E6-18-20-22 - Inverter Overcurrent Error; E7-01-13-25 - Outdoor Unit Fan Motor M1F Error - Daikin VRV IV+ Service Manual

2 Troubleshooting
2 Perform a check of the refrigerant low pressure sensor. See
"3.16 Refrigerant low pressure sensor" on page 126
Possible cause: Faulty refrigerant low pressure sensor.
3 Connect a pressure gauge to both high and low pressure
service ports and read the high and low refrigerant pressure.
Connect the service monitoring tool to the unit and compare the
pressure values to the pressure read on the pressure gauges.
In case the service monitoring tool read‑out does NOT
correspond with the pressures read through the pressure
gauges, the main PCB needs to be replaced, see
PCB" on page 106.
4 Perform a check of the main PCB. See
page 106.
Possible cause: Faulty main PCB.
5 Perform a check of the inverter PCB A3P. See
PCB" on page 99.
Possible cause: Faulty inverter PCB A3P.
6 Perform a check of the compressor. See
page 82.
Possible cause: Faulty compressor.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2.3.15 E6-18-20-22 – Inverter overcurrent error
Main error code Sub error code
E6 18
20
22
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
Overcurrent on Unit will stop
inverter PCB A6P for operating.
compressor M2C.
Actual current value
of the compressor is
abnormally high
compared to nominal
current of the
compressor for at
least 30 minutes.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Perform a check of the refrigerant high pressure sensor. See
"3.15 Refrigerant high pressure sensor" on
Possible cause: Faulty refrigerant high pressure sensor.
2 Perform a check of the refrigerant low pressure sensor. See
"3.16 Refrigerant low pressure sensor" on page 126
Possible cause: Faulty refrigerant low pressure sensor.
Service manual
18
https://daikin-p.ru/catalog/vrv-daikn/naruzhnye-vrv-bloki-daikin
"3.9 Main
"3.9 Main PCB" on
"3.8 Inverter
"3.2 Compressor" on
Unit
Main
Sub 1
Sub 2
Reset
Manual reset via user
interface.
page 124.
3 Connect a pressure gauge to both high and low pressure
service ports and read the high and low refrigerant pressure.
Connect the service monitoring tool to the unit and compare the
pressure values to the pressure read on the pressure gauges.
In case the service monitoring tool read‑out does NOT
correspond with the pressures read through the pressure
gauges, the main PCB needs to be replaced, see
PCB" on page 106.
4 Perform a check of the main PCB. See
page 106.
Possible cause: Faulty main PCB.
5 Perform a check of the inverter PCB A6P. See
PCB" on page 99.
Possible cause: Faulty inverter PCB A6P.
6 Perform a check of the compressor. See
page 82.
Possible cause: Faulty compressor.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2.3.16 E7-01-13-25 – Outdoor unit fan motor M1F
error
Main error code Sub error code
E7 01
13
25
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
Malfunction of Unit will stop
rotation detection for operating.
M1F. Careful, there is
no rpm detection. Fan
judgement is based
on logic by current
drawn.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Perform a check of the fan inverter PCB A4P. See
inverter PCB" on page 92.
Possible cause: Faulty fan inverter PCB A4P.
2 Check if power supply cable to fan motor is NOT loose. Check
connector X1A on fan inverter PCB A4P. See "To check the
wiring of the fan inverter PCB"
page 92. Check wire to fan motor M1F.
Possible cause: Faulty power supply cable to fan motor M1F.
3 Perform a check of the outdoor unit fan motor M1F. See
"3.12 Outdoor unit fan motor" on
Possible cause: Faulty outdoor unit fan motor M1F.
"3.9 Main
"3.9 Main PCB" on
"3.8 Inverter
"3.2 Compressor" on
Unit
Main
Sub 1
Sub 2
Reset
Manual reset via user
interface.
"3.6 Fan
"3.6 Fan inverter PCB" on
page 115.
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ Heat Pump
ESIE18-14 – 2019.07