How Many Millivolts For This Thermocouple? - HVAC - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 12-02-2013, 02:26 PM   #1
Member
 
Join Date: Dec 2006
Location: Fountain Valley, CA 92708 (orange county)
Posts: 660
Rewards Points: 504
Default

How many millivolts for this thermocouple?


My fireplace pilot light won't start. An appliance store tested the thermocouple and said it was okay.
Should this thermocouple put out between 18-30 millivolts when in the lighting flame? There is a tiny bit of exposed wire, could this have ground out the thermocouple? I want to check everything before pulling the gas valve.

Advertisement

darsunt is offline   Reply With Quote
Old 12-02-2013, 06:32 PM   #2
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 26,546
Rewards Points: 4,730
Default

How many millivolts for this thermocouple?


Do you have a thermocouple, or a thermopile/powerpile.

Thermocouple, 25 to 30, powerpile 500 plus mV.

Thermocouple has no wires, thermopile has 2 wires.

Advertisement

__________________
When posting in certain forums, knowing your location will help others give better feedback/advice/solutions to your questions.
beenthere is online now   Reply With Quote
Old 12-02-2013, 07:52 PM   #3
Member
 
Join Date: Dec 2006
Location: Fountain Valley, CA 92708 (orange county)
Posts: 660
Rewards Points: 504
Default

How many millivolts for this thermocouple?


It has 2 wires. So must be a thermopile? Thanks

How much does a thermopile usually cost? And why use a thermopile over a thermocouple?
darsunt is offline   Reply With Quote
Old 12-02-2013, 09:32 PM   #4
Plumber & Gasfitter
 
Join Date: Dec 2012
Location: Vancouver, Canada
Posts: 116
Rewards Points: 77
Default

How many millivolts for this thermocouple?


Thermocouples circuit powers a pilot coil, thermopiles circuit runs the pilot coil, main gas coil, and pass power thru wall switch, door switch, high limit and anything else required.
joeplumber85 is offline   Reply With Quote
Old 12-02-2013, 11:36 PM   #5
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 26,546
Rewards Points: 4,730
Default

How many millivolts for this thermocouple?


40 bucks, give or take a few dollars.
__________________
When posting in certain forums, knowing your location will help others give better feedback/advice/solutions to your questions.
beenthere is online now   Reply With Quote
Reply


Thread Tools
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
How to diagnose gas valve problems Nestor_Kelebay How To Guides 28 10-30-2013 05:19 PM
Need help with thermocouple replacement on MC furnace YerDugliness HVAC 8 01-13-2012 08:24 PM
Thermocouple nut problem w/ gas fireplace movick724 Appliances 1 11-08-2011 04:00 AM
Thermocouple and Gas Valve dimjim HVAC 10 03-22-2011 11:05 PM
Resource for understanding gas valve? darsunt HVAC 19 02-04-2009 12:08 AM




Top of Page | View New Posts