Daikin VRV IV+ Service Manual page 103

2.3.87 L1-17-22-42 – Inverter PCB A6P abnormality
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
2 Perform a check of the inverter PCB A3P. See
Possible cause: Faulty inverter PCB A3P or non‑compatible inverter PCB.
3 Perform a check of the compressor. See "3.3 Compressor" [
Possible cause: Faulty compressor.
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.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Main error code
L1
INFORMATION
Main, Sub 1 and Sub 2 indications are relevant in multiple outdoor unit
configurations. Main outdoor unit is the unit to which F1‑F2 IN transmission line is
connected. Main, Sub 1 and Sub 2 outdoor units can be identified by field setting
1‑00.
Trigger
Main PCB detects voltage/
current errors on output
waveform or current
read-out.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Perform a check of the main PCB. See
Possible cause: Faulty main PCB or wrong capacity setting.
2 Perform a check of the inverter PCB A6P. See
Possible cause: Faulty inverter PCB A6P or non‑compatible inverter PCB.
3 Perform a check of the compressor. See "3.3 Compressor" [
Possible cause: Faulty compressor.
4 Check if the power supply is conform with the regulations. See
4
circuit" [ 356].
"3.10 Inverter
Sub error code
17
22
42
Effect
Unit will stop operating.
"3.11 Main
"3.10 Inverter
2 Troubleshooting
|
4
PCB" [ 274].
4
221].
"4.1 Electrical
Unit
Main
Sub 1
Sub 2
Reset
Manual reset via user
interface.
Power reset at outdoor
unit.
4
PCB" [ 290].
4
PCB" [ 274].
4
221].
"4.1 Electrical
Service manual
103