L1-17-22-42 - Inverter Pcb A6P Abnormality; L1-18-23-43 - Inverter Pcb A6P Current Detection Primary Circuit; L1-19-24-44 - Inverter Pcb A6P Current Detection Secondary Circuit - Daikin VRV IV+ Service Manual

2 Troubleshooting
2.3.63 L1-17-22-42 – Inverter PCB A6P
abnormality
Main error code Sub error code
L1 17
22
42
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 Effect
Main PCB detects Unit will stop
voltage/current errors operating.
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
page 106.
Possible cause: Faulty main PCB or wrong capacity setting.
2 Perform a check of the inverter PCB A6P. See
PCB" on page 99.
Possible cause: Faulty inverter PCB A6P or non‑compatible
inverter PCB.
3 Perform a check of the compressor. See
page 82.
Possible cause: Faulty compressor.
4 Check if the power supply is conform with the regulations. See
"4.1 Electrical circuit" on page 130.
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.
2.3.64 L1-18-23-43 – Inverter PCB A6P current
detection primary circuit
Main error code Sub error code
L1 18
23
43
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.
Service manual
36
https://daikin-p.ru/catalog/vrv-daikn/naruzhnye-vrv-bloki-daikin
Unit
Main
Sub 1
Sub 2
Reset
Manual reset via user
interface.
Power reset at
outdoor unit.
"3.9 Main PCB" on
"3.8 Inverter
"3.2 Compressor" on
Unit
Main
Sub 1
Sub 2
Trigger Effect
Main PCB detects Unit will stop
voltage/current errors operating.
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
page 106.
Possible cause: Faulty main PCB or wrong capacity setting.
2 Perform a check of the inverter PCB A6P. See
PCB" on page 99.
Possible cause: Faulty inverter PCB A6P or non‑compatible
inverter PCB.
3 Perform a check of the compressor. See
page 82.
Possible cause: Faulty compressor.
4 Check if the power supply is conform with the regulations. See
"4.1 Electrical circuit" on page 130.
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.
2.3.65 L1-19-24-44 – Inverter PCB A6P current
detection secondary circuit
Main error code Sub error code
L1 19
24
44
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 Effect
Main PCB detects Unit will stop
voltage/current errors operating.
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
page 106.
Possible cause: Faulty main PCB or wrong capacity setting.
2 Perform a check of the inverter PCB A6P. See
PCB" on page 99.
Reset
Manual reset via user
interface.
Power reset at
outdoor unit.
"3.9 Main PCB" on
"3.8 Inverter
"3.2 Compressor" on
Unit
Main
Sub 1
Sub 2
Reset
Manual reset via user
interface.
Power reset at
outdoor unit.
"3.9 Main PCB" on
"3.8 Inverter
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ Heat Pump
ESIE18-14 – 2019.07