FORM NO.: 6U5M-A11M-NB-EN
JOHNSON CONTROLS 43
TABLE 12– DESCRIPTION OF FAULT CODE（020~040）
DESCRIPTION FAULT CODE
AI1 Refrigerant inlet accumulator temperature sensor fault 1A
AI2 Suction pressure transducer fault 2A
AI3 Discharge temperature sensor fault 3A
AI4 Ambient temperature sensor fault 4A
AI5 System leaving water temperature sensor fault 5A
AI6 System return water temperature sensor fault 6A
AI7 Unit leaving water temperature sensor fault 7A
AI8 Coil temperature sensor fault 8A
AI9 Economizer inlet temperature sensor fault 9A
AI10 Economizer outlet temperature sensor fault 10A
DI1 Water flow switch fault or water pump overload alarm 1d
DI3 Over pressure alarm 3d
DI5 Power failure 5d
Communication failure ( failure on 1# unit is between principal unit and wire
controller while others for principal and subordinate unit.）
1E
Conflict setting of unit model type 2E
Excessive lower ambient temperature for cooling mode 4E
Excessive lower system leaving water temperature for cooling mode 6E
Excessive higher system leaving water temperature for heating mode 7E
Communication failure between principal unit and T8600 or BAS 9E
Freezing protection in winter 10E
Excessive lower unit leaving water temperature for cooling mode 11E
Excessive higher unit leaving water temperature for heating mode 13E
Excessive lower unit leaving water temperature for heating mode 15E
Excessive higher discharge temperature 1F
Freezing protection of BPHE 9F
Communication failure of unit （between Mainboard and driver）
2p
Mismatching of driver type 4p
Compressor driver alarm 6p
Excessive higher speed of fan 1 8p
Excessive higher speed of fan 2 9p
Excessive lower speed of fan 1 10p
Excessive lower speed of fan 2 11p
Inverter pump communication 12p
Inverter pump drive failure 13p
Mainboard hardware failure 14p
Mainboard and Fan1 communication failure 15P
Cooke Industries - Phone: +64 9 579 2185 Email: sales@cookeindustries.co.nz Web: www.cookeindustries.co.nz
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