Daikin VRV K - Malfunction of Transmission between Optional Controllers for Centralized Control

Si-95 Troubleshooting (OP: Central Remote Controller)
Troubleshooting Inverter K Series 125
5.3 Malfunction of Transmission between Optional Controllers for Centralized
Control
Remote Controller
Display
MM
MM
88
88
Supposed Causes ■ Malfunction of transmission between optional controllers for centralized control
■ Defect of PC board of optional controllers for centralized control
Troubleshooting
(VF072)
Is
transmission wiring
disconnected or wired
incorrectly?
The PC board of one of the optional
controllers for centralized control is
defective. Try turning on/off using each
optional controllers for centralized
control, and replace the PC board of
the one that is unable to control the
indoor unit.
YES
NO
Fix the wiring correctly.
YES
NO
Has a once
connected optional
controller for centralized control
been disconnected or its
address
changed?
Turn on power supply for all optional
controllers for centralized control.
Reset power supply simultaneously for
all optional controllers for centralized
control.
YES
NO
Is
the power supply
turned on for all optional
controllers for
centralized control?
Set reset switch to "normal."
YES
NO
Is
the reset switch
of all optional controllers
for centralized control set to
''normal?''
SI-95.BOOK Page 125 Friday, March 31, 2000 10:59 AM