Top 20 Carrier 38CKC036 Air Conditioner Questions & Answers

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

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

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

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.

duct work problems ,coil dirty, fan capacitor.

The serial number is needed to answer this question

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)

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

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

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.

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

Plugged filter...plugged indoor coil.

your furnace uses 115 power & there is a transformer in this unit that powers the low voltage controls. i would say that when they replaced the board they missed some issues with the low voltage control wires. which is likely to be what cause the board to go bad. theses low voltage wires are the only thing that can tell the outside unit to come on. the lights dimming tells me that you have a bad capacitor or need a hard start kit. the lights normally only dim if the compressor doesnt start.

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

Capacitor or compressor

Air mover is too close to the vents - the ductwork (re-routed 180 and back) must be modified or lined inside with a sound absorbing material.

check for Freon level if its low compressor will not run

Hi Mate,Just wondering if you have refrigerant currently in the system? It looks like it is to be charged with puron refrigerant which is the trade mark name for R410A.