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SiUS28-902_a
Troubleshooting by Remote Controller
Troubleshooting
80
Outdoor Unit
LA
l
l
l
Malfunction of power unit
—
LC
l
l
l
Malfunction of transmission between inverter and
control P.C.B.
127
P4
k
l
k
Malfunction of inverter radiating fin temperature rise
sensor
128
System
U0
k
h
l
Low pressure drop due to refrigerant shortage or
electronic expansion valve failure
129
U1
l
l
l
Reverse phase / open phase
—
U2
l
l
l
Power supply insufficient or instantaneous failure
131
U3
l
l
l
Check operation not executed
133
U4
l
l
l
Malfunction of transmission between indoor units
and outdoor units
134
U5
l
l
l
Malfunction of transmission between remote
controller and indoor unit
136
U5
h
k
h
Failure of remote controller P.C.B. or setting during
control by remote controller
136
U7
l
l
l
Malfunction of transmission between outdoor units
—
U8
l
l
h
Malfunction of transmission between main and sub
remote controllers (malfunction of sub remote
controller)
137
UE
l
l
l
Malfunction of transmission between centralized
remote controller and indoor unit
138
UF
l
l
l
System is not set
140
UH
l
l
l
Malfunction of system, refrigerant system address
undefined
141
Centralized
Remote
Controller
and
Schedule
Timer
UE
l
l
l
Malfunction of transmission between centralized
remote controller and indoor unit
143
M1
k
or
h
l
l
P.C.B. defect
145
M8
k
or
h
l
l
Malfunction of transmission between optional
controllers for centralized control
146
MA
k
or
h
l
l
Improper combination of optional controllers for
centralized control
147
MC
k
or
h
l
l
Address duplication, improper setting
149
Heat
Reclaim
Ventilation
64
k
h
l
Indoor unit’s air thermistor error
—
65
k
h
l
Outside air thermistor error
—
68
k
h
l
Malfunction of HVU
—
6A
k
h
l
Damper system alarm
—
6A
l
l
l
Damper thermistor error
—
6F
k
h
l
Malfunction of simple remote controller
—
94
l
l
l
Internal transmission error
—
k
: ON
h
: OFF
l
: Blink
Malfunction
code
Operation
lamp
Inspection
display
Unit No.
Malfunction contents
Page
Referred
The system operates for malfunction codes indicated in gray squares, however, be sure to check and repair.
Summary of Contents for SkyAir FCQ18PVJU
Page 1: ...Split System Air Conditioners SkyAir Inverter R 410A Heat Pump 60Hz P Series SiUS28 902_a...
Page 44: ...Other Control SiUS28 902_a 37 Function...
Page 81: ...SiUS28 902_a Troubleshooting by Remote Controller Troubleshooting 74...
Page 185: ...SiUS28 902 Precautions for New Refrigerant R 410A Precautions for New Refrigerant R 410A 178...