Compressor failed and was replaced by technician. He now says the evaporator is clogged and will have to be replaced. Will I continue to have problems after this next part replacement since the sealed unit was opened for repairs?

1. Refrigerant charge: If the refrigerant charge is too low, the evaporator coil will not absorb heat effectively, causing the coil to freeze.
2. Airflow: If airflow across the evaporator coil is restricted, the coil will freeze. This could be caused by dirty air filters, clogged condenser coils, or fan failure.
3. Defrost system: If the defrost system is not functioning properly, the evaporator coil may freeze. This could be due to a faulty defrost timer, a defective defrost thermostat, or a clogged drain line.
4. Compressor: If the compressor is not running properly, it may not be able to pump refrigerant through the evaporator coil, causing the coil to freeze.

To troubleshoot a frozen evaporator coil, you should start by checking the refrigerant charge and verifying that the unit has proper airflow. If the refrigerant charge is low, you should have it recharged by a licensed HVAC technician. If the airflow is restricted, clean the air filters and check the condenser coils for any blockages. If the defrost system is not working properly, replace the defrost timer or thermostat, and clean the drain line. If the compressor is not running, it may need to be replaced

what does the frost pattern look like on the evaporator? Is top of the compressor too hot to keep your hand there?
APPLIANCE 911

It doesn't defrost

1. Defrost control board

If the defrost function is not working on your refrigerator it could be an issue with the defrost control board. This control board oversees several internal conditions and regulates the activation of the defrost cycle. A faulty board can be the primary reason your refrigeration unit is not transitioning to the defrost cycle. Over time, the buildup of ice on the evaporator coil will prevent the refrigerator and freezer from maintaining proper internal temperature. It is advisable to first check the defrost heater and the defrost thermostat for continuity prior to replacing the defrost control board.

1. Main control board

A possible cause for a refrigerator not defrosting, especially on more modern units, is the main control board. The main control board acts as a "brain" for the unit controlling the defrost cycle, compressor, and run time, and essentially acts in place of the defrost timer. The control board can be tested using an ohm meter for functionality and will need to be replaced if bad.

1. Defrost timer

If the refrigerator is not defrosting the timer could be malfunctioning. Numerous times throughout the day the defrost timer should cycle the defrost heater on as a means to melt frost buildup on the evaporator coils in the freezer. If this timer does not cycle on, then it may be faulty and require replacement.

1. Defrost heater assembly

If your refrigerator is not defrosting accurately this could be an indication that your defrost heater assembly has failed. This could cause the frost to accrue on the evaporator coils, eventually blocking the airflow resulting in the unit not cooling properly. The defrost heater assembly can be monitored for continuity using an ohm meter and will need to replaced if there is none present.

1. Defrost thermostat

Another cause of your refrigerator not defrosting is a faulty defrost thermostat. A requirement for the defrost heater to activate to melt away frost on the evaporator coils is a functional defrost thermostat. The defrost thermostat senses the temperature of the evaporator coils and initiates the thawing process by activating the defrost heater. If the thermostat is faulty, it will not sense the lowering temperature of the coils and will not turn on the heater, resulting in an advanced frost build-up. The defrost thermostat can be checked for continuity by using an ohm meter; if there is no continuity the damaged part will need to be replaced.

1. Defrost sensor with fuse

Another possible cause of a refrigerator that does not defrost properly is a defrost sensor with a fuse. If the defrost sensor fails, the fuse acts as a one-time-only fail safe for the sensor -- if the sensor does not shut off the defrost heater, the fuse will blow when the set temperature is reached. This safety precaution is to keep excessive harm from your unit by the heater and is a one-time use, resulting in the replacement of the entire defrost sensor.
Defrost drain problems

1. Clogged or freezing defrost drain

If you are experiencing defrost drain issues, it is possibly due to a clogged or freezing drain that is blocking water flow to the bottom of the freezer. This will cause the defrost water to drain and drip down to the bottom of the freezer section. To correct this issue, thaw any ice or remove debris that could be causing the clogged drain or replace the drain heater.

1. Drain heater

If you are experiencing defrost drain problems, inspect the defrost drain heater. A dislocated or burnt out drain heater will result in the drain tube freezing over. Attempt to return the part to the designated position or replace the damaged part to correct the issue. Search Over 2 1 Million Appliance Parts

your getting ripped off try the defrost timer sounds like it is getting stuck, it operates on a 24 hour basis cycling between defrost, and turning compressor on and fan to cool the fridge

You AC compressor is failing, the debris are plugging the tube, replace the compressor receiver dryer and have the system flushed out professionally.

Hello,
A portable air conditioner may not cool for several reasons. Check the filter by removing the unit's grill and clean the filter.
Also check for clogs in the evaporator or condenser coils by light vacuuming. Make sure the evaporator isn't frosted over, but if it is, allow it to defrost and normal operation should resume.
Lastly, ensure the ambient temperature is lower than your AC's set temperature, as this can prevent cooling. However, if all of these steps fail to resolve your problem, the compressor may be malfunctioning, and in this case, the compressor needs to be replaced or repaired.
In summary, if the air won't cool, remove the grill and clean the filter. Clean out any clogs in the evaporator or condenser coils by vacuuming them and scrubbing them lightly with an old toothbrush. And since fan is working, you compressor might be defective.
I hope the above information is clear.
Regards.

Hi!!

It could be a few things that make the compressor overheat, when this happens, the bimetal thermal protector shuts it off to avoid damage to the unit.

Some of the reasons could be:
Dirty condenser and/or evaporator (if condenser is dirty or clogged up, the heat absorbed by the evaporator will not be dissipated, this will cause the compressor to overheat.)
Bad fan motor.(not blowing enough air to cool down condenser).
Bad capacitor (only if compressor fails to start right up or not at all.)
Worn coils inside compressor.
System clogged or dirty. (If the system is dirty or clogged up, the compressor's workload increases causing it to overheat.

Don't forget to rate this post, Good Luck!!

The evaporator (inside) coil can ice up for the following (typical) reasons. Check the ones that you can and hire a professional refrigeration technician if you can't find the problem yourself.

1. Thermostat isn't shutting off. (Does the compressor run continuously? Can you turn the compressor off while it is running by turning the freezer temp control down (but not off)?

2. Internal fan (evaporator fan) is not blowing air. Possible causes: fan blades hitting something; debris blocking air flow; fan motor bad; no power to fan.

3. Low refrigerant (freon) charge. Need a technician for this one.

You can get thermostat or fan motor at a local appliance parts store. Try googling "appliance parts <yourzipcodey>"

If this was helpful, please select YES to the first two RATINGS questions. Good Luck!

hi..
The evaporator coils on the front of the air conditioner get very cold during normal operation of the air conditioner. As the warm moist air in the room comes in contact with the cold evaporator the moisture in the air condenses out of the air and attaches to the evaporator coil. As more and more moisture condenses the water begins to drip down into the base of the air conditioner where it is evaporated to the outside of the house.... so the problem might be in ur evaporator coil.. try replacing the coil if u are an expert or else with the help of technician try to fix it..
Is the thermostat knob turned to the proper setting? Is the compressor motor running? The compressor is a football-sized case with no apparent moving parts. It is located inside the air conditioner at the center. Is it humming or making any kind of continuous noise or causing the lights to dim? If it is making a continuous noise, and your air conditioner is still not cooling at all, there may be a serious problem with one or more of these areas:
Compressor
Condenser
Evaporator
These items are not user serviceable. You will need to contact a qualified appliance repair technician to repair these components.

If the compressor is not running but you do have power to the air conditioner there may be a problem in one or more of these areas:

Compressor
Overload and/or relay
Thermostat (Open thermostat)
Burnt wiring
Bad selector switch
Capacitor..