Carrier ML3 Container Electronic Repair Service

Product Information

Specifications

• Release Date : March 19, 2024
• Model Number : 12-00842-XX
• LED Model Number : 12-00909-XX

Product Usage Instructions

When the Reefer is ON

When the Reefer is OFF

periodically)

If there are no LEDs for more than 2 minutes or a solid red LED,
follow these steps

1. 1. Confirm container ID, model number, and telematics device part number with the Container Owner.

2. Check and update the software version of the controller if needed.
3. Verify the model number of the unit and update if necessary.
4. Check power supply to the controller and ensure correct voltage.

Frequently Asked Questions (FAQ)

• Why is the device not showing any LEDs?
  

  • If the device is not showing any LEDs, it could be due to a communication failure between the controller and the telematics device. Follow the steps provided in the manual to troubleshoot this issue.

Number: TL002 – 2024
Subject: ML3, ML5 Telematics Quick Diagnostic Guide
Released: March 19, 2024

Carrier’s telematics solutions allow users to monitor their units remotely using telematics software. Under normal operation, the device will illuminate blue or green, depending if the unit is running on power or battery and if it has Long Range (LoRa) or Cellular communication coverage. When diagnosing the connection to a unit, it is important to determine if the issue is hardware or software related. You can observe what the module is doing based on the LED color and state as described in the tables below. See the next page for no LEDs or LED blink for extended periods of time.

When the Reefer is ON

| COLOR| STATE| MEANING

---|---|---|---
1| WHITE| BLINKING| Searching for Reefer Controller Communication
2| WHITE| SOLID| Reefer Communication Found. Lit for 10 seconds
3| RED| SOLID| Reefer Communication Failed (Check Harness Connections)
4| GREEN| BLINKING| Searching for Cell Coverage
5| GREEN| SOLID| Device has Cell Coverage
6| BLUE| BLINKING| Searching for LoRa Coverage
7| BLUE| SOLID| Device has LoRa Coverage

When the Reefer is OFF

| COLOR| STATE| MEANING

---|---|---|---
1| BLUE| VERY SHORT BLINKING| Device is active (it will report a message periodically).
2| None| None| Device out of battery, turn reefer on for >1 hour to charge

Green or blue blinking LEDs for more than 5 minutes
If the LED is blinking green or blue for extended periods of time it may be due to poor coverage in the area. If a unit is being diagnosed, ensure the telematics module is not obstructed by any large walls or move the container to an area that is more open. Check to ensure the area has cell coverage by referring to a personal cell phone. If the area is open and has good cell coverage test a new telematics module by following step 5 in the instructions below.

No LEDs for more than 2 minutes or solid red LED
If there is no LED for more than 2 minutes, then the communication between the ML3/ML5 controller and Telematics device is unsuccessful. This could be due to an incomplete cable connection or a defective telematics device. Follow the steps below

1. Confirm with Container Owner container ID, model number, and telematics device part number.

2. Confirm the software version of the controller with Cd 18. The controller software version is equal to or higher than 6322 for ML5 PrimeLINE, 5383 for ML3 PrimeLINE, 5167 for ThinLINE, and 5708 for NaturaLINE. If not, upload the latest revision the software. NOTE: Check with the container owner before uploading any software.

3. Confirm the Model number of the unit with CD 20. It should match the model number listed on the unit’s nameplate. If it does not match contact the owner of the container to verify the model number. It is recommended that the new model number be documented on the serial plate for future reference.

4. Check Power Supply to controller with Cd 07 and Cd 08. It should be 400-500 VAC at 57.5-62.5 Hz or 360- 460VAC at 47.5-52.5 Hz.

5. Turn off the unit and circuit breaker. Check power connections to the telematics device:

   • TRX2 on the controller transformer, behind the filter in the control box.
   • QC on the ML5 controller and QC1 on the ML3 controller.
   • If there is a telematics connector, check its connections as well.
   • Verify connections are seated and not loose.
   • If the connections are loose, seat them properly and turn the unit back on and see if the telematic device’s LEDs light up.
     If the connections are fully seated, disconnect
     the telematics connector, and turn the unit on.
     Verify there is 20-24VAC across the connection. If voltage is ok, turn off the unit and continue to step 5.

6. Check the Telematics module harness is fully seated in the device. This will either be a screwed-in plug in the center of the module or plugged into the left-hand side of the module. If the connections are fully seated, keep the unit off and continue to step 6.

7. Locate the fuse holder along the length of the connection of the telematics unit. Remove cover and ensure the fuse is not open with ohmmeter. If the fuse is ok, proceed to step 7, else replace fuse.

8. Check the other connections of the telematics device to the controller.

   • For ML3 units, check connections at MA and the MA passthrough.
   • For ML5 units check the connections at RA and BB.
     If the connections are loose, seat them properly and turn the unit back on and see if the telematic device’s LEDs light up. If the connections are fully seated, keep the unit off and continue to step 8.

9. Swap LYNXFLEET device for a new one with the same part number and check LED pattern for connectivity. If the device’s LED turns solid white, then the original LYNXFLEET device is defective. If new device does not illuminate LED, reverify connection.

10. If new device does not illuminate LED upon connection or is still not appearing on customer interface after a reasonable amount of time, reconnect the original LYNXFLEET device and contact the container owner or telematics service provider for further troubleshooting.

NOTE: The non-provisioned telematics power connector (CIB wire kit) is PN 22-01713-35.
Contact your assigned Carrier Field Service Manager prior to any replacement
For clarity it is recommended that this document be printed in color

Follow your company’s standard Lockout/Tagout procedure for working with electrical components.

Service Engineering / Container Products
Please circulate copies of this bulletin to all service and management personnel as soon as possible.

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