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Troubleshooting
Service manual
24
VAM350~200 EKVDX32~100A2VEB
VRV system air conditioner
ESIE22-07 – 2022.02
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
Check for excess water level in the drain pan. Empty the drain pan and correct
installation of drain piping as needed. See indoor unit installation manual for
more detailed information.
Possible cause:
Excess water in the drain pan and/or incorrect installation of
drain piping.
3
Perform a check of the float switch. See Float switch.
Possible cause:
Faulty float switch.
4
Perform a check of the drain pump. See Drain pump.
Possible cause:
Faulty drain pump.
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.
3.2.5 A3-08 – Drain pump connector open
EKVDX-A units
Trigger
Effect
Reset
Drain pump NOT
detected.
Unit willl stop operating.
Power reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Perform a check of the drain pump. See Drain pump.
Possible cause:
Faulty drain pump.
2
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.
draft – 07/02/2022 15:12
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