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Carrier Air V roof mount with remote. Does not cool. On light blinks 5 times then repeats blink code. What does the 5 blink code mean?

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  • Anonymous May 01, 2009

    Same problem--Carrier Air V doesn't work--won't turn on. Green indicator light blinks 5 times, then off.

    Any help?


  • Brian Conley
    Brian Conley Apr 29, 2013

    I had the same issue. I spoke with Camping World and was told to replace the TOP unit of my camper. Dometic told me the right unit with the right conversion kit so I could continue to use my interior AIR V portion. Installed today, very easy to do. Still having the same issue.

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We have the same problem as of this morning . . . don't have the fix yet, but have located (2) manuals that I will enclose the links for. The 5 flashing green lights is mentioned in the "Service Manual" in Section 2 "Troubleshooting" with 5 possible remedies. Manual http://www.transportaircon.carrier.com/Files/Bus/Local/US-en/T298.pdf and Parts List http://www.transportaircon.carrier.com/Files/Bus/Local/US-en/T298PL.pdf We're under warranty so will take our RV in ASAP

Posted on Sep 05, 2009

  • mavis1957 Sep 05, 2009

    Additional info to my first post . . . the 5 flashing green lights (also known as priority error code 4) is "Compressor Drive Malfunction". The only allowed modes you should be able to get during this error is the FAN and the FURNACE (propane). Found that in the service manual under Self-diagnostics Function Table 2-1.

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This means....


The system has locked out due to "Compressor

Circuit" being interrupted for abnormal reason

during operation. This can be caused by power interruption

or voltage drop (Brown--Out). The

electronics monitors the voltage to the unit and will

lock--out for safety. To 're--set", disconnect the 12

VDC from the electronic controls for 15 seconds and

re--connect. If the alarm comes back in, check the 115

vac with ampmeter to determine unit amp draw (with

compressor and fan running) is within specifications

according to unit model.

Posted on Feb 02, 2013

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Often the legend for the code is located on the indoor panel close to the power and refrigerant lines. (I'm going to say what Ive seen now) Right hand side facing the indoor unit is the general side its on but yours may be different because I believe the lines and electrical can be installed on either side depending on needs of the application. If it has a plastic cover a few Phillips screws out and the cover will come off.

Wish I had more information or a pic and or a model number although its not a sure thing, maybe I could help you out better.

If this helps you please grade me accordingly and GOOD LUCK.

Posted on Mar 03, 2009

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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..


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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.

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My unit is giving me the same alarm. If you have found the solution, please email me at danielabrewster@yahoo.com

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Thank you. there are some other signs i don't know about.


The black triangle means AUTO, means the fan speed adjust by itself from high-mid-low speed depending in room temperature but the unit is cooling for this function the same COOL mode. Plasma is in the remote control but it never mention in the manual.
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