Question about LG LSC121PMA Split System Air Conditioner

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Evaporator unit turns on for about 15 seconds then turns off

The evaporator unit opens the fins and never turns on the fan then shuts off after ten seconds I noticed that I have 6 volts per line coming in not the 36 that it calls for any help???

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  • nitrousbaby Jan 08, 2008

    ok I will check that out thanks!!!!!

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  • 236 Answers

Out of range thermistor can cause the tripping of indoor or outdoor unit. Try to check the resistance of your thermistor it should be 8 to 10 kilo ohms at 25 deg. c temp.

evaporator unit turns on for about 15 seconds then - 78b66b0.jpg

Posted on Jan 08, 2008

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Posted on Jan 02, 2017

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Reset the alarm light on a hoover nextra frost free


na

you need to full defrost it doors open for a few days

this melts the ice monster behind the freezer compartment
you can access it from inside the compartment from a few screew

whats happened is the drain holes to the evaporator are blocked
so it will never go frost free
because the blast chiller section
where the fan is at the back on the freezer compartment isnt running and its drain hole is also blocked
you can use a pipe cleaner brush or something
and dress it will salt
youll find a tube goes from inside the chiller to the same evaporator tray usualy set above the compressor as its source of heat

so once you clear the tubes check the fan
clear the ice monster
check for any rubbish down the back of the unit
and clear it away
also the unit should be atleast 4" from the wall and with good ventilation

now fully clean turn it on close the door
wait twenty mins
open the freezer you should get rolling vapors from it
and you should also hear the fan running quietly

give this a try....

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I have a Goodman a/c unit. Fan stopped shut off


replace the motor the bearing has seized up.

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I have a trailer with a duo therm ac..the outside fan is coming on but nothing is blowing thru the registars


Not sure where your located, so check that unit didn't freeze up on you. Make sure evaporator and condenser coils/fins are clean and run on fan only to aid in thawing them out. Once you see condensation running off roof good, try using cool again and see what happens. When they freeze up, airflow gets restricted through unit. The outside fan and blower wheel for forced air inside are attached to same motor, so if fan is working, blower wheel should be turning as well unless it is broken, or allen key has come loose on clamp around center of blower wheel. Other possibility is that the blower wheel is turning but forced air ducts have blockage at inlet, which will require letting ceiling assembly down to inspect, or removing cover on roof and screws at front evaporator and opening it up. Make sure power is off during inspection.

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A/C runs but Fan does not shut off when compressor stops. Raising thermostat shuts unit off. fan auto/ on switch works normal. what are possible solutions?


First of all, remove filter at ceiling and with a flashlight or other source, when Compressor shuts off, look way up inside where evaporator coils are and see if you can see ice, or frost on coils/fins. It may be freezing up and fan will continue to run to aid in defrosting.

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1 Answer

I noticed an unusual high pitch sound which I traced back to the refrigerator. I then noticed that the front panel lights were flickering on and off and so was the external ice maker lid. I turned the...


Hi and welcome to FixYa, I am Kelly. First off the high pitched sound you heard was most likely ice build up on the evaporator so th evaporator fan blades were striking the ice. Now as for your shutting of the unit and staring right back up..... You need to wait 15 - 20 minutes of OFF time when ever there is a power interruption. What is happening now is that the compressor can not restart because the coolant pressures are to high. That 15 - 20 mins of off time will afford that pressure stabilization time.

What you really need to do is remove the freezer contents and place a fan blowing into the freezer compartment to manually defrost the freezer evaporator. (about 2 hours of floor fan time) This should get rid of the high pitched noise. Then.... restart the unit. It should restart.

I suspect that you have an automatic defrost problem is why you had the noise. The manual defrost will only get you 2 - 3 days of normal operation again before it once again starts the icing routine. I want to get this off now to get you started on the manual defrost. I will respond with a 2nd post about the defrost problem.

Your to do list...
1. unplug the unit.
2. Manual defrost with floor fan (2 hours of fan and water mess)
3. Restart the unit
4. Watch for next post about defrost.

Thanks for choosing FixYa.
Kelly

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Samsung dlp keeps shutting off


Could be several things but the most common causes are:

1. Make sure that the lamp is working:
-make sure it lights up as viewed through the lamp access panel or the back of the set and stays lit. New lamps for most units are available on eBay for less than 100.00 with free shipping.

or

2. That the lamp access door safety switch is properly held in place:
-make sure that the lamp access door is in place and that the screw is snug. The symptoms of a bad / broken or open switch is that the unit will light up and the fans will spin for about 15-20 seconds then the unit will power down.

Other notes: A general comment on cleaning the fans... that is only part of a heat problem or preventive maintenance. Make sure you also clean the heat syncs of any dust. These are the fin shaped items... some are black and others are silver... found near or behind the fans. Get yourself a one or two inch SOFT bristle paint brush and gently wipe the fins clean with the nozzle of a vacuum cleaner close to the area to **** up the dust. Clean fans won't do much good if these are coated with dust and most of them are after a few months of service.

I have two 50" units and I clean them every year in the spring... before the heat of the summer hits. Unlike other TV designs, DLP's move a LOT of air so this is important.

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2 Answers

I have a Goodman 3.5 ton, CKL42-1 outside unit. It was not cooling properly so I cleaned the fins because the were quite dirty. When I turn the system on it will run fine for about 20 minutes and then the...


how did you clean the fins if you powerwashed the chances are you bent all the fins over so the fan cannot pull in air and is shutting of on overload when it cools down it will come back on then heat up and shutoff again

Jul 27, 2009 | Heating & Cooling

1 Answer

Samsung AW1003M Air Conditioner how to clean Fan inside??


hello! there well, there are two fan coupled together on a/c the condenser fan and blower fan,if this is split type the fan and blower are separated.the procedure is the same way.doing this release lock off and take off front cover then pull out ac unit assembly,after pull out,open terminal control box disconnected all wiring connected on compressor motor and fan motor, loosen all stud bolt on compressor blower fan case.this well exposed fan and blower w/ the motor.cover the motor of plastic sheet then, pressurize water wiil use to clean blower fan observed the motor not to wet by water if this wet don't try to run let it dry off or else this wii burn out so take all necessary precaution, beside mosly cleaning procedure includes the fin tube of condenser and evaporator there are foriegn particles and moisture emerged in evaporator mostly that why insufficient cooling effect on condenser heat rejection also affected if dirty fin tube emerged,.theres is lye detergent use and mix to water pour this to evaporator and condenser fin tube wait for 15 to 30 min soaking to rinse dirt will come out to fin.observed not to distorted fin of tube on eveaporator and condenser.,then pressurise this by water again if cleaning was done dry it off until all dirt disappear.if finishe put back all casing of compressor,evaporator and condenser, then connect all electrical control connection on circuit board, double check connection just put back what ever disconnected parts dont try to alter specially electrical control connection on circuit board.this is a hard task and risky if yout not qualified to handle this job bring it or call a service technician.have a nice and cool day regards and thank's.

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