Daikin VRV III-S RXYMQ36 48PVJU, Service Manual

Page: 201 / 264

Troubleshooting by Indication on the Remote Controller SiUS34-907
192 Troubleshooting
Troubleshooting
Check
the indoor
u nit for w hich
“UE” is displayed.
Is the the transmission malf u nction
(UE) ca u sed on
all indoor
u nits?
YES
Caution
Be s u re to t u rn off the po w er s w itch b efore connecting or disconnecting the connector, or parts may b e damaged.
Contin u ed to A (on the
follo w ing page)
N O
Is the
po w er s u pply of
the indoor u nit, on w hich
the “
UE
” occ u rred,
t u rned O N ?
N O
Make s u re there are no
hazardo u s sit u ations, and then
t u rn O N the po w er s u pply.
N O
Make correct setting of the
central control gro
u p N o.
YES
YES
YES
Has
the setting of
central control gro u p N o. b een
made w ith the indoor u nit on
w hich the “
UE
”
occ u rred?
Can
the setting of
central control gro u p N o
b e made?
N O YES
Check o u tdoor u nits to w hich
the refrigerant system is
connected.
For V R V
systems, can the
setting of central control gro u p
N o. b e made in one and
the same refrigerant
system?
Check w hether or not there are
no pro b lems w ith the
transmission w iring length,
types of ca b les and w ires,
n u m b er of u nits connected, and
others. If no pro b lems, replace
the indoor u nit PCB.
N O
N O
W as the central
control gro u p N o. for indoor u nit
changed?
Reset the po w er s u pplies of
e v ery centralized remote
controller.
For the intelligent To
u ch
Controller, register the air
conditioner again
w hile in
DIII- N ET test r u n men u .
YES