Sharp AH-X08CR Service Manual page 19

2-2 Frequency control
(1) AC current peak control
S e t v a l v e
M o d e l
C o o l
A E - X 0 8 C R 7 . 0 A
A E - X 1 0 C R 7 . 0 A
7 . 9 A
A E - X 1 3 C R
A U - X 0 8 C R 6 . 0 A
A U - X 1 0 C R 6 . 5 A
7 . 9 A
A U - X 1 3 C R
(2) Control for prevention of indoor heat exchanger overheating. If the temperature of the indoor heat exchanger
exceeds the overheating prevention line 1 or 2 during heating, the operating frequency is lowered by approximately
5 to 10 Hz. After that, the frequency is lowered by approximately 5Hz once every 60 seconds or 10 Hz once every
120 seconds. When the temperature of the indoor heat exchanger goes below the overheating prevention line 1,
the frequency is raised by approximately 5 Hz once every 60 seconds, and normal operation is restored.
If the frequency is lowered to minimum frequency without the temperature of the outdoor heat exchanger
decreasing and this condition lasts for 1 minute, the compressor will be stopped.
Operating frequency
During normal operation
During full power operation
Operating frequency
During normal operation
During full power operation
(3) Control for prevention of outdoor heat exchanger overheating. If the temperature of the outdoor heat exchanger
exceeds the overheating prevention line 1 or 2 during cooling, the operating frequency is lowered by approximately
5 to 15 Hz.
After that, the frequency is lowered by approximately 5 once every 60 seconds or approximately 15Hz once every
120 seconds. When the temperature of the outdoor heat exchanger goes below the overheating prevention clear
line, the frequency is raised by approximately 5 Hz once every 60 seconds, and normal operation is restored. If the
frequency is lowered to minimum frequency without the temperature of the outdoor heat exchanger decreasing and
this condition lasts for 1 minute, the compressor will be stopped.
Overheating prevention line 1
Overheating prevention line 2
Overheating prevention clear line 2
4) Control for prevention of discharge overheating
If the discharge temperature exceeds approximately (AU-X13CR:101°C except AU-X13CR:105°C) during
compressor operation, the operating frequency is lowered by approximately 5 Hz. After that, the frequency is
lowered by approximately 5 Hz once every 60 seconds. When the discharge temperature goes below approximately
(AU-X13CR:100°C except AU-X13CR:104°C) , the frequency is raised by approximately 5 Hz once every 60
seconds, and normal operation is restored.
If the frequency is lowered to minimum frequencywithout the discharge temperature decreasing and this condition
lasts for 1 minute, the compressor will be stopped.
(5) Control for prevention of indoor heat exchanger freezing
If the temperature of the indoor heat exchanger goes below approximately 5°C during cooling(only Full power
operation), the operating frequency is lowered by approximately 5 Hz. After that, the frequency is lowered by
approximately 5 Hz once every 60 seconds. When the temperature of the indoor heat exchanger rises above
approximately 5°C, the frequency is raised by approximately 5 Hz once every 60 seconds, and normal operation is
restored.
If the temperature of the indoor heat exchanger goes down to approximately 0°C and this condition continues for
4 minutes, the compressor is stopped.
When the temperature rises above approximately 2˚C, normal operation is restored.
H e a t
6 . 5 A
8 . 5 A
1 0 . 5 A
120Hz ~ 113Hz
AE-X13CR
~ 90Hz
88Hz ~
AE-X08CR
AE-X10CR
~ 92Hz
[˚C] 46.11 49.59
[˚C] 49.14 51.87
120Hz ~ 113Hz
AE-X13CR
~ 90Hz
88Hz ~
AE-X08CR
AE-X10CR
~ 92Hz
[˚C] 48.26 51.87
[˚C] 51.41 51.87
56˚C
Lower 5Hz once every 60 seconds
Lower 15Hz once every 120 seconds
58˚C
55˚C
Overheating prevention line 1 (Lower 5Hz)
106Hz 100Hz~ 50Hz~
83Hz ~ 75Hz ~ 50Hz ~
~ 88Hz ~ 83Hz ~ 75Hz
51.87 53.29 54.26
54.75 56.25 58.32
Overheating prevention line 2 (Lower 10Hz)
106Hz 100Hz~ 50Hz~
83Hz ~ 75Hz ~ 50Hz ~
~ 88Hz ~ 83Hz ~ 75Hz
51.87 55.24 56.25
53.77 58.32 59.94
23
AH/AY-X08CR
AH/AY-X10CR
AH/AY-X13CR
43Hz~ 37Hz ~ ~ 37Hz
43Hz ~ 37Hz ~ ~ 37Hz
~ 50Hz ~ 43Hz
53.29 52.34 51.41
56.76 55.74 54.26
43Hz~ 37Hz ~ ~ 37Hz
43Hz ~ 37Hz ~ ~ 37Hz
~ 50Hz ~ 43Hz
55.24 54.26 53.29
58.32 57.27 56.25