Haier AD182AMERA Service Manual page 63

24 24
11000
No No No
1）Indoor pipe temp. is abnormal, outdoor default cooling temp. : 5℃, heating temp.: 40℃. The
above temperatures are normal.
2）In defrosting, and in 3 minutes after defrosting is over, if sensor is abnormal, there will not alarm.
8.2.12 Backup operation
Outdoor TC failure treatment: outdoor LED alarms, but the failure code will not be sent to other place,
the outdoor default TC is as follow: cooling temperature, 5℃; heating temperature, 40℃.
8.2.13 Special functions
1) Power operation
When receiving the Power operation signal from indoor, the unit will operate as the set frequency by
EEPROM. Fan speed will depend on the ambient temperature and the frequency. When the Power
signal is cancelled by indoor, the Power operation will stop.
2) Soft operation
When receiving the Soft operation signal from indoor, the unit will operate as the set frequency by
EEPROM. Fan speed will depend on the ambient temperature and the frequency. When the Soft
signal is cancelled by indoor, the Soft operation will stop.
3) Time shorting operation
When receiving the time shorting signal, the unit will perform the 1/60 time shorting operation.
4) Compulsory cooling operation
When receiving the compulsory cooling signal from indoor unit, the unit will execute the compulsory
cooling operation at the frequency sent from indoor. Only discharging temperature protection and
current protection are valid, all the other protections are invalid.
5) Manual defrosting
When receiving the manual defrosting signal from indoor, the unit will enter the defrosting operation
immediately. The interval between two manual defrosts is at least 3 minutes. If the communication
protoco has not the set, this function is not available.
6) Rated operation
When receiving the rated operation signal from indoor, the unit will operate at the frequency and fan
speed set by EEPROM, meanwhile, all the protections are valid.
8.2.14 Outdoor indicator
Five-indicator combination shows the failure code.
4-bit dip switch: the normal position is OFF.
First bit: ON, compulsory cooling. Normal state is OFF.
Second bit: ON, compulsory heating. Normal state is OFF.
Third bit: ON, backup operation (outdoor ambient temp.). Normal state is OFF.
Fourth bit: ON, DC fan motor (OFF, AC fan motor), it will be adjusted due to the actual fan motor.
Commercial Air Conditioner
Low pressure switch
failure
Temperature cutoff
protection
-63-
AD182AMERA, AS182AVERA
Low pressure switch acts for 30 seconds
contineously
Model: AU182AFERA