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How To Install The Advent Air RV Air Conditioner System With ACTH12 Thermostat  

Question:

I installed a advent acm135 rooftop split unit on my trailer i have a advent arth12 thermostat will this work on my unit if so how do u wire it up

1

Helpful Expert Reply:

If you have the ACTH12 then you should also have the Air Distribution Box # ACRG15 which will have a control box for your wiring from the rooftop unit # ACM135 and the thermostat. This air distribution box and thermostat will wire up exactly the same as the standard air distribution box # ACDB.

I've attached the wiring diagram for each part of this system to help you with this installation.

expert reply by:
1
Kevin C
ACTH12 Wiring Diagram
ACTH12 Wiring Diagram
(click to enlarge)
Advent Air Wiring Diagram
Advent Air Wiring Diagram
(click to enlarge)
Leo profile picture

Leo

7/16/2024

I did the ACRG15/ACTH12 upgrade several years ago and love it, especially for controlling the AC. My question is this: Does Atwood or another RV equipment manufacturer make a Smart Thermostat to upgrade the ACTH12? I would need a smart thermostat that communicates over the Adata and Bdata digital lines. Thank you!

KevinC profile picture
Etrailer Expert

Kevin C.

7/18/2024

@Leo Unfortunately the Advent system isn't really compatible with other systems so at this time there just isn't the compatibility available.

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