Troubleshooting An Advent Air Replacement AC Unit That Keeps Freezing Up

Question

Question:

I purchased this 15k unit and replaced an old 13k Dometic unit. Pug a play as said ,no issues. Rv is located in south Texas coast problem is at night the unit has frozen up twice in three trips. Old unit has never froze up and was working when replaced. The reason for changing was due to rusted pieces under cover. Thanks William

asked by: William W

0

Expert Reply:

Hi William,

Do you have the freeze sensor from your previous unit connected to the coils of the # ACDOM150? If not the system won't be able to place itself in defrost mode and will continue to keep freezing up.

expert reply by: Kevin C

0

Chris R.

2/3/2026

Hey William, did reconnecting the freeze sensor to the coils on your 15k Advent Air unit stop it from freezing up at night? Knowing how that worked out could really help others running into the same issue.

Answer 1

Yes, you have the Advent Air RV Air Conditioner w/ Air Distribution Box, Start Capacitor, and Heat Strip, #ACM150CH. This is not an issue that we get often but it does sometimes occur with most any unit, when this happens it is frequently due to air…

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Answer 2

Hey Kirk, so the freeze sensor of an RV AC unit is designed to be installed in the heat exchanger of the unit. This is the portion that looks like a radiator.

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Answer 3

Since you have a start capacitor, your power should not be a problem; the most likely issue with the Advent Air RV Air Conditioner #ACM150 is "short cycling" and there are a couple of reasons why that might happen. Most often, the issue is…

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Answer 4

I attached a diagram for the thermostat wiring of the Advent AC Unit part #ACM135B for you to check out.

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Answer 5

Thank you for your purchase from etrailer of the Advent Air RV Air Conditioner #ACM150. What is happening is called short cycling and there are a couple of reasons why that might happen. Most often, the issue is with the thermostat reading the…

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Answer 6

No, they won't work together Tony. The new R32 Advent Air RV Air Conditioner item #ADV86SR won't work with Dometic CT Single Zone Thermostat item #DMC83ZR. You'll need to stick with an Advent thermostat. Please note that the Advent Air RV…

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Answer 7

Hey Cody, The Air Distribution Box #ACDB actually doesn't have a freeze sensor like the #ACRG15 does. This only has a copper wire poking out of the back of the controller as a temperature wire to tell the system to kick according to the…

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Answer 8

To reset the thermostat of your Advent Air RV Air Conditioner System #ADV64FR you'll need to complete the following steps: Start with Thermostat in Off mode. Press and hold both the mode and fan button at the same time in the Off mode. Continue…

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Answer 9

Your Furrion Chill Replacement RV Air Conditioner freezing only after a few hours of use is probably due to the freeze sensor not being installed correctly to the cooling fins. The freeze sensor detects when the unit starts to freeze and the censor…

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Answer 10

Hey Andrew! Yes, Furrion does have a Chill Cube model with a heat pump. This was actually just released for aftermarket sale. You will need a complete system to make the switch, new R32 units aren't backwards compatible with old R410A systems.…

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Answer 11

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 12

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Troubleshooting An Advent Air Replacement AC Unit That Keeps Freezing Up

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