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Troubleshooting
Service manual
44
VAM350~200 EKVDX32~100A2VEB
VRV system air conditioner
ESIE22-07 – 2022.02
1
Check the error history to see if R32 leak detection sensor was replaced, see
19]. If replaced, check if timer was reset during sensor
replacement. Reset as needed.
Possible cause:
R32 leak detection sensor was replaced without timer reset.
2
Check the operation time of the R32 leak detection sensor of the faulty indoor
unit. If operation time approaches 10 years, order a new R32 leak detection
sensor and replace at the next maintenance interval.
Possible cause:
R32 leak detection sensor operation time approaches
maximum value (10 years).
3
Perform a check of the R32 leak detection sensor of the faulty indoor unit. See
R32 leak detection sensor.
Possible cause:
Faulty R32 leak detection sensor.
4
Perform a check of the indoor unit main PCB. See Indoor unit PCB.
Possible cause:
Faulty indoor unit main PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
3.2.33 CH-10 – R32 leak detection sensor replacement to confirm
EKVDX-A units
Trigger
Effect
Reset
The R32 sensor detected
disconnection between
indoor unit main PCB and
R32 sensor.
Indoor unit will stop
operating.
▪
Set
field
setting
25‑14‑01 to 02 on the
remote controller of the
faulty indoor unit.
R32 sensor replaced and
power reset after error
A0-11
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Check wiring (insertion and continuity) on connector X41A on the indoor unit
main PCB and connector CN1 on the PCB of the R32 leak detection sensor. See
63].
Possible cause:
Faulty or damaged wiring between indoor unit main PCB and
R32 leak detection sensor.
2
Check the error history for error code A0-11, see
19]. If
A0-11 is found, R32 leak detection sensor was replaced after this error and
power reconnected. Check if field setting 25-14=02. Correct if needed, see
Possible cause:
R32 leak detection sensor was replaced without adjusting
field setting 25-14.
3
Perform a check of the R32 leak detection sensor of the faulty indoor unit. See
R32 leak detection sensor.
draft – 07/02/2022 15:12