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Troubleshooting
Service manual
133
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
Possible cause:
▪
Faulty or disturbance of the power supply (imbalance >10%),
▪
Power drop,
▪
Short circuit.
2
Perform a check of the inverter PCB A6P. See
Possible cause:
Faulty inverter PCB A6P.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
2.3.120 P2-00 – Refrigerant auto-charge interrupted
Trigger
Effect
Reset
Auto-charge function is
terminated before
finished.
Auto-charge operation
will terminate.
Push BS3 (return) button
once.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Check for objects near the indoor unit that may block the airflow. See
372].
Possible cause:
Airflow of the indoor unit is blocked.
2
Clean the air filters of the indoor unit(s). See service manual of the respective
indoor unit(s).
Possible cause:
Faulty or clogged air filter.
3
Adjust external static pressure setting for ducted type indoor units, if
necessary.
4
Restart refrigerant auto‑charge function. See installer reference guide for
more information.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
2.3.121 P4-01-04-05 – Fin thermistor abnormality on inverter PCB A3P
Main error code
Sub error code
Unit
P4
01
Main
04
Sub 1
05
Sub 2
Summary of Contents for VRV IV+
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