Controller Lockup Issue

Some MP4000 controllers with 2.5.4.0 software are not restarting while changing power sources without turning the unit off. If a controller is found with no display and unit not running, follow this procedure.

  1. Unplug the unit or turn OFF the main circuit breaker in the control box.

  2. Disconnect the battery found on the back side of the controller.

  3. Wait 30 seconds then plug in the battery.

  4. Plug in unit or turn the main CB back ON.

  5. Turn unit ON by pressing the ON key.

  6. Controller will now restart.

Install MP4000 software (3.1.0.0 or later) in the controller before releasing unit. If the unit has 2.5.4.0 software or older, install 3.0.0.0 software before loading 3.1.0.0.

Note The latest software can be found on the Thermoking.com website under iService/Global Marine Solution Info Central/Software Updates/MP4000/CM4000 Load to SD Card.zip. Download the zip file to your computer to unzip it, DO NOT unzip from the website.

In order to load version 3.1.0.0 or later software, the MP4000 controller needs to have 3.0.0.0 software installed first. Load to SD Card file contains both 3.0.0.0 and 3.1.0.0 or later software.

If the controller has 3.0.0.0 software installed, insert SD card to load 3.1.0.0 or later software.

If the controller has 2.5.4.0 or older software, insert SD to load 3.0.0.0 software. Remove SD card and wait for the unit to shut down, restart, and auto configuration is completed. Reinsert SD card to load 3.1.0.0 or later software.

Parent topic: Operating Instructions MP4000