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The maximum current value is changed to 14A (for CU-KE30NKU) or 17A (for CU-KE36NKU) to prevent power
breaker tripping. (It is set to 24A (in cooling) or 22A (in heating) when the unit is delivered from the factory.)
<Maximum Current Value Change Procedure>
(1) Remove the inspection panel.
Refer to Fig. 2 in " Noise Reducing Control" for details.
(2) When the switch No.2 of the dip switch (SW01) on the control P.C.Board is turned ON,
the maximum current value change. (Fig. 4)
Maximum Current Value Change Function
< CU-KE30NKU >
Current Value on
the Point C
Current Value
on the Point B
Current Value
on the Point A
In cooling
operation
In heating
operation
< CU-KE36NKU >
Current Value on
the Point C
Current Value
on the Point B
Current Value
on the Point A
(25.0)
22.0
21.6
(25.0)
22.0
21.6
(25.0)
24.0
23.6
(25.0)
23.5
23.1
In cooling
operation
In heating
operation
Dip Switch (SW01)
Switch No.2
ON
OFF
Max. Current Value
CU-KE30NKU CU-KE36NKU
14.0A 17.0A
22.0A 24.0A
1. When the high load is given (Outside temperature is high in the cooling operation, or
outdoor temperature is low in the heating operation), the capacity is reduced.
When the maximum current value change function is to be enabled, make sure to receive
the approval of the client.
2. The maximum capacity for cooling or heating operation is about as much as the rated
capacity.
NOTE
Description of function
Example of operation for heating
Frequency
Frequency Current
Stops operation
Approx.3 minutes
Power Point C
Point B
Point A
Target
frequency
Operates at the target frequency at Point A and below.
Stops increases to the frequency between Points A and B.
Reduces the frequency by 1 Hz per 0.5 seconds when Point B is exceeded.
Stops operation, and restarts it appoximately 5 minutes later, if Point C is
exceeded.
(May operate when sudden voltage fluctuations occur. Indicates trouble.)
•
•
•
•
Fig.4 Control P.C.Board
SW01
Dip switch (SW01)
ON
12
Power lamp
38