Toshiba MD-VNK802HEXE, Руководство по обслуживанию

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*1 Reading the settings from the EEPROM
(Read both the setting data adjusted locally and the factory default setting data.)
(1) Press and hold the + + buttons for 4 seconds or longer.
1
(this number indicates the one in
"<Remote controller> NRC-01HE" on page 3)
• While performing group operation control with the air conditioners, the unit No. displayed first represents the header
Indoor unit. The Code (DN) is displayed. In addition, the fans of the selected indoor unit and the Air to Air Heat
Exchanger with DX Coil Unit start running, and the louver of the indoor unit starts swinging.
(2) Press the left part of the button to display the indoor unit No. and the Air to Air Heat Exchanger with DX
Coil Unit No. one by one in the group control.
2
Specify the UNIT No. of the Air to Air Heat Exchanger with DX Coil Unit to replace.
• The fan of the selected Air to Air Heat Exchanger with DX Coil Unit starts running.
(3) Press the buttons to move up / down through the Codes (DN).
3
(4) Change the Code (DN) from to . (Set the filter sign lighting time)
Write down the displayed data.
(5) Use the buttons to change the Code (DN).
Write down the displayed data.
(6) Repeat Step 5 and write down the setting data described in the table on page 4 (example).
• The CODE (DN) is – . Some Codes (DN) may be skipped.
(7) When you have finished writing down all the data, press the button to return to the normal stop status.
6
(It takes approximately one minute until you can operate the remote controller.)
*2 Replacing the PC board for service
(1) Replace the PC board with the one for service.
Apply the settings of the changeover switch (SW701)
as before to the PC board for service. (See the right)
(2) You need to make a pair of the indoor unit and remote controller.
Depending on the system configuration, turn on the power of the indoor unit in either of the following:
A) Single (individual) operation
Turn on the indoor unit, and then proceed to *3 .
B) Group operation
•If only the replaced indoor unit can be turned on
Turn on the replaced indoor unit only, and then proceed to *3 .
•If indoor units cannot be turned on individually (Case 1)
1.Temporarily remove the group wires connected to the terminal boards A and B of the replaced indoor unit.
2.Connect only the remote controller wire to the removed terminal board, turn on the indoor unit, and then
proceed to *3 .
*If the above procedure is not possible, follow the Case 2 procedure below:
•If indoor units cannot be turned on individually (Case 2)
1.Disconnect all the CN41 connectors of the indoor units other than the replaced one in the same group.
2.Turn on the indoor unit, and then proceed to
*3 .
* After the *3 procedure is complete, restore the group wires or CN41 connectors removed temporarily.
Pulse / Level switch
SW701 (No. 1, 2)
No. 1 Pulse : ON
Level : OFF (External input)
No. 2 Pulse : OFF Level : ON (HA input)
Required Codes
DN Content
10 Type
11 Unit capacity
12 Line address
13 Indoor unit address
14 Group address
Pulse / Level switch
No. 1 Pulse : ON
Level : OFF (External input)
No. 2 Pulse : OFF Level : ON (HA input)
(Factory setting : No.1 Level, No. 2 Pulse)
Switches
on the
circuit board
Indoor unit
(Case 1) (Case 2)
PC board
Indoor unit
PC board
Indoor unit (Replaced)
Service PC board
Indoor unit
PC board
Indoor unit
PC board
Indoor unit (Replaced)
Service PC board
Group wire
Remote controller
Group wire
Remote controller
Remove the group wires
connected to the terminal
boards A and B of the
replaced indoor unit, and
connect the remote
controller only.
Disconnect the CN41
connectors of the indoor units
other than the replaced one in
the same group.