Remote Controller Air Thermistor Abnormality; U5-04 - Communication Abnormality Between Indoor Unit Main Pcb And Remote Controller - Daikin VAM350J8VEB Service Manual

3.2.34 CJ-00 – Remote controller air thermistor abnormality
3.2.35 U5-04 – Communication abnormality between indoor unit main PCB and remote controller
VAM350~2000J8VEB + EKVDX32~100A2VEB
VRV system air conditioner
ESIE22-07 – 2022.02
Possible cause: Faulty R32 leak detection sensor.
4 Check if any external (foreign) vapor substance influenced the functioning of
the R32 leak detection sensor. Repair as needed.
Possible cause: External (foreign) vapor substance reacted with R32 leak
detection sensor.
5 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.
EKVDX-A units
Trigger
Remote controller air
thermistor read‑out is out
of range.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Clear the error history of the remote controller. See operation manual of the
remote controller for detailed information.
2 If error is still active, replace the remote controller. See Remote controller
user interface.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
EKVDX-A and VAM-J8 units
Trigger
Transmission abnormality
between indoor unit main
PCB and remote
controller.
Effect
Indoor unit will continue
operating, using indoor
unit air thermistor as
input.
Effect
Unit will stop operating.
draft – 07/02/2022 15:12
3 | Troubleshooting
Reset
Auto reset.
Reset
Auto reset.
Service manual
45