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Troubleshooting
Service manual
52
VAM350~200 EKVDX32~100A2VEB
VRV system air conditioner
ESIE22-07 – 2022.02
To solve the error code
1
Check the VAM-J8 indoor unit for error code A6-28. See
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
3.2.47 UJ-38 – VAM unit has A6-29 error
EKVDX-A units
Trigger
Effect
Reset
VAM unit has A6-29 error. Unit will stop operating.
Power reset.
To solve the error code
1
Check the VAM-J8 indoor unit for error code A6-29. See
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
3.2.48 60-00 – External protection device activated
VAM-J8 units
Trigger
Effect
Reset
Input signal JC‑J1 on
terminal X2M is closed
and field setting 28-8=2 or
28-8=3.
Unit will continue
operating
Auto reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
If wiring connected to JC‑J1 of X2M terminal of the indoor unit, check correct
connection and continuity of the wiring. See
Possible cause:
Faulty or damaged wiring between JC‑J1 of X2M terminal of
the indoor unit and external device.
2
Check if the field setting 28-8 is correctly set according to the installation. See
Possible cause:
Incorrect field setting.
3
Perform a power reset. If the error disappears and is raised again after a
while, check for the presence of an external source causing electrical noise.
See External factors.
Possible cause:
External source may cause interference.
4
Perform a check of the indoor unit main PCB. See Indoor unit PCB.
draft – 07/02/2022 15:12