Tip & How-To about Carrier 38BRC036 Air Conditioner

Don't jump to "Its low on charge; because its froze up"



A low charge diagnosis for instance can be miss read if the evaporator is iced up or has any ice in or on it. A sticking thermostat, relay, or contactor could be causing the compressor to run on when it should be off, or air flow blocked or the fan motor on the evaporator cutting off when it should be on or a dirty filter or closed vent, or misplaced thermostat sensor could all lead to a freeze up of the inside coil as well as a few dozen other things other than low charge.

To answer with any clarity we need to know is this a window, mini split type unit or central and what kind of thermostat do you have electronic display or no display just t knob pointer? Need to know what is running and what is not running I.E. Fan only; Fan and compressor only; Fan out side and compressor unknown if it is running...

And here is a real stickler, you say it has a leak and had to have a charge of refrigerant. What kind of refrigerant is it R22, R134A, R410A... And for sure was the evaporator coil still iced up when you decided it was low on charge or was it defrosted and room temperature?

All these questions have to be answered to get you steered into the correct area.

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1 Answer

I turn my ac on and works good and after a few minutes it blows hot air


There are a number of things that will cause a/c to stop working. A low refrigerant charge (possible leaks), pressures that are too high (or too low), icing in the evaporator, faulty compressor clutch, faulty binary switch (a temperature switch that monitors the evaporator for ice), damaged wiring to any of the aforementioned components. I recommend taking the vehicle to a shop you trust for diagnosis.

Aug 17, 2014 | Cars & Trucks

2 Answers

Kenmore AC, no cold air


If the evaporator tube is iced up entering the coil and cool to warm leaving the evaporator, that would indicate low on refrigerant or a restriction. If it is iced up entering and leaving the evaporator, then, it could be low on refrigerant,blower not running at proper speed, dirty evaporator coil or filter.
You need to check the suction and head pressure and temperature to determine problem for sure.

Jun 07, 2010 | LG LWHD1200FR Wall/Window Air Conditioner

1 Answer

not puuling humidity out


To answer with any clarity I need to know is this a window type unit or central and what kind of thermostat do you have electronic display or no display just t knob pointer? Also I need to know what is running and what is not running when your trying to get it to dehum. I.E. Fan only Fan and compressor only Fan out side and compressor unknown if it is running...

And here is a real stickler, you said it has a leak and had to have a charge of refrigerant. What kind of refrigerant is it R22, R134A, R410A... And for sure was the evaporator coil still iced up when you decided it was low on charge or was it defrosted and room temperature?

All these questions have to be answered to get you steered into the correct area.

A low charge diagnosis for instance can be miss read if the evaporator is iced up or has any ice in or on it. A sticking thermostat, relay, causing the compressor to run on when it should be off, or air flow blocked or the fan motor on the evaporator cutting off when it should be on or a dirty filter or closed vent, or misplaced thermostat sensor could all lead to a freeze up of the inside coil as well as a few dozen other things other than low charge.

If these ideas give you an indication as to where to look or what to check futher please rate me as high as you can. If you need more information I need you to answer soem of the above questions with as much clarity as you can. And thanks for using fixya.

May 16, 2009 | Goodman Heating & Cooling

1 Answer

kenmore elite 596 73503201 no cooling in top compartment


if the freezer is getting cold the problem is due to the cold air from the freezer not getting into the refrigerator. There are several things that can cause this problem. The coils in the freezer icing up and not defrosting properly is one of the things that can cause the refrigerator not to get cold enough. Another problem is the fan that blows the cold air from the freezer compartment into the refrigerator, not working. When the compressor is running open the refrigerator's door and push the switch that makes the light go out. You should hear the fan blowing the cold air from the freezer into the refrigerator, when this switch is pushed in. If the fan is working then you will need to find what is blocking the air flow. Iced up coils are a common problem. The icing problem can be due to a defective defrost timer or something defective in the defrost circuit. Click here for more information. Check for these problems and let me know what you have found.
REFRIGERATOR TROUBLESHOOTING
#1 Refrigerator side getting warm Freezer still cold
Evaporator fan motor not running.
Defective defrost timer. See Defrost Diagnosis Procedure
Defrost heater defective. See Defrost Diagnosis Procedure
Defrost thermostat defective. See Defrost Diagnosis Procedure
Airflow blocked from freezer compartment.
Freezer control turned to "coldest" setting blocking air flow to refrigerator side. On most refrigerator/freezers, the freezer control closes a baffle when turned to coldest setting, and this blocks off the air flow to the fresh food compartment.
Fan blade broken.
Defective door switch on older models.
Light staying on with door closed.
2 Refrigerator & freezer compartments both are getting warm
Make sure refrigerator is plugged in and has power.
Condenser fan motor on bottom under refrigerator not running.
Condenser coil clogged.
Defective defrost timer. See Defrost Diagnosis Procedure
Defective defrost heater. See Defrost Diagnosis Procedure
Defective defrost thermostat. See Defrost Diagnosis Procedure
Evaporator fan motor not running.
Cold control defective.
Compressor overload defective.
Compressor relay defective.
Light staying on with door closed.
Compressor defective.
Low on refrigerant. #3 Freezer compartment getting hot.
Defrost timer stuck in defrost cycle.(replace)
Defrost thermostat stuck.(replace)
Ice maker stuck in harvest cycle
Light staying on with door closed. 4 Ice maker not making ice
Defective inlet water valve.
Freezer temperature not cold enough. (see problem # 2 & 3 above)
Defective thermostat in ice maker.
Defective drive motor.
Water inlet tube clogged with ice.
Defective module in newer style icemaker. 5 Refrigerator sweating around door edges
Door gaskets leaking air.
Defective case heaters.
Energy saver switch not set to reduce exterior moisture
also if require more help click the link http://www.applianceaid.com/refrigerator.html please do rate the solution .thanks in advance.thank you for using fixya.

Mar 27, 2009 | Refrigerators

2 Answers

Thaw's. Turn-off for period of time it would freeze as normal


Make sure nothing is inhibiting air flow. I don't think it is advisable to store food in an ice machine however that is not likely the problem unless the food itself is inhibiting air flow. Most ice machine manufacturers recommend against storing any food in an ice machine. If there is a freezer component in you model the check to see if the evaporator coils are frosting up and the frost is blocking airflow causing the ice storage chamber to get warm. High humidity can cause frosting. Leaving a door to the ice maker open too long can cause frosting. A low refrigerant charge can do this although it seems logically like it should not. With a very slightly low charge one end of the evaporator gets super cold and the other end is not cold enough. Frosts starts collecting on the super cold end and accumulates across the evaporator coil to the other end eventually blocking all air flow. With too much humidity from open doors frost accumulates over the entire evaporator evenly but still blocks. You shut the unit down. It thaws out and works OK on restart until frost again builds up. If its not a frosting problem but it just stops making ice then the ice may not be releasing. Check the water supply and change any filters to insure good water flow. A good water supply is required for proper release and harvest of the ice in many ice machines. If the ice doesn't release it takes a shut down and thaw to clear the suspended ice out. Check for these things and write back if you need further assistance and can provide me with more details.


Jan 19, 2009 | Hoshizaki Freezer Commercial Ice Machines...

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