Service Manual
Table Of Contents
- Cover
- Table of contents
- Part 1 List of Functions
- Part 2 Specifications
- Part 3 Printed Circuit Board Connector Wiring Diagram
- Part 4 Refrigerant Circuit
- Part 5 Functions and Control
- Part 6 Test Operation and Field Settings
- Part 7 Remote Controller
- Part 8 Troubleshooting
- 1. Troubleshooting with LED
- 2. Service Diagnosis
- 3. Error Codes and Description
- 4. Troubleshooting for CTXG, CTXS, FTXS, CDXS, FDXS, FVXS Series
- 5. Troubleshooting for FFQ Series
- 6. Troubleshooting for Branch Provider (BP) Unit
- 7. Troubleshooting for Outdoor Unit
- 8. Thermistor Resistance/Temperature Characteristics
- 9. Pressure Sensor
- 10. Method of Replacing Inverter’s Power Transistors Modules
- Part 9 Appendix
Troubleshooting for Outdoor Unit SiUS181631EA
260 Troubleshooting
Troubleshooting
Has
an indoor
unit once connected
been remove or its
address
changed?
Is
the master
controller's
connector for setting
master controller
disconnected?
Is the power
supply turned on for
indoor units displaying
malfunction?
Is the
transmission wiring
disconnected or wired
incorrectly?
Is the
transmission with
all indoor units
malfunctioning?
Is the
group No. of
malfunctioning indoor
units set?
Is the
transmission
wiring with the master
controller disconnected or
wired incorrectly?
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Connect the connector
correctly.
NO
Reset power supply
simultaneously for all
optional controllers for
centralized control.
YES
NO
Turn indoor unit's power
supply.
NO
YES
Fix the wiring correctly.
NO
YES
NO
YES
Fix the wiring correctly.
NO
YES
Replace the PCB of the
centralized remote
controller.
YES
(R22253)
Set the group No.
correctly.
NO
Replace the indoor unit
PCB (control PCB).
YES