633
Troubleshooting
Failure code
on wired
controller
(hex)
PCB LED5(Indoor
Units)/
Receiver Timer
Lamp(Remote
Controller)
Panel
display (yellow
light ash times)
Fault Descriptions
01 1 1 Fault of indoor unit ambient temp. transducer TA
02 2 2 Fault of indoor unit pipe temp. transducer TC1
03 3 3 Fault of indoor unit pipe temp. transducer TC2
04 4 4 Fault of indoor unit dual heat source temp. transducer
05 5 5 Fault of indoor unit EEPROM
06 6 6 Fault of communication between indoor & outdoor units
07 7 7
Fault of communication between indoor unit and wired
control
08 8 8 Fault of indoor unit water drainage
09 9 9 Fault of duplicate indoor unit address
0C 12 12 Fault of zero cross sing
0E 14 14 Fault of DC fan
12 18 18 The 4-way valve of 3-pipe valve box reversing failure
14 20 20 Corresponding faults of outdoor units
MINI 4-way cassette (AB*2MCERA(M)) failure code
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