Question about Honeywell Programmable Thermostat Heater

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I have a good heatpump with goodman air handler. the air handler has a sequencer and a blower relay. the blower relay quit working and i replaced it with a supco 90340 relay. the problem now is in the switching. my understanding is the blue and red wires should be piggybacked on on side of the 24v coil and the white on the other side of the coil. if i do that the relay switchs and the blower starts but the compressor does not. Any Ideas?

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Your green wire from the tstat and the low voltage common should land on the relay coil. Your high voltage for the blower lands on normally open. Sounds like you are using your red (constant 24v) to energize your relay. Therefore your relay is constantly energized and your blower runs constantly. Let me know!!

Posted on Jul 01, 2017

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: replacing thermostat

YES THE BLUE WIRE DOES CONNECT TO THE C TERMANAL FOR COMMON

Posted on Sep 12, 2008

machtcl1
  • 61 Answers

SOURCE: blower stays on with new themostat

Check to see if there is a short between the green wire and the red wire. Green is the fan control wire for AC. Sounds like some wires may be touching. How did the old t-stat get fried?

Posted on Jan 02, 2009

  • 1 Answer

SOURCE: honeywell thermostat

I had the same problem and decided to take a chance and call honeywell customer support. I am shocked, they solved my problem! At least in my situation we found that the blue wire ran the compressor. Instead of hooking up to "blue" on the thermostat, we hooked it up to "white." It works wonderfully now.

Posted on Apr 25, 2009

  • 232 Answers

SOURCE: Wiring

red goes to RC and RH, White goes to W, Green goes to G and Blue goes to Y. iam assuming on the old tstat that Red whent to R White went to W Green went to G and Blue went to Y

Posted on Sep 20, 2009

Testimonial: "Thanks! Worked out great!"

  • 233 Answers

SOURCE: Old wiring looks like this

If you have a heat pump, the thermostat that will operate it most generally will have an "O' terminal for the orange wire, this is the circuit that energizes the reversing valve on the heat pump, be sure that the stat says heat pump on the box. hope this helps

Posted on Nov 07, 2009

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Oct 09, 2008 | Goodman Heating & Cooling

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