A6-22 - Unstable Fan Rpm; A6-28 - Airflow Rate Below Critical Threshold - Daikin VAM350J8VEB Service Manual

3 | Troubleshooting
3.2.9 A6-22 – Unstable fan rpm
3.2.10 A6-28 – Airflow rate below critical threshold
Service manual
28
draft – 07/02/2022 15:12
VAM-J8 units
Trigger
Fan PCB detects irregular
fan rpm signals.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Check the power supply to the indoor unit. See Power supply.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance),
▪ Phase missing,
▪ Power drop,
▪ Short circuit.
2 Perform a check of the indoor unit fan motors. See Indoor unit fan motor.
Possible cause: Faulty indoor unit fan motor.
3 Perform a check of the indoor unit fan PCBs. See Indoor unit fan PCB.
Possible cause: Faulty indoor unit fan PCB.
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.
VAM-J8 units
Trigger
The airflow is lower than
the legal limit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 This error can ONLY occur if VAM-J8 and EKVDX-A are installed together
where field settings are 28‑10=2 and 29‑15=2. If it's a standalone VAM-J8
make sure to perform correct field settings. See
Possible cause: Incorrect field settings.
2 Check that the ducting is compliant with the installation limits. See installer
reference guide.
Effect
Unit will NOT stop
operating.
Effect
VAM and EKVDX unit will
stop operating. Outdoor
unit connected to EKVDX
unit will stop operating.
Reset
Auto reset.
Reset
Power reset.
"5.8 Field settings" [ 4 83].
VAM350~2000J8VEB + EKVDX32~100A2VEB
VRV system air conditioner
ESIE22-07 – 2022.02