Daikin RXYSQ4-5-6PA7V1B Service Manual page 148

SiBE34-802
Malfunction
code
Outdoor Unit LA
LC
P1
System U0
U1
U2
U3
U4
U5
U5
U7
U8
U9
UA
UC
UE
UF
UH
Central UE
Remote
Controller
M1
and
Schedule M8
Timer
MA
MC
Heat 64
Reclaim
65
Ventilation
68
6A
6A
6F
94
The system operates for malfunction codes indicated in black squares, however, be sure to check and repair.
Troubleshooting
Operation
lamp
Malfunction of power unit
9
Malfunction of transmission between inverter and control PC board
9
High voltage of capacitor in main inverter circuit.
9
Low pressure drop due to refrigerant shortage or electronic expansion
8
valve failure
Reverse phase / open phase
9
Power supply insufficient or instantaneous failure
9
Check operation is not completed.
9
Malfunction of transmission between indoor and outdoor units
9
Malfunction of transmission between remote controller and indoor unit
9
Failure of remote controller PC board or setting during control by remote
7
controller
Malfunction of transmission between outdoor units
9
Malfunction of transmission between main and sub remote controllers
9
(malfunction of sub remote controller)
Malfunction of transmission between indoor unit and outdoor unit in the
9
same system
Excessive number of indoor units
9
Address duplication of central remote controller
8
Malfunction of transmission between central remote controller and indoor
9
unit
System is not set yet
9
Malfunction of system, refrigerant system address undefined
9
Malfunction of transmission between centralized remote controller and
9
indoor unit
8 or 7 PC board defect
8 or 7 Malfunction of transmission between optional controllers for centralized
control
8 or 7 Improper combination of optional controllers for centralized control
8 or 7 Address duplication, improper setting
Indoor unit's air thermistor error
8
Outside air thermistor error
8
Malfunction of HVU
8
Damper system alarm
8
Damper system + thermistor error
9
Malfunction of simple remote controller
8
Internal transmission error
9
Troubleshooting by Remote Controller
Malfunction contents
8: ON 7: OFF 9: Blink
Page
Referred
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193
194
196
196
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197
198
200
201
202
204
205
206
207
208
209
211
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