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SiUS092230EA
Control Specification
Part 4 Functions and Control
85
5.5 Input Current Control
Outline
The microcomputer calculates the input current while the compressor is running, and sets the
frequency upper limit based on the input current.
In case of heat pump models, this control is the upper limit control of the frequency and takes
priority over the lower limit control of four way valve operation compensation.
Details
Frequency control in each zone
Stop zone
After the input current remains in the stop zone for 2.5 seconds, the compressor is stopped.
Dropping zone
The upper limit of the compressor frequency is defined as operation frequency – 2 Hz.
After this, the output frequency is lowered by 2 Hz every second until it reaches the keep zone.
Keep zone
The present maximum frequency goes on.
Reset zone
Limit of the frequency is canceled.
Limitation of current dropping and stop value according to the outdoor temperature
The current drops when outdoor temperature becomes higher than a certain level
(depending on the model).
09/12 class
15 class
18 class
24 class
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
A
(A)
12
12
12
12.5
18
B
(A)
7
7.5
8
10
10.75
12
11.5
C
(A)
6
6.5
7
9
9.75
11
10.5
Compressor Stop
Input current
Dropping zone
Stop zone
Keep zone
Reset zone
(R23249)
A
(A)
B
C
Summary of Contents for RX-W Series
Page 1: ... Applied Models Inverter Pair Heat Pump Service Manual SiUS092230EA Inverter Pair RX W Series ...
Page 207: ...SiUS092230EA Check Part 6 Service Diagnosis 201 15 18 24 class R25105 1 2 3 4 Multimeter ...
Page 209: ...SiUS092230EA Check Part 6 Service Diagnosis 203 15 18 24 class R20704 W V U DC_P1 DC_N1 ...
Page 239: ...SiUS092230EA Piping Diagrams Part 8 Appendix 233 RX24WMVJU9 3D141502 ...