DIY Home Improvement, Remodeling & Repair Forum > Appliances > HVAC > Thermostat Installation

Thread Tools Search this Thread Display Modes
Old 01-20-2007, 09:44 PM  
Junior Member
Join Date: Jan 2007
Posts: 4
Default Thermostat Installation

I bought a new digital thermostat at lowes to replace my current Trane mechanical thermostat. I thought it would be quick install, but I have wiring problem. The current thermostat has 8 wires hooked to it from the wiring out of the wall. The new thermostat only has enough terminals for a 4 or 5 wire connection. Do I need the extra wires? Do I need to purchase a new T-stat with a 8 wire connection? Can i just connect the 5 wires and forget about the rest? Any suggestions would be greatly appreciated.

jeff7 is offline  
Reply With Quote
Old 01-21-2007, 09:28 AM  
Senior Member
Join Date: Apr 2006
Posts: 114

More info needed to give proper advice.
what is the make and model of the old T-stat
what type of heat/cool system,(forced air gas or oil,heat pump, hot water, electric)???)
what make ,model is the new T-stat.
Post back with this info and you may get some definite advice.
Thank you.

Hube is offline  
Reply With Quote
Old 01-22-2007, 09:21 AM  
Junior Member
Join Date: Jan 2007
Posts: 4

The make and model of the old t-stat is Trane Weatherton
Hear pump system - Trane Weatherton High Efficiency Heat Pump XE 1100
New T-stat Hunter Just Right Model # 42999
Hope someone can help me out.....
jeff7 is offline  
Reply With Quote
Old 01-22-2007, 10:31 AM  
Senior Member
Join Date: Mar 2006
Posts: 2,990
Liked 4 Times on 4 Posts

Send a message via AIM to glennjanie

Hello Jeff:
Your heat pump requires lines for the reversing valve which changes from heat to cool. It also probably has a supplemental electric heater and an emergency heater. If your new t-stat doesn't provide for those functions you will have trouble.
I would recommend going back to the Trane dealer and asking him for an up dated thermostat that will answer to the things you desire.
glennjanie is offline  
Reply With Quote

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

Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Thermostat or furnace problem? dakuda HVAC 8 01-02-2010 04:05 PM
Electric Heat Pump & Programmable Thermostat John Greeb HVAC 2 01-09-2009 10:01 PM
Having trouble wiring thermostat swinny Electrical and Wiring 2 11-29-2006 10:08 PM
One thermostat works, the other doesn't churley702 HVAC 1 11-22-2006 09:27 AM
Replacement Room Thermostat billsack Plumbing Forum 2 10-04-2006 04:01 PM