Daikin VRV IV+ Service Manual page 185

2.3.198 E-1 – Refrigerant leak check is not possible
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Set field setting 2‑5 of the outdoor unit to 1 to start the indoor units
connected to that outdoor unit on forced fan operation, see
4
settings" [ 455]. If any of these indoor units is NOT operating, check the
indoor unit(s) that have power black‑out or malfunctioning PCB. See service
manual of the respective indoor unit for more information.
Possible cause: Power black‑out or malfunctioning PCB on indoor unit(s).
2 Perform a communication reset of the F1‑F2 transmission, see
circuit" [ 4 356].
3 Check field setting 1‑10 to count the indoor units, see
4
settings" [ 455]. If less indoor units detected than it should be, check the
indoor unit(s) that have power black‑out or malfunctioning PCB. See service
manual of the respective indoor unit for more information.
Possible cause: Power black‑out or malfunctioning PCB on indoor unit(s).
4 Check if the power supply is conform with the regulations. See
4
circuit" [ 356].
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance >10%),
▪ Power drop,
▪ Short circuit.
5 Check the F1‑F2 transmission line between the indoor units and outdoor unit.
See "4.1 Electrical circuit" [
Possible cause: Faulty or interruption in transmission line between indoor
units and outdoor unit.
6 Check for improper combination of units. See the combination table in the
Databook for more information. Change the installation with ONLY compatible
type units.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
Total refrigerant
judgement is unknown.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Change field setting 2–14. See
4
356].
Effect
Unit will stop operating.
"6.9 Field settings" [
2 Troubleshooting
|
"6.9 Field
"4.1 Electrical
"6.9 Field
"4.1 Electrical
Reset
Manual reset via user
interface.
4
455].
Service manual
185