Question about Intertherm P3RA-048K Air Conditioner

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T stat wiring to a/c unit

Returned home to find the wiring to the tstat was lying on the ground with no matching wires fron the unit. Took the electrical cover off and no wire. Where does the wiring connect to the unit?

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One wire to each side of the contactor.

Posted on Sep 24, 2008

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I installed a goodman 5 ton heat cool unit and a 5 wire battery operated tstat, the unit is 2 stage will it work with this tstat cant get anything to work even jumping the tstat


See if there is 124 VAC across the common and the red wire. If not then the thermostat transformer inside the unit will have to be replaced or the fuse changed if it has one(not likely).All t/stats are not the same. If your T/stat doesn't have a provision for the 2nd stage or emergency heat then you have the wrong T/stat That will definitely blow the transformer that supplies 24 vac to the control relays

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Carrier OEM to Honeywell Programmable Tstat - NEED HELP


you likely have a "two stage" system, but not a two stage heat pump. the first stage is probably the heat pump itself, and the second stage is the auxilliary resistance heat that suppliments the heat pump at lower temps. if i knew the terminals that are available on the new stat, i could advise you on the proper wiring.

Jan 27, 2013 | Carrier Heating & Cooling

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Cozy heater will not fire, replaced powerpile but gas valve will not open Jumped tstat also


pull stat wires off of valve and put a jumper wire across the 2 TH terminals on the valve, if it comes on could be the stat wire run a peice of stat wire from unit to stat to test.

Oct 22, 2010 | Cozy (W352E) Heater

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From the Isolator panel, how do I connect the condenser, and the blower?


MOST UNITS NOT HEAT PUMPS  WIRE UP WITH 2 WIRES TO CONDENSER RED WIRE AND WHITE . WHITE GOES TO COMMON C ON FURNACE AND RED TO Y TERMINAL OF FURNACE Y ALSO GOES TO Y ON TSTAT. BOTH YELLOW WIRES MUST MEET AT Y OF FURNACE.  WHITE FROM STAT TO W   GREEN FROM TSTAT TO G AT FURNACE IF YOU HAVE C ON TSTAT HOOK UP BROWN WIRE OR BLUE FROM COMMON TERMINAL WHERE YOU HOOKED UP CONDENSER WHITE WIRE AT FURNACE TO TSTAT , MOST THERMOSTATS DONT NEED C RUN FROM FURNACE. THE TWO WIRES GOING TO CONDENSER IS -  AND + TO ACTAVATE CONTACTOR IN OUTSIDE UNIT

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The heat keeps going on and does not stop at the programed temp


TAKE APART TSTAT IF U HAV ALL WIRES SEPERATED AND IT STILL RUNS ITS NOT THE STAT THEN U TAKE APART STAT WIRES AT UNIT IF THAT SOLVES IT THEN UR HOT AND HEAT STAT WIRE ARE SHORTING TOGETHER AND U NEED TO PULL NEW WIRE IF IT STILL RUNS WHEN WIRES ARE PULLED ATN UNET THEN U MIGHT HAV A BAD VALVE HOPE THIS HELPS U

Dec 27, 2009 | Honeywell CT87B ROUND HEATING&COOLING...

1 Answer

My Goodman Manufacturing AC unit won't turn off when it has reached the correct temp. It just keeps getting colder and colder. This is also with a new properly functioning thermostat.


You may have your Tstat wired wrong I run into this problem when somebody tries to install there own Tstat. Sometimes where they buy them does not give them enough info. Disconnect the Y and the g lead off stat and see if unit stops. If so the problem is the tstat. Most of the time the customer is given the wrong info by the saleman. Remember these guys at home Depot or Lowes dont know jack about Air Conditioning. A lot of the time they do give people the wrong tstat. Rus

Jul 04, 2009 | Heating & Cooling

1 Answer

Wiring match-up


If this is a standard heat cool unit. You have a tstat with rygwcob. Just color code the wire to the unit. Some air handlers such as Rheem and carrier use different collors for there common Carrier black Rheem or Rudd Brown. Two wires that go outside use yellow blue. Yellow to Y fron Tsta and blue to common or blue,blavk or brown.or C

May 30, 2009 | Heating & Cooling

2 Answers

Ruud heat pump


Did you just install this heat pump? If so it sounds like you replace a regular a/c with a heat pump, which will require more wires for the reversing valve. First check to make sure you have 24v going to the condenser. Make sure you have a heat pump t-stat. You should have a orange t-stat wire for your reversing valve. At the t-stat you will have terminals R, Y, G, O, X or C or B, W1, and W2. R is half of your 24v circuit and is a red wire, Y is for cooling mode, G is the Fan green wire, O is for the reversing valve, orange wire, X or C or B is the other half of control circuit blue wire, W1 and W2 is the heat strips in the furnace tan and black wires. These are standard color code but remember electricity does not know colors and an installer may have used different colors. If all of this is correct possibly bad contactor.

Oct 30, 2008 | Ruud UAMB Air Conditioner

3 Answers

How to wire 1 plf 1504d heater


I have the solution, finally after looking for 2 days.

First off, I couldn't quite put it all together based on what I was reading. I finally tracked down the Fahrenheat web site (www.fahrenheatpro.com). And called tech support (800) 452-4179.

To wire 2 BB units to 1 tstat.

1. Use #14 wire for 0-12 amps, #12 wire for 12.1 to 16 amps and #10 wire for 16.1 to 24 amps.

2. I have a 12/2 wire going from the tstat to BB#1 and another 12/2 wire going from BB1 to BB2.

3. Onthe left side of the heater, you will have 2 sets of black wires tied together with a nut (on right side it's 2 sets of Black/Red wires). You can use either side of the heater. For the purpose of explaining this, lets use the left side, 2 sets of black wires.

4. Undo one of the sets of black wires (it doesn't matter witch), the other set will be left alone.

5. Take the black wire coming from the tstat and tie it into one of the black wires from the heater and the black wire going to the second BB unit. So you will have those 3 wires tied together with a nut at the 1st BB unit.

6. Take the white wire coming from the tstat and tie it into the other black wire from the heater and the white wire going to the other BB heater. Again, you will have 3 wire tied together here.

7. At the second BB unit, tie the black wire coming from the 1st unit to one of the black wires in one of those 2 sets of black wires. Again, only undo 1 set of wires at the 2nd unit, leave the other one alone. Tie the white wire coming from the 1st unit to the other black wire.

8. Make sure ground wire in grounded at the tstat and at both BB units.

Hope this helps...... If I was less clear than I hoped, call tech support and they will walk you thru it....

Kevin.

Dec 08, 2007 | Fahrenheat Electric Convector Baseboard...

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