Daikin VRV IV+ RXYTQ8U5YF Installer And User Manual page 131

Main code
Master
RXYTQ
VRV IV+ heat pump for high ambient temperatures
4P561157-1B – 2021.11
Sub code
Slave 1 Slave 2
Cause
Warning indication: Leak
detection or refrigerant
amount check not performed
(system operation possible)
Malfunction code: System test
run not yet executed (system
operation not possible)
Faulty wiring to Q1/Q2 or
indoor - outdoor
Faulty wiring to Q1/Q2 or
indoor - outdoor
System test run abnormal
ending
Warning: faulty wiring to Q1/
Q2
Malfunction code: faulty
wiring to Q1/Q2
▪ Too many indoor units are
connected to F1/F2 line
▪ Bad wiring between outdoor
and indoor units
System mismatch. Wrong type
of indoor units combined
(R410A, R407C, RA, Hydrobox,
etc)
Indoor unit malfunction
Connection malfunction over
indoor units or type mismatch
(R410A, R407C, RA, Hydrobox,
etc)
Connection malfunction over
indoor units or type mismatch
(R410A, R407C, RA, Hydrobox,
etc)
Wrong unit combination
(multi system)
Wrong unit combination
(multi system)
Auto address malfunction
(inconsistency)
23 Troubleshooting
|
Solution
Execute autocharge function
(see manual); unit not ready
for leak detection
functionality.
Execute system test run.
Check (Q1/Q2) wiring.
Check (Q1/Q2) wiring.
Execute test run again.
Check Q1/Q2 wiring.
Check Q1/Q2 wiring.
Check indoor unit amount and
total capacity connected.
Check if other indoor units
have malfunction and confirm
indoor unit mix is allowed.
Check if other indoor units
have malfunction and confirm
indoor unit mix is allowed.
Check if other indoor units
have malfunction and confirm
indoor unit mix is allowed.
Check if unit types are
compatible.
Check if unit types are
compatible.
Check if transmission wired
unit amount matches with
powered unit amount (by
monitor mode) or wait till
initialisation is finished.
Installer and user reference guide
131