Flash Loading Controller Software

Controller software must be flash loaded when software has been revised. To flash load software:

  1. Turn the unit On/Off switch OFF.

  2. Plug cable from a portable computer with controller software into the data retrieval connector on the control box.

  3. Press one of the special functions keys to activate controller LCD display on battery power; or turn the Unit On/Off switch ON.

  4. Press and hold the “7” key and F1 key at the same time. LCD display will show “FLASHLOAD”.

    Note If the communications cable is defective or not connected to the download port, the controller will start in emergency mode and LCD display will show “EMERGENCY MODE”. Secure cable connection to proceed with flash loading of software.

  5. Start flash load program on portable computer.

  6. Flash loading of new software is complete when “FLASH LOADING” clears from the LCD display.

  7. The controller then checks the new software and loads the new control program into memory.

Note If the flash load procedure is interrupted or fails, the controller will continue to use the previous control program.
Note Installing new software does not change any configuration settings or the setpoint setting, or erase the data log currently stored in the controller.

Model CRR DF - MP3000/MP3000a, Super Freezer "Error message list"

# Error Message Controller Action
1

Power Error, Check 20A Fuses Indicates:

  • One or more phases are missing

  • Compressor is able to draw amps on allphases while heater lacks amps on one or more phases

  • Controller activates alarm 18

  • Controller will try to restart unit after 60 minutes.
10

Cond probe found, please change type Indicates:

  • Controller is set for CRR40 DF and start-up is initiated on a KVQ/CRR PS, CSR PS or CSR Magnum unit. Correct by turning Un it On/Off switch Off. Then set controller software switch to correct position. See controller software selection.

  • None. On CRR40 DF units, condenser sensor input must be left open.
11

Scroll Compressor, High Temperature Indicates:

  • Compressor stops because discharge temperature is above 140 c (284 F). Message remains in display until discharge temperature decreases to normal.

  • Controller clears message after compressor start up.
12

Scroll Compressor, Low Pressure Indicates:

  • Low pressure cutout switch is open.•   Possible causes include stepper motor valvewill not open, warm gas bypass valve wil not open, low refrigeratn charge, defective low pressure cutout switch, open circuit, etc.

  • Controller activates Alarm 31 after 5 minutes. 

  • Controller clears message after compressor start up.
13

R134a Compressor, High Temperature Indicates:

  • Compressor stops because discharge temperature is above 130 C (266 F). Compressor remains Off until discharge temperature decreases to 90 C (194 F)

  • Controller actrivates Alarm 56.

  • Controller clears message when compressor temperature decreases below 130 C (266 F). However, compressor remains off until discharge temperature decreases to 90 C (194 F).
14

Evaporator High Temperature Switch Open Indicates:

  • Controller disables electric heaters due to open high temperature switch circuit.

  • Possible causes include evaporator temperature over 54 C (130 F), defective heater, defective evaporator overheat switch, open circuit, etc.

  • Controller clears message when hightemperature switch closes.

  • NO alarm is set until Controller determines that heater current draw is too high (alarm 10), unit current draw is too high (alarm36), or defrost time is too long (alarm 20).
15

R134a Compressor Fault

  • Feedback from 134a Compressor is Missing

  • Check to be certain 134a compressor is running

  • Check continuity through 134a auxiliarycontactor on Main Relay Board plug J12.
Parent topic: Microprcessor Controller