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 CTXG, CTXS, FTXS, CDXS, FDXS, FVXS Series SiUS181631EA
204 Troubleshooting
4.5 Front Panel Open/Close Fault
Applicable
Models
CTXG09/12/18QVJUW(S)
Error Code
C7
Error Decision
Conditions
If the error repeats, the system is shut down.
Supposed
Causes
Defective reduction motor
Malfunction or deterioration of the front panel mechanism
Defective limit switch
Troubleshooting
Note: You cannot operate the unit by the remote controller when the front panel mechanism breaks down.
<To the dealers: temporary measure before repair>
1. Turn off the power.
2. Remove the front panel.
3. Turn on the power.
(Wait until the initialization finishes.)
4. Operate the unit by the indoor unit ON/OFF button.
YES
YES
YES
YES
NO
NO
NO
NO
Replace the harness and
reduction motor.
Replace the assembly of the
front panel mechanism.
Check the movement of the
right and left separately by
hand.
Replace the assembly of the
front panel mechanism.
It is supposed such as
deformation of the panel or
stuffed dust.
Find out the cause.
Replace the limit switch.
(R17249)
Caution
Does the front panel
move?
Does the front
panel mechanism
move?
Does the front
panel open/close
fully?
Restart.
Does the error code
reappear?
Restart and check the
movement.
Remove the front panel and
check the movement.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.