OK
OK
OK
1. Indoor unit power supply defective 2 Indoor unit overconnected
3.Communication line incorrect connection 4. Noise, momentary open
Outdoor unit Main PCB
Check Point 1 : Check the indoor unit power supply
Check the indoor unit power supply
Check Point 2 : Check the indoor unit number connection
Check if more than 64 indoor units are connected in a refrigerant circuit
Is it uncoupled or cut halfway ?
Connecting terminal position is correct as the installation manual shows ?
Check Point 4 : Check noise, momentary open, voltage drop
Check if power supply temporarily stops by outages or if strong noise is generated from
surrounding environment during auto address
Check Point 3 : Check the communication line connection
Indoor Unit : No Display
Outdoor Unit : E. 28. 1
Error Code : 28
04-56
Auto Address Setting Error
When none of the connected indoor units answers during auto address
And when abnormal answer signal is input.
Trouble shooting 46
Indicate or Display:
Detective Actuators:
Detective details:
OUTDOOR UNIT Error Method:
Forecast of Cause :
OK
OK
OK
1. Signal amplifier power supply defective 2. Signal amplifier overconnected
3. Signal amplifier auto address wrong setting 4. Noise, momentary open.
Outdoor unit Main PCB
Check Point 1 : Check signal amplifier unit power supply
Check signal amplifier unit power supply
Check Point 2 : Check the signal amplifier number connection
Check if more than 8 signal amplifiers are connected in a network
Check if signal amplifier auto address is set at the same time from multiple
outdoor units (master unit)
Check Point 4 : Check noise, momentary open, voltage drop
Check if power supply temporarily stops by outages or if strong noise is generated from
surrounding environment during signal amplifier auto address
Check Point 3 : Check the operation of signal amplifier auto address setting
Indoor Unit : No Display
Outdoor Unit : E. 28. 4
Error Code : 28
Signal Amplifier Auto Address Error
When abnormal answer signal is input during signal amplifier auto address
Trouble shooting 47
Indicate or Display:
Detective Actuators:
Detective details:
OUTDOOR UNIT Error Method:
Forecast of Cause :
Check if communication line is correctly connected
Summary of Contents for Airstage J-II
Page 1: ...Small VRF system for light commercial and home use SERVICE MANUAL ...
Page 2: ......
Page 6: ......
Page 7: ...1 TEST RUN ...
Page 8: ......
Page 27: ...2 OUTDOOR UNIT OPERATION CONTROL ...
Page 28: ......
Page 42: ......
Page 43: ...3 INDOOR UNIT OPERATION ...
Page 44: ......
Page 63: ...4 TROUBLE SHOOTING ...
Page 73: ......
Page 170: ......
Page 171: ...5 APPENDING DATA UNIT ...
Page 172: ......
Page 174: ...MODELS AUXB07 AUXB09 AUXB12 AUXB14 AUXB18 AUXB24 05 02 5 2 WIRING DIAGRAM 5 2 1 Indoor Unit ...
Page 175: ...MODELS AUXD18 AUXD24 AUXA30 AUXA36 AUXA45 AUXA54 05 03 ...
Page 176: ...MODELS ARXB07 ARXB09 ARXB12 ARXB14 ARXB18 05 04 ...
Page 177: ...MODEL ARXB24 MODELS ARXB30 ARXB36 05 05 ...
Page 178: ...MODEL ARXB45 05 06 ...
Page 179: ...MODEL ARXA24 MODELS ARXA30 ARXA36 ARXA45 05 07 ...
Page 180: ...MODELS ARXC36 ARXC45 ARXC60 MODELS ARXC72 ARXC90 05 08 ...
Page 181: ...MODELS ARXD07 ARXD09 ARXD12 ARXD14 ARXD18 ARXD24 05 09 ...
Page 182: ...MODELS AB A12 AB A14 AB A18 AB A24 05 10 ...
Page 183: ...MODELS AB A12LBTH AB A14LBTH 05 11 AB A18LBTH AB A24LBTH ...
Page 184: ...05 12 MODELS AB A30 AB A36 AB A45 AB A54 ...
Page 185: ...05 13 MODELS AB A30LBTH AB A36LBTH AB A45LBTH AB A54LBTH ...
Page 186: ...MODELS AS A07 AS A09 AS A12 AS A14 05 14 ...
Page 187: ...MODELS AS E07 AS E09 AS E12 AS E14 05 15 ...
Page 188: ...MODELS AS A18 AS A24 AS A30 05 16 ...
Page 189: ...05 17 MODELS AS A18LACH AS A24LACH AS A30LACH ...
Page 190: ...05 18 MODELS AJ A36 45 54LALH 5 2 2 Outdoor Unit ...
Page 195: ...6 DISASSEMBLY PROCESS ...
Page 196: ......