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Troubleshooting
Service manual
50
VAM350~200 EKVDX32~100A2VEB
VRV system air conditioner
ESIE22-07 – 2022.02
3.2.42 UE-00 – Communication abnormality with central controller
EKVDX-A and VAM-J8 units
Trigger
Effect
Reset
Transmission abnormality
with central controller.
Unit will stop operating.
Auto reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
If all indoor units display error UE-00
1
See "Error based troubleshooting" in the outdoor unit service manual and
proceed with the troubleshooting of this error code.
If ONLY 1 indoor unit displays error UE-00
1
Check if the indoor unit has an assigned group address. Set a group address as
needed. See installation manual of the remote controller for procedure to set
group address.
Possible cause:
No group address assigned to indoor unit.
2
Perform a power reset on the central controller and check if error is resolved.
3
Using the service monitoring tools, check the communication registers.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
3.2.43 UJ-34 – Capacity mismatch between VAM and DX module
EKVDX-A units
Trigger
Effect
Reset
Incompatible VAM and
EKVDX capacities are
installed together.
Unit will NOT operate.
Power reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Check for improper combination of units. See the combination table in the
Databook for more information. Change the installation with ONLY compatible
type units.
2
Check if the correct spare part is installed for the indoor unit main PCB. See
Indoor unit main PCB. Check that the correct capacity setting adapter is
connected to X23A of the PCB.
Possible cause:
Incorrect spare part PCB or incorrect capacity setting adapter.
draft – 07/02/2022 15:12
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