Carrier TRANSICOLD PrimeLINE 69NT40-571-001 Operation And Service Manual Download

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7–30

7.27 Controller

7.27.1

Handling Modules

CAUTION

Do not remove wire harnesses from circuit boards unless you are grounded to the unit frame

with a static safe wrist strap or equivalent static drain device.

CAUTION

Remove the controller module and unplug all connectors before performing any arc welding

on any part of the container.

The guidelines and cautions provided herein should be followed when handling the modules. These precautions

and procedures should be implemented when replacing a module, when doing any arc welding on the unit, or when

service to the refrigeration unit requires handling and removal of a module.

1. Obtain a grounding wrist strap (Carrier Transicold P/N 07-00304-00) and a static dissipation mat (Carrier

Transicold P/N 07-00277-00). The wrist strap, when properly grounded, will dissipate any potential static

buildup on the body. The dissipation mat will provide a static-free work surface on which to place and/or

service the modules.

2. Disconnect and secure power to the unit.
3. Place strap on wrist and attach the ground end to any exposed unpainted metal area on the refrigeration

unit frame (bolts, screws, etc.).

4. Carefully remove the module. Do not touch any of the electrical connections if possible. Place the module

on the static mat.

NOTE

The strap should be worn during any service work on a module, even when it is placed on the mat.

7.27.2

Controller Troubleshooting

For reference of the controller location in the control box, see

Section 3.1.7

For a description of the controller software, see

Section 4.2

See function code Cd74 (see

Section 4.9

) for controller self diagnostic test.

7.27.3

Loading Controller Operational Software from a USB Drive

1. Place the Start-Stop switch (ST) to “I” to turn the unit On. Wait for controller information to be displayed.
2. Insert the USB flash drive, containing controller software, into the controller micro USB port.
3. Press the ALT. MODE key on the keypad.
4. Use the Arrow keys until “USb” is displayed, then press the ENTER key.

NOTE

If “no USb” is displayed, wait up to 15 seconds for this message to be replaced with a different message. If “no

USb” continues to be displayed, remove and insert the USB flash drive and repeat steps 3 and 4.

5. Use the Arrow keys until “UP LoAd” is displayed, then press the ENTER key.
6. “LOAd XXXX” is now on the display. If more than one ML5 software revision file is on the USB flash drive at

the root level, press the Arrow keys until the desired revision is displayed.

7. Press the ENTER key to load the software to the controller.
8. When “PULL USB NOW” is displayed, remove the USB drive from the port.
9. The following messages will appear to confirm successful programming: “LoAd SoFt” and “Pro SoFt” will

each appear for several seconds and then “Restart” appears briefly. Then, the controller restarts.

10. As the controller starts up, the message “Cd 18” displays the new software loaded and then “Pro donE”

appears.