The maximum current value is changed to 15.0A or 13.5A to prevent power breaker tripping.
(It is set to 20A when the unit is delivered from the factory.)
<Maximum Current Value Change Procedure>
(1) Remove the right front cover.
Refer to Fig. 2 in "7-3-1 Noise Reducing Control" for details.
(2) When the switch No.1 of the dip switch (SW02) on the control P.C.Board is turned ON,
the maximum current value change function is available. (Fig. 4)
(3) Using the switch No.2 of the dip switch (SW02) on the control P.C.Board, the maximum current
value is changed. (Fig. 4)
7-3-2. Maximum Current Value Change Function
• In cooling or heating operation
Max. Current Value
Current Value
on the Point B
Current Value
on the Point A
15.0A
13.5A
15.0A
13.5A
13.8A
12.3A
Dip Switch
ON
OFF
SW02
Max. Current Value
13.5A
15.0A
Fig.4 Control P.C.Board
ERR0
SW01
SW02
Dip switch (SW02)
ON
1 2
SW02
Power lamp
ERR1
ERR2
ERR3
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.)
•
•
•
•
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