Question about AmcorAire UCHW-H12AF2 Split System Air Conditioner

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E4 message no cool air. Heat is fine, fan and

The piping is freezing but still no cool air.

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If the fan inside works , the unit is probably low in refrigerant , or the filter is clogh with dirt.

Posted on Sep 27, 2009

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Posted on Jan 02, 2017

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1 Answer

Pipe to my concept 1000 air conditioner was frozen and no cool air was distributing, fan to outside unit is running and I removed frost off pipes what else do I need to check?


It has to completely thaw first. If indoor fan is running and the filter is clean it is freezing up because of a lack of refrigerant .

Jun 10, 2017 | Heating & Cooling

1 Answer

I have a carrier ac moddal 38HKC48DS3002 4 ton that will run for about 10 mintes before off the coppreser and than displing show E4


If unit displays "e4"

1? Check whether the winding resistance and
operation current of the compressor are normal.
2?Check whether the high and low pressure is normal
when the unit is running.
3?Check (whether the coil pipe sensor is normal)
whether the contact of the inserter on the circuit
board is well, the coil pipe temperature sensor is
fixed, the evaporation of the indoor unit is well,
the key is to check the evaporator temperature
detected by the coil pipe temperature sensor has
reached the cooling or heating temperature.
4?Check whether the surface of the condenser is too
dirty, it should be cleaned when it is too dirty.
5?Check whether the capacitance of the outdoor motor
and the fan is damaged, it should be replaced when
it is damaged.
6?If the above items are normal, the electric control
board should be replaced.

Air Condition Fort lauderdale

Apr 12, 2015 | Carrier Heating & Cooling

1 Answer

Error code e4 on daikin split system ducted air conditioner - what does it mean?


This is stating that there has been a low pressure error on the system.

This could have been caused by a blockage in the pipe work or a possible shortage of refrigerant. It could also be due to a fault with the low pressure sensor/switch.

Jan 31, 2013 | Daikin RXYMQ48MVJU, VRV-S Air Cooled Eight...

1 Answer

What is a E4 code mean


Error Code:
E1 Loss of communication between the Single Zone LCD thermostat and the mod-ule board. LCD will cycle between E1 and the previous mode setting. System
will shut down.
E2 Open circuit or out of range Indoor Temperature Sensor. Heating and cooling
operation will be locked out. Fan operation can continue to operate.
E3 Shorted Indoor Temperature Sensor. Heating and cooling operation will be
locked out. Fan operation can continue to operate.
E4 Open circuit or out of range Outdoor Temperature Sensor (select models). Heat
Pump operation will be locked out. Air Conditioner, Fan and Furnace operation
can continue to operate.
E5 Open circuit or out of range Freeze Sensor. Air conditioner mode of operation
will be locked out. Furnace, heat strip, heat pump and fan mode of operation can
continue to operate but displays the last temperature set-poi

Dec 18, 2012 | Dometic 3313192.000 White Single Zone LCD...

2 Answers

AIR IS NOT WORKING. hAVE SYSTEM SET AT 72 AND STILL SHOWS 85 DEGRESS IN HOUSE. PIPES AT THE TOP OF UNIT SEEMED TO BE FROZE


There are two things that make a central air conditioner freeze up, they are poor air flow, that means check your air filter, and your system is low on refrigerant, and that will take a serviceman to fill on refrigerant. For the time being set your thermostat cool/heat switch to off, and turn your fan switch to on. This will thaw out your cooling unit, and when the ice is gone you can switch the heat/cool switch to cool to resume cooling until you have figured out which problem you have.

Jun 24, 2009 | Heating & Cooling

1 Answer

E4 error message. a/c option will not work.


i have carrier ac and it showing E.4 it is not cooling at all please help to solve the problem

Jun 10, 2009 | GE APH10AA Air Conditioner

1 Answer

Small pipe running from outside unit freezing up


SOUNDS LIKE THE FAN SPEED MAY BE TO LOW SO AS THE AIR GOES THROUGH THE COIL IT WILL START TO FREEZE HAVE SOMEONE CHECK THE FAN SPEED MAKE SURE IT IS ON HIGH ALSO MAKE SURE IF THAT IS THE ONLY FILTER ON THE SYSTEM

May 03, 2009 | Heating & Cooling

1 Answer

My 2004 v6 lincoln ls air conditioner freezes up the climat control works just fine with the ac turned off when you are in auto with the ac on it freezes you out and after a while the air flow stops you...


One of 2 problems,either the system is low on freon or most likely the problem is a bad evap temp sensor. This vehicle does not use a cycling switch to cycle compressor on and off like a conventional system does but instead measures the temp at the evaporator core itself.

Mar 20, 2009 | 2004 Lincoln LS

1 Answer

Unit Won't Cool Or Heat Just Blows Air and Displays FP


fp means freeze protection when gets too cold out unit comes on by itself so pipes dont freeze

Jan 17, 2009 | Amana PTC093B50AJ Electric Heat Air...

2 Answers

WRAC has E4 on display


E4 means return air sensor error, if the error cannot reset may be the return air sensor is out of range or defective. But if the sensor is ok you need to replace the control board itself. The reading of return air sensor is 8k to 10k ohms @ 25deg. C temperature.

Jan 13, 2008 | Carrier XHB123D X/Y Series Heat/Cool Air...

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