Daikin VRV IV+ Service Manual page 31

2.3.11 E3-20-21-22 – Jumper open on main PCB
2.3.12 E4-01-02-03 – Low pressure error
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
Main error code
E3
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
X4A jumper on main PCB
open.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Check that the bridge connector X4A of the main PCB is correctly connected.
See "3.11 Main PCB" [
Possible cause: Open jumper X4A on main PCB.
2 Perform a check of the high pressure switch. See
switch" [ 4 270].
Possible cause: Faulty high pressure switch.
3 Perform a check of the main PCB. See
Possible cause: Faulty main PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Main error code
E4
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.
Sub error code
20
21
22
Effect
Unit will stop operating.
4
290].
"3.11 Main
Sub error code
01
02
03
2 Troubleshooting
|
Unit
Main
Sub 1
Sub 2
Reset
Ensure X4A jumper is
inserted.
"3.9 High pressure
4
PCB" [ 290].
Unit
Main
Sub 1
Sub 2
Service manual
31