Specifications
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 Function and Control
- Part 5 Operation Manual
- Part 6 Service Diagnosis
- 1. Caution for Diagnosis
- 2. Problem Symptoms and Measures
- 3. Service Check Function
- 4. Code Indication on the Remote Controller
- 5. Troubleshooting
- 5.1 Indoor Units
- 5.2 Outdoor Units
- 5.3 Indoor Unit PCB Abnormality A1
- 5.4 Freeze-up Protection Control or High Pressure Control A5
- 5.5 Fan Motor or Related Abnormality A6
- 5.6 Thermistor or Related Abnormality (Indoor Unit) C4,C9
- 5.7 Front Panel Open / Close Fault C7
- 5.8 Signal Transmission Error (between Indoor and OutdoorUnit) U4
- 5.9 Unspecified Voltage (between Indoor and Outdoor Units) UA
- 5.10 Freeze-up Protection Control A5
- 5.11 Outdoor Unit PCB Abnormality E1
- 5.12 OL Activation (Compressor Overload) E5
- 5.13 Compressor Lock E6
- 5.14 DC Fan Lock E7
- 5.15 Input Over Current Detection E8
- 5.16 Discharge Pipe Temperature Control F3
- 5.17 High Pressure Control in Cooling F6
- 5.18 Compressor Sensor System Abnormality H0
- 5.19 Position Sensor Abnormality H6
- 5.20 CT or Related Abnormality H8
- 5.21 Thermistor or Related Abnormality (Outdoor Unit) P4,J3,J6,J8,J9,H9
- 5.22 Electrical Box Temperature Rise L3
- 5.23 Radiation Fin Temperature Rise L4
- 5.24 Output Over Current Detection L5
- 5.25 Insufficient Gas U0
- 5.26 Low-voltage Detection or Over-voltage Detection U2
- 5.27 Signal Transmission Error (on Outdoor Unit PCB) U7
- 5.28 Anti-icing Function in Other Rooms / UnspecifiedVoltage (between Indoor and Outdoor Units) UA,UH
- 6. Check
- Part 7 Removal Procedure
- Part 8 Others
- Part 9 Appendix
- Index
- Drawings & Flow Charts
Troubleshooting SiBE12-713
252 Service Diagnosis
5.14 DC Fan Lock
Remote
Controller
Display
E7
Outdoor Unit LED
Display
A
5
1
4
2
4
3
4
4
4
Method of
Malfunction
Detection
A fan motor line error is detected by checking the high-voltage fan motor rpm being detected by
the Hall IC.
Malfunction
Decision
Conditions
The fan does not start in 30 seconds even when the fan motor is running.
The system will be shut down if the error occurs 16 times.
Clearing condition: Continuous run for about 5 minutes (normal)
Supposed
Causes
Fan motor breakdown
Harness or connector disconnected between fan motor and PCB or in poor contact
Foreign matters stuck in the fan
Troubleshooting
Check No.15
Refer to P.284
Turn off the power and
reconnect the connector.
Remove.
Replace the outdoor unit
fan motor.
Replace the outdoor unit
PCB.
(R2843)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Fan motor connector
disconnected?
YES
YES
NO
YES
NO
Pulse signal inputted?
NO
Foreign matters in or
around the fan?
Get started.
Check No. 15
Check the outdoor unit PCB rpm
pulse input.