Input Current Control - Daikin H Series Service Manual

Control Specification
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 model, this control which is the upper limit control of the frequency takes
priority to 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 pulled down by 2 Hz every second until it reaches the keep
Keep zone
 The present maximum frequency goes on.
Reset zone
 Limit of the frequency is canceled.
A (A)
B (A)
C(A)
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
Function and Control
(A)
A
B
C
Input current
zone.
Cooling Heating
20.0
19.0
18.0
on the model).
Compressor Stop
Stop Zone
Dropping Zone
Keep Zone
Reset Zone
SiUS04-924_A
(R14712)
33