It appears that the overload keeps tripping on the compressor
Fan runs, condenser coils vaccumed (they were pretty dirty), evap coils not iced up, how long does it take to reset the overload? I can here it clicking...
I would imagine this is something we do not want to bypass.
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Re: It appears that the overload keeps tripping on the...
Almost certainly the compressor sounds to be faulty. That alarm is possibly the warning that the temp. is not correst. I would switch the system off for approx. 1 hour then retry. if it starts to clck again then it proves the compressor is faulty.
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If compressor is running check and make sure your cond. fan and evap fan are running. Also check in freezer and make sure evap. coil is not covered in ice. Also clean your condenser coil. You could be low on refrigerant. There are quite a few things to check.
sounds like the compressor is not running. The condenser fans are located at the compressor. The fans in the conditioned space are the evap fans. A refrig usually does not have any device controlling the evap fans, they are to run 24/7. Freezers have other controls. Start there and let me know if I can help further.
Could be several issues causing this problem. Let's start with some basic observations.
Is the condenser fan running?
Is the condenser coil dirty? (Not only the outside but all the way through the coil. Check by looking for light coming through coil. You can even try shining a flashlight through the coil to see if it is clean.)
If the fan is running and the coil is not plugged up or covered with dirt, or other obstructions (air is freely able to move through the coil), then it could be an issue with the system being over charged.
Another possibility (but not highly likely) is there may be non-condensables in the refrigerant system. Usually these will only be present if the system was recently serviced or charged and air and moisture was allowed to enter the refrigerant system (piping).
More information is required to try and diagnose this further.
This is often found in small compressors when they heat up too much or too often. check to be sure the condenser coil is clear and has good airflow. If so and it still trips on overload then the compressor is bad. Hope this helps. Good luck.
Which motor is hot...compressor or fan?
Also need to know the model number.
Is this a 3-phase or single-phase unit?
Let's assume it is the compressor...Is it so hot that you can't touch it for more than a second or two? Is the compressor shutting down on internal thermal overload?
Compressor body hot can be caused by a number of things:
1. Low charge (the freon acts as a coolant for the compressor).
2. Electrical imbalance (3-phase only). (check line-to-line voltages)
3. Bearings in compressor failing (check amp draw).
4. Condenser dirty or airflow blocked in some way.
5. Condenser fan(s) not running or running backwards.
6. If water cooled condenser then water flow problem.
Hope this helps you get started.
If this helps you, please select YES to the first two ratings questions. Thank you, and Good Luck.
Your condenser coils were probably very dirty and covered with dust, which TRAPS heat and does not allow your unit to get rid of its heat - this causes the compressor to run excessively. Did he also check door seal gaskets and over frost on the evap (defrost issues)? Did he take measures on the compressor as well ?
What a rip-off - cleaning condenser coils is something you can do yourself with a special brush - you should have spent this money on having him check other problems.
Reasons for icing up are dirty filters,dirty indoor evap coil or low on refrigerant. Check these. Your compressor is probably overheated. Let it go for a couple of hours if you are in a hurry. Run a water hose over it. Rus
The small copper line should not be really hot its supposed to be carrying liquid refrigerant which has already had the heat "pressed" out of it by the compressor and carried of by the air flowing over the condenser coil. This could indicate a few things; that your unit is overcharged, you have a mismatched evaporator coil and condenser, an ineffective condenser fan motor or a clogged condenser coil and as a result your compressor is shutting of due to an overload condition from the building heat and back pressure between the compressor outlet and the evaporator inlet.
First make sure your condenser is clean and that adequate air is flowing over the fins of the condenser coil. Then be sure your equipment is a matched system. A indication that your condenser fan motor is not at speed is slow starting a humming sound and excessive heat. In my experience this complaint is generally the result of a bad condenser fan motor that over heats and shuts of after a short period and the build up of heat in the liquid refrigerant line of course trips the compressor overload circuit- which by the way usually takes hours to reset. I hope you've already resolved this, but in case you haven't......
compressor is running overloaded possible problems bad relay/overload /capacitor dirty or clogged condensers if the unit uses a condenser fan suspect a bad fan. and defective thermostats are notorious for short cycling. id check the coils first and if dirty clean up maybe that can be the major problem.