Service manual

Control Specification SiBE06-708_C
64 Function and Control
3.5 Input Current Control
Outline The microcomputer calculates the input current while the compressor is running, and sets the
frequency upper limit from the input current.
In case of heat pump models, this control which is the upper limit control of the frequency takes
priority over the lower limit of control of four way valve operation compensation.
Detail
Frequency control in each zone
Stop zone

After 2.5 seconds in this zone, 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).
RK(X)S25F2V1B RK(X)S25G2V1B
RK(X)S25G2V1B9
RXS25J2V1B
RXS25K2V1B
RXS25K3V1B
Cooling Heating Cooling Heating Cooling Heating Cooling Heating
A
(A) 9.25 9.25 9.25 9.25
B
(A) 6.0 7.5 6.5 7.5 6.25 7.5 7.5
C
(A) 5.25 6.75 5.75 6.75 5.5 6.75 6.75
RK(X)S35F2V1B
RK(X)S35G2V1B
RK(X)S35G2V1B9
RXS35J2V1B
RXS35K2V1B
RK(X)S50F2V1B
RK(X)S50G2V1B
RXS50J2V1B
RXS50K2V1B
Cooling Heating Cooling Heating Cooling Heating Cooling Heating
A
(A) 9.25 9.25 20.0 20.0
B
(A) 7.25 8.25 8.25 10.0 15.0 13.0 15.0
C
(A) 6.5 7.5 7.5 9.0 14.0 12.0 14.0
Compressor Stop
Input current
Dropping Zone
Stop Zone
Keep Zone
Reset Zone
(R14643)
A
(A)
B
C