20 Most Recent Carrier 38CKC030 Air Conditioner Questions & Answers

You either have a refrigerant leak or a dirty inside coil or a slow running inside blower motor.
Set the thermostat for heat and run it until all the ice is thawed. Then check the incoming air side of the coil for lint and dirt. Check the fan motor for proper speed. If you have service gauges your low side pressure should be approximately 68 psi. If lower you have a leak.

Change the fan .

Check power supply is going to PCB. If yes, repair or replace PCB

there is a leak and need to fix it before you can charge it

Hello, the evaporator will freeze from either low airflow or a low refrigerant charge. Check the air filter, blower whell to make sure it is clean and air is movimg freely. If the unit is clean and filter is clean then the unit is low on refrigerant due to a leak and will need to be rechaged.

Yes let the ice melt on the evap coil and the outside line. You either have a low charge or you might check your filter dryer on the outside lines this could be stopped up. you will will have a temp drop across the filter if it is stopped up. If not it is possible to be low on charge. Is the inside fan turning and turning the right direction. If the inside fan is not turning it will cause the evap coil to freeze up.

Normal. High humidity and warm days will cause this You can wash it off it will make you feel better. but don't worry about it . Hope this helps Jon

you are right replace the compressor/fan capacitor this helps compressor/ fan start its the round silver or oval part in the condensor ..let me know ..good luck/joe/

Hi!!

Replace motor fan and capacitor, it is a very simple task. Turn breaker OFF. Then all you have to do is remove about four screws from the top grill, about four more that fasten the motor fan assembly, unplugg electrical connectors and label them and install the new one and switch fan blades.

No special knowledge is required to perform this job. Cost: about $140 +-.

On the other hand, you call a HVAC technician, they supply the motor and capacitor, otherwise they won't give you warranty. Cost $300+. Look on the Yellow Pages for one in your neighborhood.

Good Luck!! Rate this post!!

You currently own a 2.5 ton AC Unit
500 square feet equals a ton of cooling/ you need a 3.5 ton unit.
If your home is well insulated, good windows and doors and pretty good
shade that covers your house, then I can see a 3ton unit cooling your
house.

Thats another 6,000 btus you do not have and that is a best case for a
energy effcient home.

Check the contactor........it is possible the contacts are wearing..........the contactor is considered a wear-n-tear item.

Hi,
There can be a couple of things that could be happening...
The first and easiest thing is to check the air filter. Make sure that it is clean... clean it or replace it. Next check the air vents to make sure that they are open and giving you good air flow...
Also check to make sure that you are not icing up on the indoor coil... ice will tell you that you are low on refrigerant. You also could be low and not be icing over, but you would need to have gauges on the unit to check that.
Finally check and clean the outdoor coil...this also can give you problems if the heat is not being removed from the outdoor unit efficiently...
You may also have a unit that is sized in such a way that it hits the balance point at about 85...that means that your heat gain is equal to the capacity of the unit...I often try to size them for about that here in Northern PA. because wqhen seldom get hotter then that and the unit then is much more effective at removeing humidity at lower temperatures...

You can also check out the tips that I have wrote about Air conditioning trouble shooting and maintenance...

Here is one about cleaning the condenser coil and at the bottom of that one are links to others..

Condenser Coil Cleaning Condenser Coil Cleaner

http://www.fixya.com/support/r3850183-condenser_coil_cleaning_condenser_coil

heatman101

if it has no batt I would ck transformer for 24to26 volts no voltage replece transformer be sure trans has 115 volts to it trans should be in furnace section

does the indoor fan blow? If it does you are getting the 24 volts from the thermostat to the ouside contactor need to check your contactor in the oustide unit this is what kicks on the compressor it take the 24 volts and goes to 230 volts to run the compressor and condensor fan. check your schematic for the placement of the contactor.

First thing, are the filters clean? If so then you have lost some gas from the system and need to find and repair the leak, and put in correct gas charge.