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D14 Meaning D15 Meaning
blink 6 times Unit closing down for
min.frequency
blink 6 times frequency of current 12 A lasting for 2 minutes
blink 7 times Unit closing down for
PFC protection
blink 7 times frequency limiting or demultiplying for rate of
frequency variation out of control
blink 8 times Unit closing down for
compressor overloading
blink 8 times frequency limiting or demultiplying of compressor
current
blink 9 times frequency limiting or demultiplying for over temp.of
IPM module
D17 Meaning D18 Meaning
blink 1 time too low DC input voltage On receiving or sending indoor data
blink 2 times too high DC voltage
when no short-circuit in
computer monitor port
off receiving or sending indoor data finished
blink 3 times AC current protection blink normal communication between main borad and
driving board
blink 4 times IPM abnormality
short-circuit in
computer monitor port
not
blink
abnormal communication between main board and
driving board
blink 5 times reserved built-in PFC
protection
blink 6 times start-up failure
blink 7 times phase-losing or out of
control
blink 8 times first PFC protection ;then
module protection
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