UMD V3 Installation Manual - Remote Control
13 November 2018
Page
29
of
39
CoolTrax Interface Plug
If these two measurements are correct, connect the fridge interface cable to the UMD COMM 2 Port and power ON the
UMD (If not already ON).
If the Fridge cable was connected to a UMD that was OFF and then powered ON after the connection was made, the
UMD should sense the fridge within a couple of minutes and the fridge light on the UMD should come ON RED.
Note:
the recommended firmware revision for the HDMI on Carrier Advanced Controller fridges is
Revision 04.12. This
works on European Vector and American versions of the fridge and allows for remote two-way control of
each. Sometimes if the firmware is a lower revision the fridge interface can fail and an upgrade is
recommended.
Fault: The Reefer Will Not Turn On with the Local Switch
After fitting the Cooltrax System the Reefer will not turn on normally using the local On/Off Switch
Actions:
If the Reefer has a standard controller and you have upgraded the EPROM check that the EPROM is seated
correctly
Check wiring looms and make sure you haven’t accidently unplugged a cable while looking for the Serial Port
Plug which is often tucked behind the controller on older model Reefers.
Check Battery Voltage on the Reefer Battery if it is below 12.3DCV you will need to charge the battery as it will
not start the reefer at this level.
Fault: The UMD will not Power On or is running on Internal Battery
If there is no Power to the UMD the Green Power LED at the bottom LH corner of the LED array will be off.
Note: If the UMD has been previously powered up for a reasonable time it will run on internal battery for 3
hours or so (if battery is fully charged). In this case the Red Battery LED will be illuminated on the bottom RH
side of the LED array.
Actions: