7-2. Test run
Before test run
• Before turning on the power supply, carry out the following procedure.
1. By using an insulation tester (500 VMΩ), check that resistance of 1 MΩ or more exists between the terminal block L
to N and the earth (grounding). If resistance of less than 1 MΩ is detected, do not run the unit.
2. Check the valve of the outdoor unit being opened fully.
• To protect the compressor at activation time, leave power-ON for 12 hours or more before operating.
• Do not press the electromagnetic contactor to forcibly perform a test run. (This is very dangerous because the
protective device does not work.)
CAUTION
Be careful of the long - time forced operation because it may result in break.
Perform the test run check with cooling/heating, and check that it is satisfactory with the whole system.
SW Bit
Funct
ion Name
SW501
No function
TA / TF type switching
Interface P.C.board function setting exchange table
When operating the SW, turn off the power before setting.
OFF
(Default)
ON
Detail
1
- - -
2
TA type TF type
The default is TA type. For TF type, turn
on Bit2. if Bit3 in ON, the Bit2 setting is
invalid.
DDC type switching
3
No function DDC type For DDC type, turn on Bit3.
DDC c
apacity control
4
Stepped
Linear
Change the capacity control method at
0 - 10V. Refer to the functions of AI3.
SW502
1
2
3
No function
- - -
4
Forced capacity control
None
Controlled
Refer to the functions of DI2 / *DI2 ~
*DI4 / DI4.
SW503
-
Output signal selection
(RSW)
- -
Refer to the functions of DO5
/ *DO5 and
DO6 / *DO6
SW504
-
- -
SW505
1
2
3
No function
- - -
4
DI1 input inversion
Close Open Refer to the functions of DI1.
SW506
1
2
3
No function
4
Modbus baud rate
Refer to right table
Bit1 Bit2 Baud rate
OFF OFF
9600
ON OFF
19200
OFF ON
38400
ON ON
57600
No function
- - -
- - -
SW507
1 Modbus address setting
(RSW)
Refer to "Modbus setting method" in this
Installation Manual.
- -
SW701
1
Voltage / non-voltage switching SW Voltage
Refer to the functions of DI1 / *DI1.
SW801
RS-485 terminating resistance
setting
Open 120 ohm Refer to the "Modbus setting method" in this
Installation Manual.
2
N
o function
- - -
Non-Voltage
1
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