Question about Fedders Y Chassis AEY12F7E Air Conditioner

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Failed heat function

All functions work properly except no current through heat coil. 120volts present on both sides of small transistor like component (240volts across this component) on heater coil, but this small component (not shown on wiring diagram) seems faulty. What is this small component for and can it be bypassed (excluded from circuit)?

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No its a thermal fuse you can by pass it for testing but run long witout it and may get fire other disc is thermal limiter which if it fails then thermal fuse blows i reccomend replacing both as thermal disc may be stuck in closed position

Posted on Mar 31, 2008

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Coils are frozen on my standard electric heating system. It is not a heat pump

The most common cause of coils, lines or components freezing over are low refrigerant charge, lack of airflow across coil or a blockage of the condensate drain. If the outdoor coil is frozen over then the defrost mechanism may not be working properly.

Nov 23, 2013 | Heating & Cooling

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What the low and high side pressure for r410 freon

That depends upon the operating environment of the a/c system.The high side is directly related to the outside temperature and the low side depends upon the indoor temp, air flow across the evaporator coil, the relative indoor humidity and the static pressures of the duct system. There really is no rule of thumb to go by here but if all is operating properly then you should see something like this:

At 80° F the high should read from 277 psi to 295 psi with a clean condenser coil and the low will be about 116 psi to 130 psi or so if the blower and inside coil are functioning properly and the house temp is not too high or low.

If you are working with the high pressure of R410A refrigerant, also known by the trade name of Puron, then please take precautions to avoid accidental exposure of the face, eyes and exposed skin of the refrigerant and the POE oil it contains. Severe frostbite, lung damage and loss of eyesight may occur if exposure to raw refrigerant is experienced. Please consider calling a professional in your area to work on any refrigerant system.

Jun 16, 2011 | Goodman CKL42AR42 Air Conditioner

1 Answer

Have a two pole 80 amp push in breaker that is reading 220 on 1 load side and 120 on the other load side? how is this possible???

220 volts power to device. 120 volts is coil volts of the relay. when this 120 coil energized by control commanded, the 220 volts passes to device. When it de-energized, 220 cuts off to device.
How you are getting 120volts. It's from transformer 220-120 which will be in your unit.

Jan 10, 2011 | Heating & Cooling

1 Answer

The ptac unit is not heating or cooling the aux heat works the line out of the compressor gets hot but the line going to the coils up front does not get real hot just warm and does the same thing on the...

Verify all your components are operating - Compressor? Condenser fan motor? Blower fan motor?
If not check voltage to any that are not operating.
If all components are operating and the coils are clean - the refrigerant level is most likely low.

Oct 28, 2010 | Amana PTH153B50AJ Heat Pump Air...

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We just installed a new Goodman HVAC and the compressor lines freeze up. The technician that installed the unit cannot find the problem

Not to be critical, but not much of a technician if he cannot properly troubleshoot the issue.

Several issues can cause the freezing problems:

1. Refrigerant charge issue.
2. Improper equipment sizing.
3. Air flow issues.
4. Metering device issue.

First is under charge. But before making this determination several other things must be diagnosed and resolved.

Was the unit sized properly using a heat load calculation? You may not know what this means but a reputable, knowledgable contractor does. If the unit was oversized, it can cause the unit to freeze. If the indoor fan & motor were undersized. it may not be moving enough air across the coil and this will cause the coil & suction line to freeze.

Air flow issues, such as obstructions in your ducting or across your evaporator coil will cause the coil to freeze, thusly your suction line will freeze as well. Is the filter and evaporator coil clean? Are there any obstructions in the air passages (duct)? Is the duct work sized properly. Improper sizing of the duct work may choke down the required return air flow, and cause the coil to freeze.

The last issue could be a problem with the metering device. If it is an adjustable thermostatic metering device, was it setup to maintain a 12 degree suction superheat? If it is a fixed metering device, such as a cap tube device or bullet (orifice) device, it mat have a restriction (ususally a piece of solder or flakes from the soldering process clogging up the inlet screen). To easily check this, thaw the system out, start it back up when thawed and look for frosting or ice accumulation at the metering device outlet side. I fit does this rather quickly, then the system must have the refrigerant recovered (or pumped down into the condenser) and the blockage removed.

If it is air related, this must be fixed prior to properly trying to charge a system. Unless the proper airflow has been established, charging the system, or checking charge cannot be properly performed.

Sep 03, 2010 | Goodman Heating & Cooling

1 Answer

Not colling, everything seems to be working inside the furnace, outside the unit does not make any sounds nor the outside fan is working.

you need to check for 240volts a.c. at the unit,then if you have it there then check for the low voltage 24 v.a.c. that controls the outside contactor that sends power to the compressor,if you have power to these components then replace the dual-section capacitor near the contactor one side is f for fan/the other side is h for hermetics(the compressor) /the c is common for both sides of the capacitor

Aug 01, 2010 | Goodman CKL49AR49 Air Conditioner

1 Answer

Thermostat wires dead

If you have a split system (an air handler that blows air into your house and an outdoor unit that has the compressor and condenser coil/fan), then you should look in the electrical compartment of your indoor unit and see if you can locate a low voltage fuse. This is usually located on the control board or between the transformer and "R". Make sure you shut off the power to your indoor unit first as they will still be 240volts available there. If the fuse is blown, replace it and reinstall your thermostat. Turn the power back on. If the thermostat is wired properly with no damaged wires in the process, the system should work fine.
If there is NO fuse, then check the low voltage side of your transformer using a Voltmeter. You will have to have the power on to perform this test. Be very careful. On one side of the transformer, you will read 240volts. The other side should read 24 volts. If there is no voltage on the 24volt side, you blew the transformer and will need to replace it.
Check these items first. If you need further assistance, let us know and we will dig a lil' deeper. :-)
24%20v%20transformer.jpgpicture of a typical transformer.

The low voltage fuse could be a glass cartridge fuse (systems typically older than 15 - 20 years old). Newer systems use the same style fuses that are used in your truck or car (ATC type).

Apr 08, 2010 | Hunter 30124 Air Conditioner

2 Answers

Outside compressor and fan motor working properly also airhandler fan motor working but wont cool below 78 and the inlet lines (the small ones ) are freezing slightly on the airhandler coil but the rest of...

sounds like you have a restriction in your metering device, if it is a TXV it has a small screen in it that will capture debris in the system. This is a selaed system problem and unless you have proper tools will require a technician. (probably not what you wanted to heare..sorry)

Jul 19, 2009 | Goodman CKL60AR60 Air Conditioner

1 Answer

Heat pump cycling on and off.

It sounds as if you you have a low charge of refrigerant, r22. When the unit comes on outside, the outdoor coils become the lowside, there is a low pressure switch that is tripping out contactor protecting the compressor.

Mar 11, 2009 | Heating & Cooling

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