)

Frequently Asked Questions

How do I know if my Rinnai has Code 61 versus Code 63?

Both appear as numeric codes on the controller display. Code 63 typically appears when the fan is running but not reaching correct speed, or when the speed sensor reports an anomaly. Code 61 appears when the fan motor has completely failed to run. In practice, Code 63 can precede Code 61 as a motor progressively fails; if you have been seeing intermittent Code 63 errors, Code 61 may follow.

Can I replace a Rinnai combustion fan motor myself?

The mechanical aspect of fan replacement (removing screws and swapping the assembly) is manageable for experienced DIYers. However, the motor connects to mains voltage (120V AC). You must verify power is off with a non-contact tester before touching any wiring. If you are not comfortable working with line voltage wiring, have a technician perform the replacement.

My Rinnai is 12 years old and just got Code 61. Is it worth repairing?

At 12 years, a fan motor replacement is likely worthwhile if the rest of the unit is in good condition. A fan motor costs $80 to $150 plus labor, versus a new unit at $700 to $1,800. However, if the heat exchanger shows signs of scale damage or corrosion, or if other components are aging, weigh the total picture. Ask your technician to inspect the heat exchanger during the fan repair visit.

What causes a Rinnai fan motor to burn out prematurely?

The most common cause of premature motor failure is a previously unresolved blockage (Code 63 ignored over time) that forced the motor to run against resistance, generating excess heat. Humid installation environments that corrode the motor bearings also shorten motor life. Running the unit with the access panel removed allows extra moisture and debris into the fan compartment and is a common issue in non-professional installations.

Will a hard reset fix Rinnai Code 61?

No. Code 61 is a hardware fault, not a software or communication error. A reset will clear the displayed code temporarily, but the fan motor will still fail to run on the next heating demand and Code 61 will return within seconds. The motor, capacitor, or PCB drive circuit must be physically repaired or replaced.

Related Rinnai Waterheater Error Codes

Code: HUBRinnai Tankless Water Heater Error Codes: Complete Guide Code: 63Rinnai Code 63: Combustion Fan Error Code: 55Rinnai Code 55: Combustion Abnormality Detected Code: RESETHow to Reset a Rinnai Tankless Water Heater: All Models Guide

Same Fix on Other Brands

Navien waterheaterE110: Navien E110 Error Code: Exhaust Blockage and Venting Fault Explained

Models Known to Experience 61 Errors

This repair applies to most Rinnai waterheaters with this error code. Common model numbers include:

RUR98iN, RU199iN, RU98eN, V65iN, RL75iN, RU160iP

Last verified for technical accuracy on March 14, 2026