Daikin VRV IV+ Service Manual page 363

To adjust the wiring between the outdoor units
4.2 Refrigerant circuit
4.2.1 Checking procedures
To check if the stop valves are open
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
2 Push BS3 (RETURN) and hold it for 5 seconds until the 7-segment display
shows "000". Then release BS3.
Result: After a while, voltage will drop to almost 0 V DC. At this stage it means
that re-initialization has started.
Result: Depending on the system size, voltage will rise to 16 V DC and hit 0 V
back again several times.
Result: When finished, 7‑Segment Display will turn OFF. This indicates that re-
initialization has completed.
The time this procedure takes, depends on the amount of indoor units.
1 Adjust the wiring according to the wiring diagram and connection diagram,
see "6.2 Wiring diagram" [
2 Check that all wires are properly connected.
3 Check that no wires are damaged.
Is the problem solved?
Yes
No
INFORMATION
It is recommended to perform the checks in the listed order.
Prerequisite: Remove the required plate work, see
1 Remove the caps.
a
a Liquid stop valve
b Suction gas stop valve
4 Third party components
|
4
385].
Action
No further actions required.
Return to the troubleshooting of the
specific error and continue with the
next procedure.
"3.15 Plate
b c
4
work" [ 315].
Service manual
363