Haier AU052FNERA - Indoor failure code list

22
Failure code
When there is no failure, if the starting condition can not be met, digital tube on master unit will display stand-by code:
555.0
Standby state of capacity
overmatch
When the ratio of indoor horse power and outdoor horse power is
less than 50% or more than 130%, the system is in standby mode.
Resumable555.1
Outdoor ambient temperature
too high (heating)
Ta>27°C, Standby
555.3
Outdoor ambient temperature
too high or too low (cooling)
Ta>54°C or Ta<-15°C, Standby
Indication on
master unit
Indication on wired
controller
Flash times of LED5 on
indoor PCB/timer LED
on remote receiver
Failure code denition
01 01 1 Indoor ambient temp. sensor Ta failure
02 02 2 Indoor coil temp. sensor Tc1 failure
03 03 3 Indoor coil temp. sensor Tc2 failure
04 04 4 Indoor TW sensor failure
05 05 5 Indoor EEPROM failure
06 06 6 Communication between indoor and outdoor failure
07 07 7 Communication between indoor and wired controller failure
08 08 8 Indoor drainage failure
09 09 9 Indoor repeated address
0A 0A 10 Indoor repeated central control address
Outdoor
failure code
Outdoor failure
code
20 Outdoor corresponding failure
Indoor failure code list