MAQ Replacement Reference Document

September 5, 2019

Micro-Air MAQ replacement board

This board replaces the Cruisair / Dometic Q-logic board. OEM boards came with two different

software configurations, one for DX or self-contained systems and one for tempered water or air

handler applications. This one board replaces them both. Remove JP1 (CW ENABLE) to set the software

for a tempered water (air handler) system.

Other differences are listed in the pictures below. Sensor, pressure switch, and display

connections, as well as mounting is exactly the same as the board it replaces.

J12

This connection must only be used for fan L2. It

improves the fan electrical noise filtration which can

be a problem in some systems. Do not connect valve,

compressor or pump L2 here or the board may be

damaged.

PAGE 1
Micro-Air MAQ replacement board This board replaces the Cruisair / Dometic Q-logic board. OEM boards came with two different software configurations, one for DX or self-contained systems and one for tempered water or air handler applications. This one board replaces them both. Remove JP1 (CW ENABLE) to set the software for a tempered water (air handler) system. Other differences are listed in the pictures below.
PAGE 2
L1 moved over TW/ CW (air handler) Enable Connect these connections to screw terminals Rev 1.