AH-X079E/X099E
AY-X079E/X099E
2-2 Frequency control
(1) AC current peak control
Set value (Normal)
Model
During coolingDuring heating
AU-X079E5.8A
AU-X099E6.0A
AE-X079E5.8A6.3A
AE-X099E6.0A6.5A
(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 15 Hz 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 (Lower 5Hz)
Operating FrequencyAbove
92 to
88 to
83 to
75 to
50 to
43 to
Below
92Hz88Hz83Hz75Hz50Hz43Hz37Hz37Hz
During Normal Operation 51uC52uC53uC54uC53uC52uC50uC46uC
During Full Power Operation54uC56uC57uC58uC56uC55uC52uC49uC
Overheating prevention line 2 (Lower 10Hz)
Operating FrequencyAbove
92 to
88 to
83 to
75 to
50 to
43 to
Below
92Hz88Hz83Hz75Hz50Hz43Hz37Hz37Hz
During Normal Operation 53uC54uC55uC56uC55uC54uC52uC48uC
During Full Power Operation56uC57uC58uC60uC58uC57uC54uC51uC
(3) Control for prevention of outdoor heat exchanger overheating
If the temperature of the outdoor heat exchanger exceeds the overheating prevention lone 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 15 Hz without the temperature of the outdoor heat exchanger decreasing and this
condition lasts for 1 minute, the compressor will be stopped.
Overheating prevention line 156uCLower 5Hz once every 60 seconds
Overheating prevention line 158uCLower 15Hz once every 120 seconds
Overheating prevention line 155uC
(4) Control for prevention of discharge overheating
If the discharge temperature exceeds approximately 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 104uC, the frequency is raised by approximately 5 Hz once every 60 seconds, and
normal operation is restored.
If the frequency is lowered to 15 Hz without 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, 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 2uC, normal operation is restored.
19 |
ACEC
