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SiUS28-902_a
Troubleshooting
66
3.27 “
JC
” Outdoor Unit: Malfunction of Low Pressure Sensor ...................... 119
3.28 “
L1
” Outdoor Unit: Malfunction of P.C.B. .............................................. 121
3.29 “
L4
” Outdoor Unit: Malfunction of
Inverter Radiating Fin Temperature Rise ............................................. 122
3.30 “
L5
” Outdoor Unit: Inverter Compressor Abnormal............................... 123
3.31 “
L8
” Outdoor Unit: Inverter Current Abnormal ...................................... 124
3.32 “
L9
” Outdoor Unit: Inverter Start up Error ............................................. 126
3.33 “
LC
” Outdoor Unit: Malfunction of Transmission between
Inverter and Control P.C.B. .................................................................. 127
3.34 “
P4
” Outdoor Unit: Malfunction of
Inverter Radiating Fin Temperature Rise Sensor................................. 128
3.35 “
U0
” Outdoor Unit: Low Pressure Drop Due to Refrigerant Shortage or
Electronic Expansion Valve Failure ..................................................... 129
3.36 “
U2
” Power Supply Insufficient or Instantaneous Failure ...................... 131
3.37 “
U3
” Check Operation not Executed ..................................................... 133
3.38 “
U4
” Malfunction of Transmission between
Indoor Units and Outdoor Units ........................................................... 134
3.39 “
U5
” Malfunction of Transmission between
Remote Controller and Indoor Unit ...................................................... 136
3.40 “
U8
” Malfunction of Transmission between
Main and Sub Remote Controllers ....................................................... 137
3.41 “
UE
” Malfunction of Transmission between
Centralized Remote Controller and Indoor Unit ................................... 138
3.42 “
UF
” System is not Set yet .................................................................... 140
3.43 “
UH
” Malfunction of System,
Refrigerant System Address Undefined............................................... 141
4. Troubleshooting by Indication on
the Centralized Remote Controller .............................................143
4.1
“
UE
” Malfunction of Transmission between
Centralized Remote Controller and Indoor Unit ................................... 143
4.2
“
M1
” P.C.B. Defect ................................................................................ 145
4.3
“
M8
” Malfunction of Transmission between
Optional Controllers for Centralized Control ........................................ 146
4.4
“
MA
” Improper Combination of Optional Controllers for
Centralized Control .............................................................................. 147
4.5
“
MC
” Address Duplication, Improper Setting ......................................... 149
5. Troubleshooting by Indication on the Unified ON/OFF Controller.......150
5.1
Operation Lamp Blinks......................................................................... 150
5.2
Display “Under Host Computer Integrate Control” Blinks
(Repeats Single Blink) ......................................................................... 152
5.3
Display “Under Host Computer Integrate Control” Blinks
(Repeats Double Blink) ........................................................................ 155
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...