Question about AmcorAire UCHW-H12AF2 Split System Air Conditioner

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Does the front section just pop off on the indoor unit of a Amcore S/S to access the fan and refrigerant connections?

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There are 3 tabs underneath that need to pulled out to access 3 screws that need to be removed. the the bottom portion gets lifted off.
Support@Pridiom.com
201-266-8234 option 2

Posted on Sep 02, 2011

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Concept 1000 ac unit. Fan comes on but no air come into the house and the line freezes outside next to the unit. I'm lost!


Check your indoor air handler unit. If the coil is frozen, it is usually one of two problems. You are low on freon, or your filters are clogged and not allowing enough airflow over the coil.

Mar 20, 2017 | Heating & Cooling

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Indoor unit working ,outdoor unit fan and compressor won't start


Tell me more. But first "suspect" is a bad power relay. But are you sure the breaker has not "popped"? 2. 24vac transformer for thermostat signals is out. Does it have power? Could be on the same circuit as the outside unit (condensing unit), or another one that may have "Popped" First one will be a 220vac breaker, the second one will be standard 110vac. If you find a "popped" breaker and it pops again when you try to reset it, you need to call an electrician. Or HVAC technician. Be prepared for the worst.

Mar 12, 2015 | Heating & Cooling

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HOW do i replace the indoor blower fan on a GE PTAC?


Need to pull the unit out of the sleeve to access the motor and fan. the fan is located in the front under the evaporator coil. Difficult to replace but can be done. Just need to nvestigate and figure out how to do it. Search for a parts diagram on the Internet for the model of the unit and it will show you where the motor is located and the parts around it.

Mar 09, 2015 | GE Heating & Cooling

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How to troubleshoot thermostat wiring?


I'm not sure if the thermostat is wired correctly. First, the thermostat is wired directly to the outdoor unit (compressor/condenser unit). It is NOT directly connected to the indoor unit. It connects to a low voltage control panel in the outdoor unit that sends a signal to your indoor fan/evaporator. This wire is called the fan relay switch and physically runs between the low voltage controls of the indoor and outdoor units. If the fan relay is bad it's possible that the unit runs continuously. To prevent destroying your outdoor unit there is a safety feature that prevents the indoor fan from shutting down while the outdoor unit is running. If the indoor fan did shut down while the outdoor unit was running than you would slug your compressor. That is, your compressor normally sees refrigerant gas but is instead seeing refrigerant liquid. That would not be good since this scenario would destroy your compressor. It sounds like a faulty fan relay. The actual contactor portion of the relay is in the outdoor unit.

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Flashing light the at says e6


Usually Indoor Unit Anti-freezing protection (Cooling
Mode) or Over-heating Protection (Heating Mode)
for Evaporator
A) Indoor room
temperature too low
under cooling mode,
Too high under
heating mode
B) Indoor unit filter or
evaporator too dirty
C) Indoor unit fan motor
blocked
D) Insufficient refrigerant
under cooling mode
E) Indoor unit evaporator
sensor wrong
connection or failure

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1 Answer

Front grill


Check the air filter and if it is dirty, replace..
Turn equipment off and let the ice melt.
After ice melts, place a/c in cooling mode and set the thermostat to 3 degrees below room temp display.

The indoor unit fan should start blowing cold air immediately and then turn off once the room temp drops one degree below the cooling temp setting.
If the indoor unit does cycle off, check the outdoor unit and make sure it turns off at the same time.
If the outdoor unit continues to run and the indoor fan is not running, the indoor unit will ice up.
A defective compressor relay that is stuck in a closed position will cause icing of the indoor unit because it keeps the compressor running when it should turn off with the indoor fan.

Do you have an error code being displayed on the controller?
Is there an led light that is flashing on the indoor unit?

Another possibility causing the indoor unit to ice up is if the freon in the system starts to get low.
Make sure the ice has all melted for this next check.
Pretty easy to check without special tools.
If the air filter is clean and there is no dust/ dirt blocking the fins on the indoor unit, turn a/c back on to cool and check that the indoor unit fan comes on and is blowing air good.
Once everything seems to running good go to the outdoor unit.
There will be two lines with black rubber insulation covering them.
Peel back the insulation three inches on each line and observe the copper lines.
If either line starts to frost up the a/c system is most likely low on refrigerant.


Another cause of indoor unit icing could be that the aluminum fins behind the air filter are clogged with dust or other foreign material.
This would block the air that must be pulled in causing the indoor unit coil to become too cold due to lack of air flow and it will ice up.

Operating the cooling system when the outdoor temperature is below 60 degrees can cause the indoor unit to ice up also.

I'm Robert.
Florida certified a/c contractor. 30 years experience.
Hope this helps.


Mar 18, 2014 | Fujitsu Heating & Cooling

2 Answers

Inside motor not running and will not run on just fan. cage turns easily by hand


If the out door unit is running without the indoor fan running, you could possibly have a motor burned out or your indoor unit.
If nothing is running, check to make sure all panels are on inside, and that you have electricity to the indoor unit. Some air handlers and furnaces are equipped with a safety switch on the access door to the motor assembly. Also , there may be a switch that looks like a light switch beside the indoor unit.

Once again, check and see if the outdoor unit is running. It will eventually freeze up without the indoor fan. Hope this helps. Please email me if you have any more questions , I will try to step you through. Mark

Jul 11, 2011 | Ruud Heating & Cooling

1 Answer

I have a Fujitsu inverter split system,(ASTA18LCC) which the power was removed for a while. Now when you start it up on any mode the red operation light is on briefely, then the green timer light flashers...


To work out what the error code ispress the orange start/stop button on the remote controller so unit operationis stopped.
Then press and hold "energy save" and "zone control" buttonsimultaneously for at least five seconds, the error code will be along thelines of En:nn where the "En:" is the error code and the":nn" indicates the indoor unit address if there are multiple indoorunits connected to the one controller. If the upper vertical bar on the capitalE is missing so it looks maybe like a 2 or something don't worry for somereasons they just do that
Some common error codes are:
E0 Communication error between indoor unit and wired remote control, check ifthere is 12VDC between terminal 1 + 3 at remote control and 8-9VDC pulsatingbetween terminal 2 + 3. If DC volts out of Indoor pcb is below about 11.6VDC itwill cause this error, the problem is normally dry capacitors in the 12 VDCpower supply section. This model has two power supply sections on indoor pcb.
E1 Communication error between indoor unit and outdoor unit,
EF Discharge temperature abnormal
Is it helpful?

Dec 27, 2010 | Fujitsu 24C1 Air Conditioner

1 Answer

Air conditioner not blowing out enough cold air fan is working but frost is built up outside and in on lines


Sounds like the unit may be Short on refrigerant, the frost can be sign the refrigeration is taking place on the pipework between the indoor and outdoor unit and not on the internal coil (evaporator indoor unit)

All the best

Jul 05, 2010 | Heating & Cooling

1 Answer

Upper section of refrig. not cooloing. Remainder


check to make sure the freezer fan is turning. This should be inside the freezer unit at the top. It is probably behind an access panel.

If this fan is not turning, not enough cold air will move to the refrigerator side to keep it cold enough. If the fan has died, it will have to be replaced.

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