Mitsubishi Heavy Industries FDC280KXZE1 Service Manual page 154

SW5-2
Outdoor PCB
SW1, 2 (green)
(1) In the case of a single refrigerant system installation
Address setting of outdoor unit
Indoor unit address setting
Set as follows before you turn on power.
Make sure that the Indoor Unit No. switch is set to 000 [in the case of previous SL: 49] (factory setting).
Make sure that the Outdoor Unit No. switch is set to 49 (factory setting).
Turn on power in order from the outdoor unit to indoor units. Give a one-minute or longer interval for them. Unlike the procedure set out in (2) below, you need not change settings from the 7-
segment display panel.
Make sure that the number of indoor units indicated on the 7-segment display panel agrees with the number of the indoor units that are actually connected to the refrigerant system.
(2) In the case of a multiple refrigerant systems installation (Applicable to new SL only. In the case of previous SL, set addresses with some other method.)
(This option is available when the interconnection wiring among refrigerant systems is on the outdoor side and new SL is chosen as the communication protocol.)
Address setting procedure
(perform these steps for each outdoor unit)
[STEP1]
(Items set before turning on power)
Address setting of outdoor unit
Address setting of indoor unit
Make sure that the Indoor Unit No. switch is set to 000 (factory setting).
Make sure that the Outdoor Unit No. switch is set to 49 (factory setting).
Isolate the present refrigerant system from the network.
Disengage the network connectors (white 2P) of the outdoor units. (Turning on power without isolating each refrigerant system will result in erroneous address setting.)
[STEP2]
(Power on and automatic address setting)
Turn on power to the outdoor unit
Turn on power in order from the outdoor unit to indoor units. Give a one-minute or longer interval for them.
Select and enter "1" in P31 on the 7-segment display panel of each outdoor unit (master unit in case of combination) to input "Automatic address start."
Input a starting address and the number of connected indoor units.
Input a starting address in P32 on the 7-segment display panel of each outdoor unit (master unit in case of combination).
When a starting address is entered, the display indication will switch back to the "Number of Connected Indoor Units Input" screen.
Input the number of connected indoor units from the 7-segment display panel of each outdoor unit (master unit in case of combination). Please input the number of connected indoor units (on
the same refrigerant line in case of combination) for each outdoor unit. (You can input it from P33 on the 7-segment display panel.)When the number of connected indoor units is entered, the 7-
[STEP3]
(Automatic address setting completion check)
Indoor unit address determination
If an error is detected in this process, the display will show "A
Check the 7-segment display panel of each outdoor unit (master unit in case of combination).
Depending on the number of connected indoor units, it may take about 10 minutes before the indoor unit addresses are all set.
[STEP4]
Network connection
Network polarity setting
After you have made sure that the network connectors are engaged , select and enter "1" in P34 on the 7-segment display panel of any outdoor unit (on only 1 unit : master unit in
case of combination) to specify network polarity.
Network setting completion check
3 minutes after.
OFF
Indoor unit power source
OFF
Outdoor unit power source
indoor000/outdoor 49
Indoor unit
( factory setting
(indoor/outdoor No.SW)
Outdoor unit (outdoor No.SW) 01,03(Ex
Network connectors Disconnect(each outdoor unit)
Start automatic address setting
Set starting address
Set the number of indoor unit
Polarity setting
7-segment display
Indoor No. switch (The hundred's Place) [OFF : 0, ON : 1]
For setting outdoor No. (The ten's and one's)
Before turning on the power, set as follows.
the outdoor No. switch is set at 49 by the default.
• In the same way also on the master unit of combination,
• In the same way also on the slave unit of combination,
When 2 units are combined, set the dip switch SW4-7 of slave unit to ON. When 3 units are combined, set the dip switch 4-7 of slave unit 1 to ON
and the dip switch SW4-8 of slave unit 2 to ON.
Outdoor unit SW1 SW2 SW4-7 Address on network
Master 4 9 OFF 49
Slave 4 9 ON 00
Before turning on the power, set as follows.
Set the outdoor No. switches in a range of 00 – 31.
Take care not to duplicate with other outdoor unit No. on the network.
In the same way also on the master unit of combination, set the rotary switch for outdoor No. in a range of 00 - 31
For slave units of combination, set the rotary switches for outdoor No. at the same outdoor No. as the master unit of combination.
When 2 units are combined, set the dip switch SW4-7 of slave unit to ON. When 3 units are combined, set the dip switch SW4-7 of slave unit 1 to
ON and the dip switch SW4-8 of slave unit 2 to ON. (Use same setting for outdoor No. of master unit and slave unit.)
Before turning on the power, set as follows.
-
."
-
STEP1 STEP2
ON
ON
Select "Automatic Address Start"
on each outdoor unit.
outdoor 01: 01 (Ex)
outdoor 03: 04 (Ex)
outdoor 01: 03 (Ex)
outdoor 03: 03 (Ex)
AUX (Blink
For ten's place
Outdoor unit SW1 SW2 SW4-7
Master 4 9 OFF
Slave 1 4 9 ON
Slave 2 4 9 OFF
engage the network connectors again.
STEP3
"AUE"(blink), or "A
152
- -
groove and turn the arrow to
point a desired number.
For one's place
'14 • KX-SM-202
at 49 by the default.
at 49 by the default.
SW4-8 Address on network
CAUTION
If the slave unit is not
OFF 49
OFF 00
failure may result.
ON 01
ion is made from the 7-segment display panel or
STEP4
Connect(each outdoor unit)
Set in P34 on the 7-segment display
panel of any outdoor unit.
" in error events. End