Mitsubishi Heavy Industries FDT28KXE6A Service Manual page 182

③ Remote Control, Wiring and functions (continued)
Control plural indoor units by a single remote controller
① A remote controller can control plural indoor units (up to 16)
In above setting, all plural indoor units will operate under same mode and temperature setting.
② Connect all indoor units with 2 core remote controller line for group control.
③ Use the function of manual address setting to set the indoor and outdoor address number.
○Do not forget to set the number for the outdoor units.
④ As shown in the following figure, the remote control can be used to control multiple outdoor
units.
⑤ One remote control is able to perform group control for multiple units (maximum 16 units).
○Use the rotary SW1 and SW2 provided on the indoor unit PCB (Printed circuit board) to set unique remote control
communication address avoiding duplication.
After a unit is energized, it is possible
to display an indoor unit address by
Indoor unit
p re s si n g b u t ton o n
AIR CON NO
Outdoor No.01
the remote control unit.
Indoor No.01
Press the or button to make
sure that all indoor units connected
are displayed in order.
Indoor unit
Outdoor No.01
Indoor No.02
Indoor unit
Outdoor No.01
Indoor No.03
Confirming method of indoor units
When indoor unit address number is displayed on
remote controller, pushing the (MODE)
button to make the indoor unit with that number
blow air (Display example:" ").
Push the (MODE) button again to stop the
operation.
However, this operation is invalid on the
air-conditioning running.
Wired remote controller: SW1
Wireless kit: SW1-2
Master/slave setting when more than one remote control unit are used
A maximum of two remote control units can be connected to one indoor unit (or one group of
indoor units.)
Latest "function setting" is superior than previous one.
Acceptable combination is "two (2) wired remote controllers", "one (1) wired remote controller
and one (1) wireless kit" or "two (2) wireless kits".
Set SW1 to "Slave" for the slave remote control unit. It was factory set to "Master" for shipment.
Note:The setting "Remote control unit sensor enabled" is only selectable with the master
remote control unit in the position where you want to check room temperature.
④ Trial operation
The method of trial cooling operation
Operate the remote control unit as follows.
1. Starting a cooling test run.
①Start the system by pressing the
②Select " (Cool)" with the (MODE) button.
③Press the button for 3 seconds or longer.
TEST
The screen display will switch to: "
④When the (SET) button is pressed while "
run will start.
The screen display will switch to "
2. Ending a cooling test run.
Pressing the button, the
cooling test run. (Cooling test run will end after 30 minutes pass.)
" " shown on the screen will go off.
Outdoor unit Outdoor unit
No.01 No.02
Ⓐ Ⓑ Ⓐ Ⓑ
Indoor unit
Ⓐ Ⓑ
Ⓐ Ⓑ
Outdoor No.02
Ⓧ Ⓨ
Ⓧ Ⓨ
Indoor No.04
Indoor unit
Ⓐ Ⓑ
Ⓐ Ⓑ
Outdoor No.02
Ⓧ Ⓨ Ⓧ Ⓨ
Indoor No.05
Indoor unit
Ⓐ Ⓑ Ⓐ Ⓑ
Outdoor No.02
Ⓧ Ⓨ Ⓧ Ⓨ
Indoor No.06
Remote controller line
(No polarity)
Ⓧ Ⓨ
Action time
Indoor unit
Ⓧ Ⓨ
Remote controller line
(No polarity)
Ⓧ Ⓨ Ⓧ Ⓨ
Action time Action time
SW1" Master" SW1" Slave"
Switch Setting Contents
Master remote
Master
controller
Slave remote
Slave
controller
button.
"
" is indicated, a cooling test
".
(TEMP) button or (MODE) button will end a
④ Trial operation (continued)
Checking operation data
Operation data can be checked with remote control unit operation.
1. Press the button.
The display change "
2. Press the (SET) button while "
3.When only one indoor unit is connected to remote controller, "
(blinking indication during data loading).
Next, operation data of the indoor unit will be displayed. Skip to step 7.
4. When plural indoor units is connected, the smallest address number of indoor unit among all
connected indoor unit is displayed.
[Example]:
" " (blinking 1 seconds)
5. Select the indoor unit number you would like to have data displayed with the
6. Determine the indoor unit number with the
(The indoor unit number changes from blinking indication to continuous indication)
" " (The address of selected indoor unit is blinking for 2 seconds.)
" " (A blinking indication appears while data loaded.)
Next, the operation data of the indoor unit is indicated.
7. Upon operation of the
data number 01.
The items displayed are in the following table.
※Depending on models, the items that do not have corresponding data are not displayed.
8. To display the data of a different indoor unit, press the
to go back to the indoor unit selection screen.
9. Pressing the
Pressing the (RESET) button during remote control unit operation will undo your last
operation and allow you to go back to the previous screen.
◎If two (2) remote controllers are connected to one (1) inside unit, only the master controller is available
for trial operation and confirmation of operation data. (The slave remote controller is not available.)
Number
01
02
03
04
05
06
07
08
09
10
11
12
21
22
23
24
25
26
27
28
29
34
35
36
37
38
39
Trail operation of drain pump
Drain pump operation from remote control unit is possible. Operate a remote control unit by
following the steps described below.
1. To start a forced drain pump operation.
①Press the TEST button for three seconds or longer.
The display will change "
②Press the button once and cause "
③When the (SET) button is pressed, a drain pump operation will start.
Display: " "
2. To cancel a drain pump operation.
①If either (SET) or
stop. The air conditioning system will become OFF.
◎If two (2) remote controllers are connected to one (1) inside unit, only the master controller is available
for trial operation and confirmation of operation data. (The slave remote controller is not available.)
79
- -
"
" is displayed.
" " blinking.
(SET) button.
button, the current operation data is displayed in order from
button, which allows you
button will stop displaying data.
Data Item
(Operation Mode)
(Set Temperature)
(Return Air Temperature)
(Remote Controller Thermistor Temperature)
(Indoor Unit Heat Exchanger Thermistor / U Bend)
(Indoor Unit Heat Exchanger Thermistor /Capillary)
(Indoor Unit Heat Exchanger Thermistor /Gas Header)
(Indoor Unit Fan Speed)
(Frequency Requirements)
(Response Frequency)
(Pulse of Indoor Unit Expansion Valve)
(Total Running Hours of The Indoor Unit)
(Outdoor Air Temperature)
(Outdoor Unit Heat Exchanger Thermistor)
(Outdoor Unit Heat Exchanger Thermistor)
(Compressor Frequency)
(High Pressure)
(Low Pressure)
(Discharge Pipe Temperature)
(Comp Bottom Temperature)
(Current)
(Outdoor Unit Fan Speed)
(63H1 On/Off)
(Defrost Control On/Off)
(Total Running Hours of The Compressor)
(Pulse of The Outdoor Unit Expansion Valve EEVC)
(Pulse of The Outdoor Unit Expansion Valve EEVH)
"
" to be displayed.
button is pressed, a forced drain pump operation will
" is displayed
button.
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