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A/C Unit SAMSUNG -Outdoor unit model= MH080FXCA 4A was connected to 3 indoor units:

A location - indoor unit model MH026FNCA · B location - indoor unit model MH026FNCA· D location - indoor unit model MH052FNCA I set the outdoor SW01 to 3, because 3 units are connected of possible 4. I moved the dip switch of the outdoor unit to "off" position. I set the indoor A location unit SW01 on position 0. I set the indoor B location unit SW01 on position 1. I set the indoor D location unit SW01 on position 3.I rechecked all the communication cabling and piping. Everything is connected properly. When I start the A/C the indoor fan works but the outdoor does not start and I get E2 01 error (communication error). Am I doing something wrong? Can you please help me with any suggestion?

Posted by Anonymous on

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  • 1,448 Answers

It's possible you have a bad data wire on one of the systems. Swap the data wire or both if two with a different wire. (1&4--2&3) whatever. Whatever you do inside obviously do outside. Might have extra resistamce that is throwing the error but will be fine for a ground wire.Or do one system at a time, being sure to change your dip switch settings until you figure out the problem unit. Good Luck!!

Posted on Apr 19, 2017

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Posted on Jan 02, 2017

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SOURCE: control cable wires crossed

I would not do anything just yet It might be more prudent to call Panasonic help line, and explain your findings I feel that the system will not have suffered any damage if the control cables have been simply wired incorrectly if that is the problem, try and find a call number from your installation paperwork, good luck.

Posted on Jun 08, 2009

greenspan
  • 1734 Answers

SOURCE: LG split (3 indoor) LMU360CE

The LED #2 is only flashing while in disconnection or short in Thermistor (3 sec off / 0.5 sec on). If you want to change it, note: this is not an easy job to do! You will need to remove the top panel, then remove the control paneland then the front panel to gain access to the thermistor. The part isnot available to the public and requires an authorized service techfrom LG to take care of this problem. You will need a special tool toremove the front door seal spring clamp.
But you can call customer service @ 800 243 000 and see if theycan transfer you over to parts. Just give them the model and serial #and see if they would be willing to sell you the thermistor part. Youwill also need the door seal spring clamp removal tool to make the jobeasier.

Posted on Aug 02, 2009

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SOURCE: fan is not spinning on outdoor unit

There would be a control wiring problem.Either the fuse is blown out, fan motor may be burnt out and blade is loosened.

Posted on Aug 15, 2009

  • 1169 Answers

SOURCE: indoor unit does not function -outdoor unit works

These units have circuit boards inside that have lights on them. These lights come on and tell you what the problem is. I have had 4 units do the same thing that yours is doing. The result has been that the compressor has gone bad. You have to get access to the control board to see the lights. There will either be one inside the inside unit or one inside the outside unit depending on exact manufacturer date.
Good luck and hope this helps.

Posted on Aug 23, 2009

ltldab
  • 152 Answers

SOURCE: Indoor unit freezing up

THE OUTDOOR UNIT HAS A CONTACTOR WITH THE CONTACTS WELDED TOGETHER THE CONTACTOR CONNECTS TO THE COMPRESSOR AS IT TYPICALLY PULLS A SURGE OF 20 -30 AMPS OR MORE..WITH THE INDOOR UNIT IN FAN ONLY THE COMPRESSOR SHOULD NOT BE RUNNING. THE CONTROL WIRES GOING TO THE UNIT HAVE 24 VOLTS TO THE CONTACTOR TO PULL IN THE CONTACTS TO SUPPLY 220 TO COMPRESSOR.

Posted on Mar 09, 2010

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1 Answer

I have inverter split Samsung AQV09ABAN. The 3 lamps blink, what is problem? I speak about outdoor unit.


What lights are blinking? What colors are they? How many blinks on each color?

Aug 29, 2017 | Samsung Heating & Cooling

1 Answer

After I replaced the pcb on my samsung air conditioner indoor unit it won't start and all 3 led's are blinking


I have had similar problems with Samsung. Apparently, the indoor board fits a lot of different models and each has to be "programmed" in to suit your model. Not sure what was wrong with your machine before but it has been known for these units to have a faulty outdoor fan motor which causes the outdoor board to fail as well. When this happens, the indoor unit will usually work fine for about a minute or 2 and then shut down, with lights flashing. The outdoor wont start at all. If these were the symptoms, I would suggest putting your old indoor PCB back and then getting a new outdoor fan motor and outdoor PCB.

Apr 19, 2015 | Samsung Heating & Cooling

1 Answer

I have a fujitsu air con which is flashing 3 times on the timer. It runs for 10 seconds and then shuts down and then flashes 3 times. Model is a AOTR09LCC


Serial signal (reverse) error, during operation.
Try turning power off at isolator for ten minutes and then switch back on. If error code persists, you will probably need a new controller PCB in the outdoor unit.

When the indoor unit does not receive the signal for 10 consecutive seconds during the operation >Permanent stop after 30 seconds.
[Diagnosis Point]
Check the indoor /outdoor cable connection (in order). If the cable wiring is not abnormal, measure the voltage of the outdoor
unit terminals and diagnose the defective location.
(Refer to the after mentioned [Serial Signal Diagnosis] for the voltage measuring method and diagnosis method.)

Feb 19, 2015 | Fujitsu Heating & Cooling

1 Answer

It shuts off and blinks 11


AHX18MEV
4 - 12
[8] SELF-DIAGNOSIS FUNCTION
1. Indoor unit
(AH-X18MEV, AH-X18MEV-1, AH-X24MEV, AH-X24MEV-1)
To display the self-diagnosis, hold down the AUX button for over 5 seconds on the indoor unit when the indoor unit is not operating.
• The operation lamp (red), timer lamp (orange) and Super jet lamp lighter) flash to indicate the information of malfunction.
(Display of self-diagnosis result)
The operation lamp (red) and the Super jet lamp (green) flash in synchronization with the timer lamp (orange).
(AH-XP18MV, AH-XP18MV-1, AH-XP24MV, AH-XP24MV-1)
To display the self-diagnosis, hold down the AUX button for over 5 seconds on the indoor unit when the indoor unit is not operating.
• The POWER CONSUMPTION indicator indicates the information of malfunction by showing the main category error (number) and the sub-category
error (-number) alternately in 1-second intervals.
Example: Compressor high-temperature error
Remark

3. CHART
<INDOOR UNIT> ?:1-second ON / 1-second OFF
Problem
symptom
Outdoor
unit indication
(LED1)
Indoor unit Malfunction
No.
Content of diagnosis Check point Action
Lamp Main Sub Main Sub
Normal
condition
Normal
blinking
? ? ? ? ? Timer (Orange) 0 0 Normal
Operation (Red)
Super Jet (Green)
Indoor and
outdoor
units do not
operate.
1-time ? ? ? ? ? Timer (Orange) 1 0 Outdoor unit
thermistor
short-circuit
Heat exchanger
thermistor short
circuit error
(1) Measure the resistance
of the outdoor
unit
thermistors.
(1) Replace the outdoor
unit thermistor
assembly.
? Operation (Red)
Super Jet (Green)
? ? ? ? ? Timer (Orange) 1 Outdoor temperature
thermistor
short circuit error
(2) Check the lead wire
of the outdoor unit
thermistor for torn
sheath and shortcircuit.
(2) Replace the outdoor
unit thermistor
assembly.
? Operation (Red)
? Super Jet (Green)
? ? ? ? ? Timer (Orange) 2 Suction thermistor
short circuit
error
(3) No abnormality
found in above
inspections (1) and
(2).
(3) Replace the outdoor
unit control
PWB assembly.
? Operation (Red)
? Super Jet (Green)
? ? ? ? ? Timer (Orange) 3 2-way valve
thermistor short
circuit error
? Operation (Red)
? ? Super Jet (Green)
LED1
AU-X24MV, AU-X24MEV
AU-X18MV, AU-X18MEV
LED1

May 27, 2012 | Sharp Heating & Cooling

1 Answer

I have a contractor that wants to install a 36000btu outdoor unit(model # mh080fxca4a) and two indoor 18000btu indoor units(model #mh052fnca). What would be the output of the outdoor unit? The contractor...


Yes it rated for a maximum out put of 36,000 btu (3 ton) with the right indoor fan coil units which based on the model numbers should give the 36,000 btu's combined when both fan coil units are on, otherwise 18,000 btu's (1.5 ton)per fan coil.

Aug 23, 2011 | Samsung Heating & Cooling

1 Answer

I have a samsung air con model FSO9A1VE the indoor unit is working but the outdoor unit is not the air con may have been ruuning for some time as i was not home


Actually, it's not advised to run the a/c when occupant is out for long time. Check in out door unit for power. If not check thermostat setting. Keep +3 degree minimum for cool, than room temp.And -3 for heat than room temp. If power not in out door, check indoor out put out. No power goes to out door, repair/replace PCB.If power in indoor out put and not in out door, replace wire connected in between indoor and out door. Thanks.

Feb 03, 2011 | Samsung Heating & Cooling

2 Answers

What does error code p8 mean


P8 means Abnormality in outdoor unit.
Check:
1) Wrong wiring of indoor/outdoor
connecting wire
2) Reversed phase
3) Protection device is working
4) Damaged outdoor coil thermistor

Solution:
1) Check the indoor/outdoor connecting wire.
2) Change the connection of electric wiring.
3) Check the protection device.
4) Measure the resistance of the outdoor coil thermistor.
If the resistance is normal, replace the
outdoor controller board

Hope, helpful.

Feb 03, 2011 | Mitsubishi Heating & Cooling

1 Answer

Indoor unit freezing up


THE OUTDOOR UNIT HAS A CONTACTOR WITH THE CONTACTS WELDED TOGETHER THE CONTACTOR CONNECTS TO THE COMPRESSOR AS IT TYPICALLY PULLS A SURGE OF 20 -30 AMPS OR MORE..WITH THE INDOOR UNIT IN FAN ONLY THE COMPRESSOR SHOULD NOT BE RUNNING. THE CONTROL WIRES GOING TO THE UNIT HAVE 24 VOLTS TO THE CONTACTOR TO PULL IN THE CONTACTS TO SUPPLY 220 TO COMPRESSOR.

Mar 09, 2010 | Heating & Cooling

1 Answer

Outdoor unit fan always runs even when indoor unit is off. I have disconnected all control wires from the headunit (at the outdoor end to rule out faulty signalling). The fan runs all the time, with just...


I have had this problem with a Fujitsu unit before. If the power is supplied to the outdoor unit first but unit is meant to have power supplied to indoor unit first, outdoor will only stop when power is cut off! In that case, you will have to run the power cable to the indoor unit first and then connect from appropriate terminal back to outdoor unit. (Often the indoor will stop outdoor unit by just cutting the power to it via use of a relay on the pcb.)

Jan 16, 2010 | Panasonic Heating & Cooling

1 Answer

Airforce 12000BTU Air Conditioner wiring problem


The outdoor unit should have 2 small wires connected to the contactor coil. This delivers the 24v "Signal" to energize the coil. The wire from the t'stat for cooling are usually yellow, in almost every case. When you put the t'stat in the cooling mode and set the temp lower than the room temp, the indoor and outdoor unit should come on. Check for voltage on the terminal block for 24 volts accross the yellow and common wire. Common could be ground on some handlers. If you have the 24 volts, then check for 24v on the 2 small wires (usually 18 to 22 gage wire) on the contactor coil. If no voltage, trace the 2 wires back to the indoor unit and see where they go. If they are the ones that are not attached, put one on the yellow wire terminal and the other on the common terminal. This will send power to the indoor unit and then piggyback to the outdoor unit. Do not remove the yellow and common from the terminal block. Don't be too concerned about the colors from the outdoor coil wires. Just make sure they are hooked up right. Good Luck and hope this gets it going.

May 14, 2009 | Heating & Cooling

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