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(4) Operation control function by the outdoor controller
(Ⅰ) Micro inverter series
(a)
Determination of compressor speed (frequency)
Required frequency
1)
Cooling/dehumidifying operation
Max. required
frequency
Min. required frequency
2)
Heating operation
Max. required
frequency
Min. required frequency
3)
If "Silent mode start" signal is received from the remote controller, the maximum required frequency becomes same as
when the indoor air flow is set at "Lo".
4)
Max. required frequency under high outdoor air temperature in cooling mode
Maximum required frequency is selected according to the outdoor air temperature (Tho-A).
Max. required
frequency
5)
Max. required frequency under outdoor air temperature in heating mode
Maximum required frequency is selected according to the outdoor air temperature (Tho-A).
Max. required
frequency
6)
Selection of max. required frequency by heat exchanger temperature
1)
Maximum required frequency is selected according to the outdoor unit heat exchanger temperature (Tho-R) during
cooling/dehumidifying or according to the indoor unit heat exchanger temperature (Th
2)
When there are 3 indoor unit heat exchanger temperatures (Th
Max. required
frequency
7)
When any of the controls from 1) to 6) above may duplicate, whichever the smallest value among duplicated controls
is taken as the maximum required frequency.
8)
During heating, it is operated with the maximum required frequency until the indoor unit heat exchanger temperature
becomes 40°C or higher.
(b)
Compressor start control
1)
Compressor starts upon receipt of the thermostat ON signal from the indoor unit.
2)
However, at initial start after turning the power supply breaker, it may enter the standby state for maximum 30 minutes
("
PREPARATION" is displayed on the remote controller) in order to prevent the oil loss in the compressor.
If the cooling/dehumidifying/heating operation is selected from the remote controller when the outdoor unit is in the
standby state, "
Model
Indoor unit air flow "P-Hi", "Hi"
Indoor unit air flow "Me", "Lo"
Model
Indoor unit air flow "P-Hi", "Hi"
Indoor unit air flow "Me", "Lo"
Model
Outdoor air temperature is
40°C or higher
Outdoor air temperature is
46°C or higher
Model
Outdoor air temperature is
18°C or higher
Outdoor air temperature is
10°C or higher
Model
Cooling/
Outdoor unit heat exchanger
dehumidifying
temperature is 56°C or higher
Indoor unit heat exchanger
Heating
temperature is 56°C or higher
PREPARATION" is displayed for 3 seconds on the remote controller.
100
125
90
105
60
80
20
20
100
125
90
105
60
80
20
20
100
125
75
90
75
75
100
125
60
80
90
105
-R), whichever the highest applies,
I
100
125
90
100
90
100
99
-
-
'11 • PAC-T-160
ESP-FP-1747
Unit: rps
140
200
250
105
100
120
85
70
80
20
30
30
Unit: rps
140
200
250
110
100
120
85
70
80
20
30
30
Unit: rps
140
200
250
96
75
98
75
66
66
Unit: rps
140
200
250
85
70
80
110
100
120
-R) during heating mode.
I
Unit: rps
140
200
250
100
100
120
100
100
120
V
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Table of Contents
Troubleshooting
