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Qht Q-Logic Control

Digital Control for Direct Expansion & Tempered Water Air Conditioning

The Qht keypad/display is an elegant, panel-mount design that works with the Q-Logic Control System and operates Cruisair Direct Expansion (DX) and Tempered Water (TW) air conditioning systems.

It offers all of the standard operational and safety features required for marine A/C systems, and includes some exciting new features and conveniences.

Optional CAN-bus support puts the air conditioning system onto the ship's network.


  • The Qht can replace SMXht displays, and has the exact same size and appearance. The Qht supports both Vimar® Idea and Gewiss® Playbus Euro-styled bezels in a wide variety colors.
  • Inside Temperature Sensor (TSEP) and display cable (CXP) are the same as used with the current SMX platform.
  • Easier menu-based programming.
  • Smarter error/fault codes.
  • Better serviceability (separate off-board compressor triac).
  • Optional outside temperature display is available with an additional TSEP sensor.
  • Optional humidity sensor/inside temp sensor available.
  • Optional electric heat package can be added.
  • Optional support adapter available for Dometic’s WhisperCool DC fan air handlers.
  • Optional support for CAN-bus network interface.

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