Haier AD182AMERA Service Manual page 60

R: rise at the speed of 1Hz/10s
8.2.4 Overcurrent protection(realised by power module)
●In the course of compressor startup, if current is over 21A and keeps for 4 seconds, compressor
will stop and the unit alarms. 3 minutes later, compressor will re-start up, if in 10 minutes, it occurs for
3 times, the unit will stop and alarm.
●Overcurrent reducing frequency protection
When currentn is over 13.9A, compressor will reduce frequency at 1HZ/s, and will stop until it is
below 12A, then rise frequency at 1HZ/20s; when current is below 12A, it will resume the target
frequency.
Remarks: Power module frequency limited point: 88℃, if the frequency reduces down to 86℃, but if
it is up to 90℃, the unit will stop and alarm.
8.2.5 Indoor heat exchanger anti-freezed protection
9℃
5℃
When T 〈 5℃, compressor frequency will reduce at 1HZ/10s
C
When T begins to rise up, and 6〈=T
C
When 9℃≤T the frequency will rise up at 1HZ/10s
C,
When 12℃≤T , the frequency will rise up at 1HZ/s
C
8.2.6 Outdoor temperature limitation
Cool: When outdoor temperature is below 15℃, in cooling, compressor frequency will be limited
below 50Hz, and outdoor fan speed is compusorily Class-1.
Heat: When outdoor temperature is over 20℃, in heating, compressor frequency will be limited
below 50Hz, and outdoor fan speed is compulsorily Class-1.
If the above is AC motor, the compulsory fan speed will be low speed.
8.2.7 Rated operation
Rated cooling:
●
When receiving the indoor rated operation command, the unit will enter rated cooling operation.
Rated heating:
When receiving the indoor rated operation command, the unit will enter rated cooling operation.
When receiving the indoor min. heating operation command, the unit will enter min. heating
operation.
In rated operation period, the frequency can be adjusted by manual. Once being adjusted by
manual, the unit will not receive the indoor frequency.
8.2.8 Outdoor compulsory operation
Compulsory cooling operation
Commercial Air Conditioner
〈=8℃, compressor frequency will remain
C
-60-
AD182AMERA, AS182AVERA
11℃
8℃
6℃
Model: AU182AFERA