Length of Thermocouple - Fiberglass RV

Thread Tools Search this Thread Display Modes
Old 07-09-2009, 08:38 AM   #1
Senior Member
kevin61's Avatar
Trailer: Two 13 ft Bolers and one 17 ft Boler
Posts: 325
I am picking up a thermocouple for a friends' fridge. I have seen several universal one's at the RV shop. The one presently on the unit appears to be about 24 inches long and is coiled.

Does the length of the thermocouple coil/tube matter or can I replace it with a shorter one? I realize the sensor has to be long enough to reach the flame.

Disregard the "Male or Female" thread question on the photo as this was a question I had sent to the fridge owner

Click image for larger version

Name:	Boler_Thermocouple_001.jpg
Views:	40
Size:	85.7 KB
ID:	21520

kevin61 is offline   Reply With Quote
Old 07-09-2009, 10:33 AM   #2
Senior Member
Trailer: 84 16 ft Scamp
Posts: 725
It is the tip that has the two dissimilar metals fused together that provide a small electrical current when heated, proportional to the amount of heat. The length of the tail has no significance.

As long as the connections to the sensor are intact, the thermocouple is functional. The main problem is the current level is very small, so any discrepancy in the the end connection can cause it not to work. Cleaning that tiny connector almost always corrects the problem.

On a recent trip our gas refrigerator wouldn't stay lit. All I had available small enough to clean it was a tooth pick and some auto paint rubbing compound. A minute of swirling a tiny bit of compound around with a blunted tooth pick did the trick and the refrigerator worked fine.

I doubt this is a recommended procedure, but it worked for me in a pinch. So if you do it, you are on your own!

Loren G. Hedahl is offline   Reply With Quote
Old 07-09-2009, 01:36 PM   #3
Senior Member
Trailer: 2002 19 ft Scamp 19 ft 5th Wheel
Posts: 2,782
Send a message via Yahoo to Darwin Maring
Loren is right on.

Clean the connection on the thermocouple along with where it inserts in to the gas regulator.

You can Measure the voltage with a digital meater. It is quite possible that cleaning the connections (both) may have solved the problem with the old Tcouple.

CrapShack sells an electrical cleaner for around $16 USD and 1 spray cleans and the other protects. The 2 spray cans are a little larger than a lipstick tube. Small, Pricey but well worth it.
Darwin Maring is online now   Reply With Quote
Old 07-09-2009, 03:59 PM   #4
Senior Member
kevin61's Avatar
Trailer: Two 13 ft Bolers and one 17 ft Boler
Posts: 325
I have downloaded a bunch of refrigeration manuals and troubleshooting guides and have noticed the above techniques mentioned. I will just pick up a few different lengths of thermocouples and see which fits the best. The extras will go in the "spares" box.
kevin61 is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Duo-Therm 65810-2 (pilot/thermocouple) joe.stubbs Problem Solving | Owners Helping Owners 2 07-15-2009 11:55 PM
Heater Thermocouple needed Dave Mac Problem Solving | Owners Helping Owners 11 11-06-2008 11:52 AM
Trailer Length LeeAnne General Chat 8 04-19-2007 09:19 PM
full length cabinet Joe MacDonald Modifications, Alterations and Updates 11 12-09-2005 12:22 PM

» Upcoming Events
No events scheduled in
the next 465 days.
» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:54 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.