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

    Nov 14, 2007, 05:01 PM
    Thermostat wiring.did I mess up
    I am installing new goodman heat pump... 7 wires... followed directions on the thermostat instructions but had a blue wire left over... so screwed it into the B screw without checking goodman data... unit did not come on... I realize now that blue wire is the common... if I had it wired and powered like this for few minutes... do you think I blew a control board or something... I have an ac installer coming this weekend to finish the install since I am having some medical problems and can't get under house to attach ductwork...

    Alan
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
    Ultra Member
    		  
    #2

    Nov 14, 2007, 05:52 PM
    You should be OK but you may have blown a fuse or transformer if you powered it up with the thermostat set to heat. B on the thermostat is 24v hot all the time in heating mode(made to energise the reversing valve in heat mode). You had 24v common that would make it a direct short.
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!

Thermostat Wiring - From Two to One Thermostat [ 4 Answers ]

Currently my central a/c unit is hooked up to a Honeywell CT3500 Programmable Thermostat. I've noticed that the thermostat can handle heat as well as cooling. My furnace is hooked-up to an older manual thermostat. It is a simple 2 wire set-up - red & white. Could the furnace be hooked-up to the...

Honeywell wiring different from old thermostat wiring [ 2 Answers ]

I purchased a non-programmable digital thermostat to replace an analog thermostat with wiring red, white yellow and black. How do I match the wiring? HELP!!

The wiring is a mess on this old briggs engine [ 1 Answers ]

I bought an old simplicity garden tractor at an auction sale CHEAP! But the wiring is a chaotic mess and the only diagrams I can find are for newer engines. This one is a 1975 Briggs not sure how much HP either, the model # is 302431. I have broken wires coming out of the points system and I have...

Help! Stuck in a mess of bad wiring! [ 12 Answers ]

Hello all, hope you can offer some trade secrets and help me out here... This weekend I helped a friend add a light fixture in his remodeled basement. The project was simple and straightforward (ha ha ha). A hole in the wall exposed a modern 12/2 line feeding an outlet. We removed the...

I'm in a wiring mess [ 4 Answers ]

I am trying to hook up my ac, Make a long story short I had to put in a sub panel to run it, now I have 220v going to the a/c, but the 110v is dead, so I traced it to the 24v/110v thing. Well my problem is I unhooked the wires and forgot what went where. I got the black and white hooked up OK, it's...

View more questions Search