Forums | Home Repair | Home Improvement | Painting | Interior Decorating | Remodeling | Landscaping


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

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

Reply
 
Thread Tools Search this Thread Display Modes
Old 11-05-2012, 01:12 PM   #1
Newbie
 
Join Date: Nov 2012
Location: Central Florida
Posts: 4
Share |
Default

Miswired T-stat or Bad Heater Relay??


In March I installed a barely used, older matched Rudd split system in my Florida Mobile Home, that I have had in storage for 10 years. My nephew , in the business, wired my t-stat, and supplied the freon. Another friend, whom I had been paying for 3 years to anually add freon to my recently replaced split-system, realized that the electric heater was engaged while system was calling for cooling...He stated that it was his opinion that a heater relay was defective...We disconnected the three black leads going to heat coils and enjoyed a trouble free summer of cooling. Now the weather is beginning to cool and I will be in need of heat soon. I am looking for troubleshooting techniques to determine which relay may be defective, or is my t-stat miswired, or could it be a heat limiter bad(whatever that is).
jusmerod is offline   Reply With Quote
Old 11-05-2012, 01:37 PM   #2
I'm Your Huckleberry
 
Join Date: Mar 2011
Posts: 5,446
Default

Miswired T-stat or Bad Heater Relay??


What does the heater have, relays or contactors? Post the model number of the air handler and take some pictures of the stat wiring and post them as well.
__________________
Thanks.
Doc Holliday is offline   Reply With Quote
Old 11-05-2012, 01:38 PM   #3
I'm Your Huckleberry
 
Join Date: Mar 2011
Posts: 5,446
Default

Miswired T-stat or Bad Heater Relay??


You have heat sequencers which bring on one strip at a time so as to not trip a breaker but for power to come to those sequencers they need to go through a switch first, contactor or relay.
__________________
Thanks.
Doc Holliday is offline   Reply With Quote
Old 11-05-2012, 01:49 PM   #4
Newbie
 
Join Date: Nov 2012
Location: Central Florida
Posts: 4
Default

Miswired T-stat or Bad Heater Relay??


camera phone stopped working will borrow another and post pics soon I hope..
Ruud Model : UBEA-17J11NFDAI Serial : T M 0698
HTR. K.W.
Total 7.3/9.8
jusmerod is offline   Reply With Quote
Old 11-05-2012, 01:53 PM   #5
I'm Your Huckleberry
 
Join Date: Mar 2011
Posts: 5,446
Default

Miswired T-stat or Bad Heater Relay??


Can you open up the stat and tell me which color wires are on each labeled thermostat terminal? It could be a simple wiring issue, could be a bad thermostat.

What you can do is plug back in the heater wires in the unit, remove the face of the stat and jump a few wires to bring on either cool and /or heat. If with jumping the wires on either call with the heat strips wired in as normal the system works normally then the stat is bad.

You very well could also have power surges in your area which is taking out that defrost board.

Let me know the wires termination, I'll tell you which wires to jump.
__________________
Thanks.

Last edited by Doc Holliday; 11-05-2012 at 02:00 PM.
Doc Holliday is offline   Reply With Quote
Old 11-06-2012, 08:41 PM   #6
Newbie
 
Join Date: Nov 2012
Location: Central Florida
Posts: 4
Default

Miswired T-stat or Bad Heater Relay??


Hi Pal,
thanks 4 your input so far....I am hot a hvac tradesman, so I really do not understand the correlation of wiring color to where ever or not that particular wire ends up where it is supposed to go...but here goes...
I was sort of hoping for someone to tell me if continuity may be checked or 2 of heat coils disconnect at a time to troubleshoot the defective part?/ my suspicions lay with t-stat wiring as the stat worked fine on old unit I replaced and my nephew did not review my diagrams I had sketched of previous connections..just went hogwild and connected saying he has installed literally hundreds...
Attached Thumbnails
Miswired T-stat or Bad Heater Relay??-11-05-12_2131.jpg  
Attached Images
   
jusmerod is offline   Reply With Quote
Old 11-06-2012, 09:25 PM   #7
Member
 
Join Date: May 2010
Location: winnipeg manitoba canada
Posts: 779
Default

Miswired T-stat or Bad Heater Relay??


wow.... that makes me dizzy.....
carmon is offline   Reply With Quote
Old 11-07-2012, 06:51 AM   #8
Newbie
 
Join Date: Nov 2012
Location: Central Florida
Posts: 4
Default

Miswired T-stat or Bad Heater Relay??


Molson Rules....
jusmerod is offline   Reply With Quote
Reply


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
Question on return line for water heater daluu Plumbing 10 09-09-2012 10:38 PM
Natural Gas Heater and Lines Leroy1985 HVAC 14 11-11-2010 10:08 PM
How to flush water heater that has solar panels Homerepairguy Plumbing 2 11-11-2010 08:26 PM
Baseboard heater meltdown... Master Brian Electrical 2 11-07-2010 02:04 PM
LUX digital stat Trane XE80 intermittant problem rossl56 HVAC 6 12-26-2008 05:53 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.