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In case of no failure, if the starting conditions of the system are not met, the digital tube of the
outdoor unit will display the standby code of the air conditioner:
555.0
Standby state of capacity over-
matched
The ratio of indoor capacity to out-
door capacity is over 130%.
Resumable
555.1 Heating at high ambient temp.
Ta>27°C, the indoor units standby
when they are running in heatling
mode.
555.3
Cooling at ambient temp. too high
or too low
Ta>54°C or Ta<-10°C, the indoor
units standby when they are running
in cooling mode.
555.4 Oil temp. preheating
The oil temperature does not meet
the starting conditions of the system.
555.b
The running mode of outdoor unit
does not match with the indoor
units.
The outdoor unit maybe setted to
cooling only or heating only.
Failure code
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