Ask Experts Questions for FREE Help !
Ask
    Alex49's Avatar
    Alex49 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jan 30, 2013, 09:05 PM
    How to install 4 wire from a 5 wire thermostat
    Have 5 wires with #'s label, 2 green #2&3, 2 red#1&4 and one white #5 wire. Both unit old and new replacement are Honeywell. The newer one ask for 4 wires. The wire got mix up so we were lost and may not connected right. It does not work. What is problem and how can we fix the problem. One red #1 was connected for sure to Y on the old panel and we connected to Y on the new panel. And the white #5was connected to the W to the new panel (not sure if it was connected to the W, it may have been on the C of the old panel) And the 2 green wires we are not sure which # was where. We connect each one to G, It work then was disconnect for the white to be put on White. Thinking at the time that the white wire was C and not needed. What can we do.
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
    Ultra Member
    		  
    #2

    Feb 1, 2013, 05:27 PM
    Your best bet is to check at the furnace to see if the wires are labeled & to which terminals they are connected. If there are no labels, go to your local home center, buy some 5 wire thermostat wire, run the new wire, & connect to the furnace & stat.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

3 Wire Thermostat Install? [ 4 Answers ]

Hi All, I'm trying to replace my old mercury thermostat (from 1979 it seems) with a new 4+1+1 thermostat. I took off the old 'stat and I had 3 wires connected to it brown, green(maybe grey), and black. The brown and green wires were connected to the same terminal while the black one was...

2 wire heat thermostat and 2 wire air thermostat want to wire to a programmable [ 1 Answers ]

2 wire heat thermostat and 2 wire air thermostat want to wire both to a programmable thermostat, need wiring information

3 Wire Thermostat Install [ 1 Answers ]

Hi, I'm trying to replace an old mercury thermostat with a programmable digital one. It is for a cooling only system. It has three wires, black, blue and white. I have connected them the way they were connected before, White to RC, Black to Y, and Blue to G. The system turns on, but it won't...

How to install 2-wire thermostat [ 1 Answers ]

We had an old (1950's) manual thermostat. Upgrading to a Honeywell rth7000 programmable thermostat. We have oil heat only. I have two quesitons; 1) Am I correct in assuming that we connect one wire to R (is it R or RC, I think we have both) and one to W? 2) Will this allow the programmable...

Thermostat install and wire fell off [ 1 Answers ]

I attempted to install a programmable thermostat today. I got the old one off and the red wire that was supposed to be RH (mine had a #4) fell off. Before I messed with it it looked like the RC and RH were connected somehow. So I installed the system as if it were a 4 wire system leaving the...

View more questions Search