CTM U-Board - Control Board for AC Unit - Fits OEM U Board 223100502 / 223100504

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CTM U-Board - Control Board for AC Unit - Fits OEM U Board 223100502 / 223100504

(4) Customer reviews

CTM U-Board - Fits Dometic U Board Control Board for Marine AC used in direct-expansion, self-contained, and chiller systems. The U Board works with either 6 or 8-pin cables, and most Dometic, Cruisair, and Marine Air displays / controls. New board.

CTM Part Number: 40001C
Fits Dometic Part Numbers: 223100502 / 223100504

Reference: 40001C / 223100502

Available Online: 16

Ft. Lauderdale: 10

Miami: 10

Regular Price: $349.00

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CTM Universal Control Board for Dometic, Cruisair, and Marine Air Units - 40001C - U Board Control Board for Marine AC Units - Dometic AC Control Board Replacement

Dometic AC Control Board Replacement

The CTM U Board is a Direct Replacement for Dometic Control U Board Marine AC Control Board used in direct-expansion, self-contained, and chiller systems. The U board works with either 6 or 8 pin cables, and most Dometic, Cruisair, and Marine Air displays/controls.

CTM U-Board Compatibility


Smart Touch (Click Here)	SMXir (Click Here)	Elite II (Click Here)	Passport I/O (Click Here)

8-Pin Cable	6-Pin Cable	8-Pin Cable	8-Pin Cable

Additional Compatible Displays:

Q-Logic: Qht, Q3
SMXII: SMXII AB (Special Adapter needed to connect control to new Dometic U-board Click Here to View)

U-Board is not compatible for:
CAN Bus kits: 763100027 and 763100061

How To Identify Systems With The U-Board

A way to identify a unit with the new U-board, is by checking the unit's model description: The letter “U” after the BTU number means the unit contains the new U-control board. For example: DTU16 = 16,000 BTUs.

CTM U-Board Dimensions

control board for marine ac unit

How to Install the U-Board?

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CTM U-Board Specs

1.19MB

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8-Pin Display Cable - Select 6 ft to 75 ft

SUB-031-X06

In Stock: 4

Regular Price: $21.93

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6-Pin Display Cable - 7 ft to 100 ft

SUB-CXP-X07

In Stock: 36

Regular Price: $25.73

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Passport I/O Control - Bezel Included

ASY-402-X03 / 222000245

Regular Price: $183.28

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Elite II - OEM Control / Display Only

314-09-GR / 222000234

In Stock: 20

Regular Price: $233.26

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SMXir OEM Keypad / Control Display - 3/4 Door - Black

SMX IR / 502-09

In Stock: 13

Regular Price: $232.10

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Smart Touch Display / Cabin Control (Micro Air EasyTouch OEM)

ASY-389-X50

In Stock: 20

Regular Price: $306.58

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(4) Customer reviews

100% of customers recommend this product

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Control board for Dometic 16k marine A/C unit

2025-08-05 15:07:15

By Bill

My control board needed replacement. Forget trying to get in touch with Dometic directly. Found this board on the web, call Citimarine, sent them a picture of my board, they promptly sent me the correct replacement.

All Aboard

2025-07-17 00:04:57

By Tom Mallonee

This board took care of my failed Dometic AC board that had its micro contractor for the compressor burn its contacts. The contractors on these boards are rated to handle the units load but my compressor starting capacitor failed and caused additional load on the previous board. So far, this replacement board with about (50) hours on it is up to the task.

product

2024-12-04 02:33:05

By iqbal

good

Perfect replacement

2024-09-22 13:26:03

By Russ

My control board shorted out from a water leak so ordered this replacement. It was very easy to swap out the old for the new. I simply shut off power to the system, then moved the wires one at a time from the old board to the new. That avoided any confusion or need to do special marking. Then the new board easily screwed into place. The whole job took 20 minutes.