Noise Filter Pcb; Checking Procedures - Daikin VRV IV+ Service Manual

3 Components
(*) For RXYQQ8~20 models it is necessary to judge if an additional
parameter setting is required, depending on the indoor unit type:
▪ All indoor units are R410A type indoor units: no additional setting
is required. (2-73=0 by default)
▪ All indoor units are non-R410A type indoor units: Parameter
setting 2-73=1 is required.
INFORMATION
The mix of non-R410A type units together with R410A type
units is
Compatible non-R410A type indoor units are restricted,
please consult the Data Book on Business Portal for
further details.
Is the problem solved?
Yes
No
To adjust the wiring of the main PCB
1 Adjust the wiring according to the wiring diagram and
connection diagram, see "6.2 Wiring diagram" on
2 Check that all wires are properly connected and that all
connectors are fully plugged‑in.
3 Check that no connectors or wires are damaged.
4 Check that the bridge connector X4A is plugged in, see
"6.2 Wiring diagram" on page 146.
Is the problem solved?
Yes
No
To remove a fuse of the main PCB
Prerequisite: Stop the unit operation (via the user interface, central
controller, operation switch, ...).
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
work" on page 118.
1 Remove the fuse from the PCB.
a
a
a Fuse
2 To install the fuse on the main PCB, see
procedures" on page 108.
To install a fuse on the main PCB
WARNING
For continued protection against risk of fire, replace only
with same type and rating of fuse.
1 Install the fuse on the correct location on the PCB.
Service manual
110
https://daikin-p.ru/catalog/vrv-daikn/naruzhnye-vrv-bloki-daikin
not possible.
Action
No further actions required.
Return to "3.9.1 Checking
procedures" on page 106 of the
main PCB and continue with the
next procedure.
page 146.
Action
No further actions required.
Return to "3.9.1 Checking
procedures" on page 106 of the
main PCB and continue with the
next procedure.
"3.13 Plate
"3.9.2 Repair
CAUTION
Make sure the fuse is plugged‑in correctly (contact with the
fuse holder).
a
a
a Fuse
Is the problem solved?
Yes
No
3.10

Noise filter PCB

3.10.1

Checking procedures

INFORMATION
It is recommended to perform the checks in the listed
order.
To perform a power check of the noise filter PCB
Prerequisite: Stop the unit operation (via the user interface, central
controller, operation switch, ...).
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
work" on page 118.
1 Turn ON the power of the unit.
2 Measure the voltage between the following wires of the noise
filter PCB on the location shown below. All measurements
MUST be 400 V AC.
▪ L1A–L2A
▪ L1A–L3A
▪ L2A–L3A
c
b
a
a L1A
b L2A
c L3A
Is the measured voltage on the
PCB correct?
Yes
No
Action
No further actions required.
Return to "3.9.1 Checking
procedures" on page 106 of the
main PCB and continue with the
next procedure.
"3.13 Plate
Action
Return to "3.10.1 Checking
procedures" on page 110
procedures of the PCB and
continue with the next procedure.
Continue with the next step.
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ Heat Pump
ESIE18-14 – 2019.07