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Troubleshooting by Remote Controller
SiUS39-602
124
Troubleshooting
Outdoor
Unit
LA
9
9
9
Malfunction of power unit
—
LC
9
9
9
Malfunction of transmission between inverter and
control PC board
169
P1
9
9
9
Inverter over-ripple protection
171
P4
9
9
9
Malfunction of inverter radiating fin temperature rise sensor
172
PJ
9
9
9
Faulty field setting after replacing main PC board or
faulty combination of PC board
173
System
U0
8
7
9
Low pressure drop due to refrigerant shortage or
electronic expansion valve failure
174
U1
9
9
9
Reverse phase / open phase
175
U2
9
9
9
Power supply insufficient or instantaneous failure
176
U3
9
9
9
Check operation is not conducted.
178
U4
9
9
9
Malfunction of transmission between indoor and
outdoor units
179
U5
9
9
9
Malfunction of transmission between remote
controller and indoor unit
181
U5
7
8
7
Failure of remote controller PC board or setting
during control by remote controller
181
U7
9
9
9
Malfunction of transmission between outdoor units
182
U8
9
9
7
Malfunction of transmission between main and sub
remote controllers (malfunction of sub remote
controller)
184
U9
9
9
9
Malfunction of transmission between indoor unit and
outdoor unit in the same system
185
UA
9
9
9
Excessive number of indoor units etc.
187
UC
8
8
8
Address duplication of central remote controller
188
UE
9
9
9
Malfunction of transmission between central remote
controller and indoor unit
189
199
UF
9
9
9
Refrigerant system not set, incompatible wiring /
piping
191
UH
9
9
9
Malfunction of system, refrigerant system address
undefined
192
Central
Remote
Controller
and
Schedule
Timer
M1
8
or
7
9
9
Central remote controller or schedule timer PC board
defect
194
201
M8
8
or
7
9
9
Malfunction of transmission between optional
controllers for centralized control
195
202
MA
8
or
7
9
9
Improper combination of optional controllers for
centralized control
196
203
MC
8
or
7
9
9
Address duplication, improper setting
198
205
Heat
Reclaim
Ventilati
on
64
8
7
9
Indoor unit’s air thermistor error
—
65
8
7
9
Outside air thermistor error
—
6A
8
7
9
Damper system alarm
—
6A
9
9
9
Damper thermistor error
—
6F
8
7
9
Malfunction of simple remote controller
—
6H
8
7
9
Malfunction of door switch or connector
—
94
9
9
9
Internal transmission error
—
Malfunction
code
Operation
lamp
Inspection
display
Unit No.
Malfunction contents
Page
Referred
The system operates for malfunction codes indicated in black squares, however, be sure to check and repair.
Summary of Contents for REYQ72
Page 35: ...Specifications SiUS39 602 24 Specifications...
Page 121: ...Field Setting SiUS39 602 110 Test Operation...
Page 129: ...Troubleshooting by Remote Controller SiUS39 602 118 Troubleshooting...
Page 225: ...Troubleshooting OP Unified ON OFF Controller SiUS39 602 214 Troubleshooting...
Page 232: ...SiUS39 602 Piping Diagrams Appendix 221 1 3 BS Unit BSVQ36MVJU BSVQ60MVJU 4D045338...
Page 235: ...Wiring Diagrams for Reference SiUS39 602 224 Appendix REYQ144 168 192MTJU C 3D050354A...
Page 240: ...SiUS39 602 Wiring Diagrams for Reference Appendix 229 2 4 BS Unit BSVQ36M 60MVJU 3D045069A...
Page 249: ...Example of Connection R 410A Type SiUS39 602 238 Appendix...
Page 255: ...Method of Replacing The Inverter s Power Transistors and Diode Modules SiUS39 602 244 Appendix...
Page 265: ...Precautions for New Refrigerant R 410A SiUS39 602 254 Precautions for New Refrigerant R 410A...
Page 269: ...SiUS39 602 iv Index...