Question about Carrier 38CKC042 Air Conditioner

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Carrier N3 flashes three times (catalogue says "indoor coil sensor malfunction"). How can i fix this??

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Hello THECOOL The sensor is a freezestat sensing ice.Try a new air filter.Low air flow is a cause of freezing make sure the intake is not blocked and all the supply outlets are open.

Posted on Aug 03, 2010

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Posted on Jan 02, 2017

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1 Answer

Carrier ac E4 error


If this is a ductless mini split e4 appears to be an air temp sensor on the indoor or outdoor unit that is sensing an abnormal reading. Check air filter and both I.d & o.d coil cleanliness. Its hard to troubleshoot without a model number. If its a 38g or 40g in the model number its a discharge temp sensor reading high temp situation (dirty o.d. coil, low freon, refrigerant restriction. Again, need a model #

May 29, 2015 | Carrier Heating & Cooling

1 Answer

I have an Amana Ptac Model # PTH123A25AB. It is showing F1 on the display. How do I get it working again?


Evedently F1 is an indoor thermistor problem. This is the sensor that is at the indoor coil. Normally a wire it lead that is attached to the front of the indoor coil. This lead is either unplugged or damaged/malfunctioning. Found this on "manualslib.com" but I'm unable to copy the link.

May 22, 2015 | Amana Heating & Cooling

2 Answers

Sir, carrier model42QG24-C comeing to off after 5 mint and then on after some time it repeate this cycle again and again. The red led on pcb is blinking regulerly..


More than likely it is cycling on its low pressure control.. It is an automatic reset device but each time it cycles off, the TDR (time delay relay) keeps it from restarting for approximately 5 minutes.

A steady and rhythmic 'heartbeat' on the circuit board typically means 'normal' operation. If it flashes, stops, flashes, stops etc, it would be giving you a fault code telling you what is cycling it off. You have to count the flashes, slow or fast or a combination of slow and fast and look up the fault codes.

Apr 28, 2015 | Carrier 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

Carrier Comfort Zone II Thermostat is blank and the 3 companion thermostats are all showing Error Code C1. What does that mean?


Hi Anonymous,
For all wall mounted and Artcool split system codes

Error code = C1 or CH1
Flashing Light = 1
Fault = Indoor temperature sensor open or closedcircuit.
Display = Indoor.
Indoor Operation = ON

Error code = C2 or CH2
Flashing Light = 2
Fault = Outdoor temperature sensor open orclosed circuit.
Display = Indoor Outdoor.
Indoor Operation = ON

Feb 14, 2015 | Carrier Heating & Cooling

1 Answer

Er 03 for carrier air conditioner indoor unit 42SD7C Problem


REPLACE INDOOR COIL SENSOR LOCATED AT COOLING COIL "U" BEND.

Aug 19, 2011 | Heating & Cooling

1 Answer

Its not working and flashing P6. Its a Mr Slim


dear sir/madam i think.... mr Slim A control R407c & R410a systems.
P6 = indoor coil frost protection in cooling or indoor coil overheat protection in heating.

Cooling
One of the 2 indoor coil sensors reads minus 15 deg C for 3 mins.
Heating
One of the indoor coil sensors reads over 70 deg C.

If you are sure the refrigerant charge is correct & system operation is correct then it could be a coil temperature sensor reading wrong temperature.
If you have one of those little monitor things which plug into the outdoor circuit board you can monitor the indoor coil temperature.
On later type remote controllers you can get all operating data like temp sensor data but you will need a service manual to do this.
Or you can measure the ohms resistance of the temp sensors & compare with the chart in the service manual. if you can do it by yourself do if not then contatct ot mitsubishi maintenance personnnel for furhter action, thank you hope answer the question please vote!

Sep 23, 2010 | Mitsubishi Mr. Slim MXZ30TN Air...

2 Answers

Mr. Slim MXZ30TN Air Conditioner: Indoor unit blinks on and off what is the problem?...


continuous flash is frost prevention ...clean the filter & switch fan to high

flashes once every 2 sec could be room air sensor contact loose/short...call dealer

flashes 2x every 2 sec is indoor coil sensor contact loose/short...call dealer

flashes 3x / 2sec sensor contact problem, or compressor overload protection trip or gas leak...call dealer

May 17, 2010 | Mitsubishi Mr. Slim MXZ30TN Air...

2 Answers

Air con indoor unit is flashing 6 times out door is off


Please specify the make and model of your unit.
If this is a LG inverter model.
The six flashes of the indoor unit light indicates a CH 06 alarm.
This alarm state indicates that the indoor unit pipe temperature sensor has measured a temperature out of range or the unit is protecting itself from this low temp state. Indoor unit coil temperature to low. Should it have reached a temperature of -5°C for longer that 30sec it will switch the machine off.

It could indicate that the unit refrigerant charge is too low or the sensor has gone out of calibration.

It should measure 5kΩ @ 25°C

Mar 16, 2010 | LG Heating & Cooling

3 Answers

Carrier hi wall split unit on light flashes 4 times ???


as i am a mechanic in sydney australia, i can honestly say that the chance of you getting help via carrier is very very slim... the reason it is doing that is that it has a legitimate problem unfortunately i have a carrier 42g250h which is flashing 4 times aswell... i have been waiting now 10 working days for carrier to call me to tell me what the problem is... if you can afford to do it, throw the damn thing out and buy a new one, i hate to say it but even an LG will work better than these heaps of ****

Feb 23, 2009 | Carrier 38CKC042 Air Conditioner

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