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Failure code
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:
Standby state of capacity over-
555.0
matched
555.1
Heating at high ambient temp.
Cooling at ambient temp. too high
555.3
or too low
555.4
Oil temp. preheating
The running mode of outdoor unit
555.b
does not match with the indoor
units.
The ratio of indoor capacity to out-
door capacity is over 130%.
Ta>27°C, the indoor units standby
when they are running in heatling
mode.
Ta>54°C or Ta<-10°C, the indoor
units standby when they are running
in cooling mode.
The oil temperature does not meet
the starting conditions of the system.
The outdoor unit maybe setted to
cooling only or heating only.
29
Resumable
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