With Display Cover Plate is Discontinued

Product has been discontinued. Please send us a message or click the below button for better replacement.

SMX II BB (For Chillers) Keypad Display. Directly replaces the popular Dometic / Cruisair SMX II keypad display. Completely new designed and manufactured board. Fully compatible with original Dometic power (logic) boards. For Chiller Systems only.

SKU: N/A Category:


Fully Compatible Replacement for Dometic SMX II Keypad / Display – Micro Air ASY-423 – For Chiller Systems


Replaces the SMX II Control from Dometic / Cruisair

*Shown here with display cover
  • Completely new designed and manufactured board
  • Fully compatible with original Dometic / Cruisair power (logic) boards
  • Directly replaces the popular SMX II AB marine A/C keypad display
  • 4-conductor cable with a Molex connector on each end
  • Available in both Direct Expansion DX and TW Chiller System models
  • Identical operation as original Dometic SMX II Keypad, wall cutout-compatible

Specifications / Notes

The SMX II BB display has a noncorrosive ABS cover and soft-touch membrane switches. All keys are clearly labeled, making operation simple. The large, easy-to-read digital display shows set-point or cabin temperature and also is used to give information on operating parameters and fault code warnings. Small LEDs are used to indicate system status.

For normal operation, it is only necessary to turn the system on and select the desired set-point. The user can select cooling only, heating only, or automatic changeover between cooling and heating. Fan speed is automatically controlled, or can be manually set. Factory settings may be changed, with user-programmable commands, permitting the boat-owner to fine-tune the system for personal preferences. Programming modes are accessed by pressing special combinations of keys.

Programmable features Include A/C line voltage calibration, temperature calibration, compressor restart time delay, continuous or intermittent fan operation, low and high fan speed adjustment, compressor response differential, Fahrenheit or Celsius temperature display The system’s nonvolatile memory retains all user-programmed settings, even when the power is switched off.

*Note: The TW model has no screen printing on the button overlay.