JUST GO A NEW COMPRESSOR FAN. THIS IS THE THIRD ONE. CONNECTED IT AND IT STARTED TURNING. INTALLED THE FAN, IT NEVER STARTED. PULLED IT OUT AGAIN, LEFT IT CONNECTED FOR A WHILE, CAME BACK AND IT WAS RUNNING. SIDE NOTE: THE FRONT TEMPERATURE DISPLAY HAS BEEN WORKING/NOT WORKING FOR SOMETIME NOW. LOUD NOISE FROM BACK MADE ME CHECK THE FAN. WHEN THE FAN WAS RUNNING I CHECKED THE TEMP DISPLAY AND IT WAS ON SHOWING FRIDGE TEMP OF 32 (SET TEMP 37). PROCEEDED TO REINSTALL FAN. ONCE REINSTALLED STOPPED RUNNING AND TEMP DISPLAY WAS OUT AGAIN. WHATS GOING ON WITH THIS THING.
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no it requires full 12 volts to work the clutch the coolant fans have no connection to the ac system so they will not run until the engine temp requires them to
there is a fan normally in front of the condenser coil that will start as soon as the ac compressor gets power
the ac will not work until there is sufficient charge in the system to activate the low pressure switch
have to ask are you using the right gas as 134A requires all new system( evaporator , condenser , compressor , hoses) as the pressures are very much higher than r12 gas
By fan woks you mean inside unit right? assuming so, check remote control settings and battery, set temp.to 70 degrees, a light should come on at the display and seconds later, the compressor should kick in. If Unit is brand new, it should be it. If split units, try another remote, some times those remotes show the display but do not send signal strong enough that the unit can receive it. Try getting closer to the unit.
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the compressor may be low on freopn but, the fan problem is most likely the fan motor as it is the low temp fan and will run more often than both fans...to test see if you can switch the fan plugin to the other fan watch carefully that it does not get too hot as the second fan is a safety fan that works as high temp or when using the A\C
I would check to make sure that the control is sending the "cool" signal to the control unit. LO on the room temp display usually means that the fan speed is set to low. Is LO and Auto showing on the display at the same time. Try resetting the thermostat first. Hold down the Mode and Zone buttons with the tstat off. While holding them down, turn the tstat back on and hold the buttons down until FF appears on the screen. Release the buttons and try the AC. If this does not work, on the control board is a freeze control switch plug (blue usually). Try unplugging this unit and insert a small jumper wire. If the Compressor comes on and runs then you have a bad freeze control switch. If not, then you should replace the control board.
The two terminal cap is only for the new fan motor. Connect the compressor wire back where you found it, on the 3 terminal cap. It's the terminal marked, "herm". The "common" terminal on the 3 terminal cap must still be connected to one side of the 220 power at the contactor. One side of the 220 goes to the common on the compressor. The other side of the 220 goes to the run winding on the compressor AND the common terminal on the 3 terminal capacitor.