SiUS12-928_A
Troubleshooting
Service Diagnosis
148
5.28 Unspecified Voltage (between Indoor and Outdoor Units) /
Anti-icing Function in Other Rooms
Remote
Controller
Display
UA
,
UH
Outdoor Unit LED
Display
A
1
2
3
4
Method of
Malfunction
Detection
A wrong connection is detected by checking the combination of indoor and outdoor units on the
microcomputer.
Malfunction
Decision
Conditions
Anti-icing function in other rooms
Unspecified internal and/or external voltages
Mismatching of indoor and outdoor units
Supposed
Causes
Anti-icing function in other rooms
Wrong models interconnected
Wrong indoor unit PCB or outdoor unit PCB mounted
Troubleshooting
Note:
Refer to “Anti-icing function” on page 113 for detail.
(R7151)
Caution
NO
YES
NO
YES
NO
YES
Check the model combination.
Check the combination of all the
models being connected.
Error displayed while
operating?
Supply voltage as
specified?
Matched compatibly?
The anti-icing function is
activated in other rooms.
Refer to
A5
.
Correct.
Match the compatible models.
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Summary of Contents for SUPER MULTI NX G Series
Page 1: ...SiUS12 928_A Applied Models Inverter Multi Heat Pump G Series J Series...
Page 7: ...SiUS12 928_A Table of Contents vi...
Page 10: ...SiUS12 928_A 1 List of Functions Part 1 List of Functions 1 Functions 3...
Page 11: ...SiUS12 928_A List of Functions 2...
Page 17: ...SiUS12 928_A Specifications 8...
Page 23: ...SiUS12 928_A Specifications Specifications 14...
Page 25: ...SiUS12 928_A Printed Circuit Board Connector Wiring Diagram 16...
Page 37: ...SiUS12 928_A Function and Control 28...
Page 69: ...SiUS12 928_A Control Specification Function and Control 60...
Page 71: ...SiUS12 928_A Operation Manual 62...
Page 73: ...SiUS12 928_A Duct Free System Operation Manual 64 2 Duct Free System 2 1 Remote Controller...
Page 84: ...Duct Free System SiUS12 928_A 75 Operation Manual...
Page 85: ...SiUS12 928_A Duct Free System Operation Manual 76 2 8 TIMER Operation...
Page 86: ...Duct Free System SiUS12 928_A 77 Operation Manual...
Page 87: ...SiUS12 928_A Duct Free System Operation Manual 78 2 9 Note for Multi System...
Page 88: ...Duct Free System SiUS12 928_A 79 Operation Manual...
Page 97: ...SiUS12 928_A Slim Duct Built In System Operation Manual 88...
Page 99: ...SiUS12 928_A Service Diagnosis 90...
Page 169: ...SiUS12 928_A Removal Procedure 160...
Page 225: ...SiUS12 928_A Trial Operation and Field Settings 216...
Page 235: ...SiUS12 928_A Appendix 226...