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In the case of no fault, if the system does not meet the start-up conditions, the host digital display standby code:
555.0
Indoor machine capacity beyond the
outdoor machine capacity of 150% or
less than 50%, standby system
Indoor machine capacity beyond the outdoor
machine capacity of 150% or less than 50%, standby
system
resumable
555.1 26 degree standby
Ambient temperature above 26 degrees indoor heat
can not boot
555.2 Low pressure (gas) standby
Refrigeration Ps<0.23Mpa or heating Ps<0.12Mpa
start, system standby
555.3
54 degrees above the cooling outdoor
machine is not running
54 degrees above the cooling outdoor machine is
not running
555.5 Power restriction Power inhibit setting maximum capacity output is 0%
555.6 Password lock
Password lock system to set the maximum operating
time to the system standby
555.8 No trial running No trial running
Valve box failure code list
Failure
code
Failure code denition Judgment method Remarks
5 Valve box EEPROM date failure Un-resumable
6
Communication between valve
box and outdoor failure
No communication with the outdoor
unit for continuous 120 seconds
Resumable
7
Communication between valve
box and indoor failure
When detecting the connected
indoor units, the indoor unit quantity
is zero.
Resumable
9 Valve box repeated address Resumable
20 Outdoor corresponding failure Resumable
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