Fan Runs, AC Doesnt, Blinks 5 times

DuoTherm by Domestic-Fan runs, no cold air - iRV2 Forums

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Jan 22, 2012 - 12 posts - ‎4 authors Duo Therm by Dometic 13500 BTU air conditioning with ducting, furnace. I. ... If the fan runs but no cold air and the compressor feels like it is ...

A/C just stopped blowing cold.....any ideas??! - RV Forum

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Jul 27, 2008 - 23 posts - ‎6 authors We have run it continuos like this before without any troubles. Thanks for the help! ....When you switch the AC unit on, the fan runs, but the compressor doesnt fire up. You used to be able ... You can find Dometic here. Logged. Dometic Duo Them Air Conditioner Cycles
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Well I'm not sure what model unit you have but I found a manual online for the AirV series that has a 5 flash code. States that to be a compressor drive issue. If yours is an AirV series, call a technician. No help in the manual.

hello
1- you check thermostat .
2-maybe temp your house is below 26c.
3-you check fan condenser and evaporator .
4-maybe cut off low pressure system.

circuit board. look at board on outside heater box most boards control both , check for flashing light and count blinks , read chart on blower about the flashes. new boards around 120.00

Usually just listening closely will give you a rough idea where to look for problem. When you have the fan on and switch to cool, (with temperature turned down low obviously) do you hear any type of "moaning" sounds from AC unit, or see lights in RV dim slightly indicating that compressor is trying to engage? Is the breaker tripping when compressor tries to engage? Do you hear a "click" from AC unit when switched to cool? If none of that happens, then I'd start thinking thermostat, or compressor relay. Normally if it's a faulty capacitor, the compressor will try to engage but will make a "moaning sound" and usually trip the breaker due to excess current draw. Someone experience in electrical should be able to test relays etc, but whoever does work on it, should be aware that those capacitors, as well as hydro in general are very dangerous to work with. The ("zap",- Shock) that you can experience from a capacitor or hydro, can be fatal.

5 flashing is ' compressor drive' and check the high pressure, condenser fan motor capacitor for proper running

That blinking light may be the diagnostic light. Count the blinks next time it fails. Carrier units will have two different blinks depicting the error code such as one blink followed by a pause than 3 blinks giving you an error code of 13. Then look at the wiring diagram, it will have an error code chart telling you where to start with your diagnosis. You already know that if you remove the cover it erases the error code, so look thru the small window first.

check your breakers make sure when running unit this is the only thing on the breaker 15 to 20 amp be sure to keep a window cracked as well unit does freeze over so don't have all the way on cold

Switch OFF the circuit breaker of ac, after 5 seconds. Switched ON the circuit breaker. If this will appear again try to check the wiring connection of ac.

Hello rfrizzell,

My unit is giving me the same alarm. If you have found the solution, please email me at [email protected]

Thank you very much.