Question about Rinnai RHFE-1004FA 38,400 BTU Energy Saver Ductless Heater - LP Gas

2 Answers

The answer to my previous question stated that the "fusible link" may be open. How do I identify the "fusible link" on the unit?

Have been getting error code 99 which indicates a blocked flue, but I've cleared the flue and am getting the same result. your previous answer indicated that the "fusible link" may be open. How do I identify this on the unit?

Posted by on


2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 16 Answers

There could be up three thermal fuses on this type of heater.
please see the attached link and on page 35 there is an electrical schematic showing the three thermal fuses TF1, TF2, and TF3.
A quick test could be done by placing a temporary short across the blue and white wires.
NOTE: this test should only be performed by qualified personnel as there could be dangerous voltages present.
Also the short must be removed after the test, and under no circumstances is the short to be left in place as this will disable all protection devices in this part of the circuit.
If this test enables the unit to operate correctly then the wires will have to be traced to find the exact location of the faulty thermistor.
Thermistor will look like a cylindrical component with a solid wire coming out each end.

Posted on Dec 06, 2014

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has written 50 answers of more than 400 characters.

  • Expert
  • 166 Answers

On miscellaneous heaters gas(some oil fired heaters) have what is called a spill out switch---this is located where--- if the stack is plugged the heat/flue gases will spill out and melt a heat sensitive switch causing it to shut the system down---- if this has happened you---you have to replace this in order for the heater to function---these sensors/switches are connected in series for safety to eliminate carbon monoxide poisoning----de>th----fire

Posted on Dec 06, 2014


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

What could becausing my raypak model 406A natural gas pool heater is not working states roll out sw open

replace fusible link but see why it overheated wind or not enough gas pressure

Aug 17, 2014 | Raypak Pool & Spa

1 Answer

My Rinnai 1004F giving me error code 99

This fusible link may be open. Try jumpering the two leads and see if the unit operates. If it does replace the fusible link. Do not operate the unit without the fusible link for an extended period. It is a safety device and is there for a reason. Hope this helps.

Jan 04, 2014 | Rinnai RHFE-1004FA 38,400 BTU Energy Saver...

1 Answer

Rollout switch is open?

You possibly have a Flaming out problem. Your "One" time rollout sensor needs to be replaced, then the reason for the rollout needs to be identified! Very Important! Get a qualified heater service center out to diagnose this problem. Don't just replace the rollout sensor. Sometimes these are called Fusible Link.

Oct 06, 2013 | Rheem 266K to 399K BTU Swimming Pool...

1 Answer


Given the limited information, the short answer is YES. A fusible link or the car's version of a circuit breaker is responsible for the headlights and other accessories. There may be other things not working that you haven't identified yet. Since it's extremely rare for both headlights to cease working at the same time, either 1 stopped a little earlier and it went unnoticed, or there's an electrical problem (likely a fusible link) that is the cause. It's been my experience that automobile electrical specialists are much better than dealerships or regular service stations at diagnosing these problems. They don't come cheap but it's usually $$$ well spent. Best of luck with your headlight problem.

Nov 04, 2011 | 2003 Chevrolet Monte Carlo

1 Answer

Fusible link replacement on a 1994 ford escort

you dont say the problem or what the car is doing,if you are asking me can you get a new fusible link then the answer is yes they are common to buy in any auto shop.if you want me to answer a direct question please come back to me and i will sort the problem.adrian,,,,,,

Dec 03, 2010 | 1994 Ford Escort

2 Answers

Getting fire but fuel pump aint running

Check the fuel pump relay/fuse.

Circuit Protection The fuse box is located low on the left side of the dashboard behind a cover, or at the left side kick panel, behind a cover.
Fusible links are located in a holder next to the battery.
The fuse panel is located behind a snap-off cover in front of the driver's left knee.
Fusible links are sections of wire, with special insulation, designed to melt under electrical overload. Replacements are simply effected by removing the old unit and inserting the new into the block. Fusible links are identified by the color of their housing.

Also, your fuel pump may be bad. Check the fuse/relay first.

Dec 07, 2009 | 1992 Hyundai Excel

1 Answer

I dont know which is the fusible for the lights.

Not sure about the colt - but not other dodge has fusible links - all others use cartridge (flat, 2-prong) fuses.

Yours are identified on the fuse cover plate.

Oct 22, 2009 | 1986 Dodge Colt Vista Wagon

1 Answer

Is there a horn relay and how do i identify it

Horn relay in fuse fusible link box.Fuse #25 15Amps fusible link box near battery

Aug 30, 2009 | 2003 Nissan Altima

1 Answer

Light turns on, but no heating.

Pull apart again. you will see leads insulated with cloth-like insulation. feel for a bulge or two - usually a fuse is hidden in one of those insulations. Find it test it for continuity. If flown, cut it out, replace or just short out that connection.

Jul 21, 2009 | Krups 296 ProChef Ultra 1500 Watts Toaster...

1 Answer

Hourglass Picture

it easy to locate the fusible resistor in the power module PCB,it look like a resistor but white in color,normally printed soc xxxx (2100) on top of the component. After you replaced the STK392-110 , you need to re-alight the convergence setting again.hope it will help.

Aug 03, 2007 | Pioneer SD-533HD5 53" Rear Projection HDTV

Not finding what you are looking for?
Rinnai RHFE-1004FA 38,400 BTU Energy Saver Ductless Heater - LP Gas Logo

94 people viewed this question

Ask a Question

Usually answered in minutes!

Top Rinnai Heating & Cooling Experts


Level 3 Expert

2514 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Tim Whalen

Level 3 Expert

3074 Answers

Are you a Rinnai Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides