Carrier 38CKC036 Air Conditioner - Answered Questions & Fixed issues

Can you give me an idea what code 34 represents?

WHAT SIZE FUSE ARE YOU USEING IN YOUR HOME IT COULD BE THAT YOU ARE CONNECTING TOO MANY UNITS AND MAYBE YOUR FUSE CAN'T HANDLE THE LOAD.

Sounds like whoever did the txv, changed the fan speed. Yes, the fan speed is adjustable. Some HVAC units can have up to 4 speeds on the motor. Low, Med Low, Med Hi, and Hi. this is so the same unit can be used for several different cooling coils and tonage. The faster the speed in the cooling mode, the less cool the air will be.

probably has lost the balance tab from the blower wheel . the fix will be a new wheel that is properly balanced

contactor not pulled in. or no 240 line voltage. the humming is the 24 volts enegizing coil on contactor.

duct work problems ,coil dirty, fan capacitor.

No that is not the solution, it the capacitor were bad, then it wouldn't start manually.

You need to be looking elsewhere. The problem may be in the refrigerant level. Those units are supposed to have pressure switches.

Check elsewhere such as pressure switches and make sure the thermostat is working properly.

Go to the thermostat and jump out R to Y. If the unit comes on, your thermostat is the problem.

Very possible the long bladed fan is stuck. Possibly when filters were cleaned and replaced, a part is touching the blade. Remov filters and turn blade by hand. Does it move freely.(make sure unit is off when turning the blade.

Noise is produced by the fan and the compressor. If it's always made this noise then it's OK. Capacitor simply gives the fan and compressor a high voltage impulse to start them. Has it always made this noise? Something inside could have shaken lose, the fan is unbalanced, etc.

Capacitors are rated uf and voltage (35uf 5uf 370 volt) should be right for your unit but the size will be on the old capacitor.

The serial number is needed to answer this question

description: cooling fail action is activated. Action: check compressor operation. turn off main power-restart the unit. see more: Air Conditioning Fault Codes

Will the indoor unit run with the Thermostat fan switch set on auto? I need to confirm that the indoor unit runs first.

You need a megohmeter to test the line voltage wiring AND the compressor.

Does it have a low pressure switch. It sounds like it is a pressure switch issue

Check the capacitor, if it is bulged out it is obviously bad, but I have replaced many that were hard to see whether the top was bulged out or not. If you take the access panel off (should be in the same area as the contactor you were manually pushing in) you should be able to see it. I have only had luck buying them at my HVAC supply houses (usually under $10) You need to make sure to get one that has the same MF as the existing one, if you take it with you someone should be able to match it. Be sure to discharge the capacitor of any stored electricity before disconnecting it (I would recommend calling in a professional HVAC tech if you are unfamiliar or uncomfortable at all with this procedure)

E2 code is 24 volts loss. Check transformer and control voltage should be 24 volts.

Plugged filter...plugged indoor coil.

Capacitor or compressor

The relay to the compressor is stuck. You need a new relay