Having problems with your Air Conditioners ?

A/c help Installed a new 2.0 ton 13 seer condenser and can not get the contactor to ingauge i have 240 on line side and 240 on load side when i push the pins down and the unit starts, i have 24v at the t-stat going in the contactor but it will not close, and i switched it out and the same thing happens, i checked the transformer and t-stat and all checks out good. why is the contactor not closing when it is calling for it?


Answers :

Do you have 24volts at the contactor when the T-stat. is set to cool or heat if unit is a heat pump? The outside unit must have 24v at the contactor to engage

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A/c help Installed a new 2.0 ton 13 seer condenser and can not get the contactor to ingauge i have 240 on line side and 240 on load side when i push the pins down and the unit starts, i have 24v at the t-stat going in the contactor but it will not close, and i switched it out and the same thing happens, i checked the transformer and t-stat and all checks out good. why is the contactor not closing when it is calling for it?


Do you have 24volts at the contactor when the T-stat. is set to cool or heat if unit is a heat pump? The outside unit must have 24v at the contactor to engage ... Hitachi RAS-09UH Air Conditioner

On my goodman ssz160481ab heat pump. When going into either heat or cool mode the contactor won't hold. its as if the coil voltage is going on and of very fast causing the contacts to burn out. I replaced the contactor beacause it was so badly burned and found that the thermostat was bad too and replaced it. However it is still doing the same thing. I am getting a full 28v from the transformer, but get a weird reading at the contactor coil, 18vac and 8 v dc. could it be a bad circuit board?


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On evcon split system the wireing digram shows low voltage therm wires going to the same side on contactor. i thought the red came off the right side and the black came off the left?


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The ptac unit is not heating or cooling the aux heat works the line out of the compressor gets hot but the line going to the coils up front does not get real hot just warm and does the same thing on the cooling side does get cold can not figure it out can anybody help


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Shut unit down for cleaning, outside unit will not start now, I have line voltage at the contactor but the contactor will not engage.one wire from the thermostat runs to a little black box next to the contactor (white) the red one runs to a device down by the dryer on one side and back to the black box on the other side. Both of these wires come out of the box and attach to either side of the contactor.Could this piece be the problem or is it the black box.If I manually engage the contactor the


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How to change 3 wire motor with 4 wire motor for outside ac unit fan motor?....old motor had blk wire going to a circuit board, also pur wire going to c terminal on cap, also brw wire going to f terminal on cap...... new motor , on the name plate , shows blk and wht wire going to line. also brw and brw/white stripe wires going to cap.... does the blk go to the same place as the old blk and the white does it go to the other line wire coming off the contactor? also which terminals do i attach t


You need this wire onto the "F"terminal- fan terminal as this is a 230 volt condenser fan motor all your doing is parrelling the cap ... Air Conditioners

I need to know the same thing as asked by Alan in Aug. I have a coleman thermostate 6703-340 and need to know which three wires go to which 3 termimals.Thank-you, Frank


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My ac unit does not have power to the thermostat. There is 200 volts going into the transformer and 24 volts going out. There is 24 volts on the back side of a terminal with thermostat wire running to the thermostat and the outside AC unit. However, no power on the front side of this terminal and therefor no power to the thermostat.


Please exercise due caution in checking voltages in live circuits!24 volts sourced by the transformer, through the thermostat, then through the contactor (turns on power to compressor/fan) and returns to the transformer, If the thermostat ... Air Conditioners

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CONTACTOR WIRING IAM REPLACING THE SAME CONTACTOR AS YOU HOWEVER, I'M REPLACING CONTACTOR WITH FASCO H140A AND AM NOT SURE WHERE THE L1 T1 SHOULD GO BECAUSE THERE ARE TWO PRONGS ONE ON LEFT AND ONE ON RIGHT. ANY CLUES YOU CAN SHARE?


Sorry but I could not find a picture of a Fasco h140a but L's are connected to line (supply) voltage and T's are connected to load (motor). C's are connected to your control voltage, usually the smaller sized wire. ... Ruud Central System Air Conditioner

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My thermastate went out and i cant hook up the new one because it is not labled, and i need to know how i figure out what wires need to go to with letters (o/b, y, r, g, w). There is a plug with 10 wires ( there are colored ) that goes from the a/c unit to the thermostate, and seperate red and wite wires going to the thermostate. Also there was 12v power going to the other thermostat. The only thing the new thermostat has for hookups is o/b, y, r, g, w. can you help


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Look on the side of the motor it will have a wiring diagram your fan supplies voltage to the capacitor its self so two of your wires go to the capacitor not just one. good luck ... Air Conditioners

Upne-024jaz unit burnt contactor found comp. shorted replaced . vac. and charged unit found cap. tube broke at coil on cond. tvx repaired and recharged unit , found suction side pulling into vac. replaced tvx and recharged unit still pulling into vac. on low side and high side set app. 180 and doesn't move as unit runs. assume tvx at coil or rev. vale ?


There is lack of airflow across the coil due to not being CLEAN. Perhaps a dirty return air filter. Could even be slightly undercharged. Either way, the evaporator is operating below the freezing point of the atmospheric humidity.F ... Ruud UAPA024 Air Conditioner

Hvac i have a 2 ton goodman package unit. the ac side works great the heat side not so good.man lol. it cycles on the gas is ignited and runs for 5 to 10 seconds and flame goes out. it will do this three or for times and then the blower shuts off. if i take out the quick disconnect and put it back in it does the same thing over again. i replaced the flame rollout switch now it lasts a little longer 10 to 15 seconds but still ending with the same results... please help


Dirty flame sensor ... Goodman Air Conditioners

High side pressure going up and down from 300 to 400. No exspansion valves on unit. What's going on ?


Possible over charge or air flow problems through condenser ... Air Conditioners

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