Error Based Troubleshooting; E1-01 - Outdoor Unit Main Pcb A1P Error; E1-02 - Outdoor Unit Main Pcb A1P Error; E2-01-02-03 - Current Leak Detection - Daikin VRV IV+ Service Manual

2 Troubleshooting
7 While in field settings mode, press TEST button (d) for 5
seconds.
Result: Mode 40 is accessed.
8 Push the temperature set button (f) to change the History No.
(g).
No 1 stands for the latest error.
Result: The History No. (g) and error code (h) are displayed.
g
h
9 Press TEST button (d) to return to the home screen.
2.3

Error based troubleshooting

2.3.1 E1-01 – Outdoor unit main PCB A1P error
Trigger Effect
Main PCB fails Unit will stop
reading/writing operating.
memory (EEPROM
error).
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.
2 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.
3 Check the F1‑F2 transmission line between the indoor units and
outdoor unit. See "4.1 Electrical circuit" on
Possible cause: Faulty or interruption in transmission line
between indoor units and outdoor unit.
4 Perform a power reset. If the error disappears and is raised
again after a while, check for the presence of an external
source causing electrical noise. See
page 138.
Possible cause: External source may cause interference.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
Service manual
12
https://daikin-p.ru/catalog/vrv-daikn/naruzhnye-vrv-bloki-daikin
Reset
Manual reset via user
interface.
"3.9 Main PCB" on
page 130.
"4.3 External factors" on
2.3.2 E1-02 – Outdoor unit main PCB A1P error
Trigger Effect
Defected main PCB. Unit will stop
operating.
To solve the error code
1 Perform a check of the main PCB. See
page 106.
Possible cause: Faulty main PCB.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2.3.3 E2-01-02-03 – Current leak detection
Main error code Sub error code
E2 01
02
03
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
earth leakage through operating.
current sensor
>safety value, see
"6.6 Safety
devices" on
page 183.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Perform a check of the current sensor. See
sensor" on page 88.
Possible cause: Faulty current sensor.
2 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.
3 Perform a check of the main PCB. See
page 106.
Possible cause: Faulty main PCB.
4 Using a megger device, check the solenoid valve coils, 4‑way
valve coil, fan motors and compressors if any earth leakage is
found. Replace the component(s) that generate earth leakage.
5 Check if the refrigerant circuit is correctly charged. See
"4.2 Refrigerant circuit" on page 133.
Possible cause: Refrigerant overcharge.
6 Check for the presence of humidity in the refrigerant circuit. See
"4.2 Refrigerant circuit" on page 133.
Reset
Manual reset via user
interface.
"3.9 Main PCB" on
Unit
Main
Sub 1
Sub 2
Reset
Manual reset via user
interface.
"3.4 Current
"3.9 Main PCB" on
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ Heat Pump
ESIE18-14 – 2019.07