OPERATION AND INSTALLATION MANUAL

RM05B(A) Remote Controller

Thank you for purchasing the remote controller.

This manual describes the safety precaution requirement of using this product.
Thank you for purchasing this Midea remote controller.
Carefully read this OPERATION AND INSTALLATION MANUAL
before using the controller. It will tell you how to use the
controller properly and help you if any trouble occurs. After
reading the manual, please keep it for future reference.
Contents
Installation ................................................................. 1
1. Installation Precautions ................................... 1
2. Installation Accessories ................................... 3
3. Dimensions of Remote Controller and Bracket 3
4. Installation and Fixing ........................................ 4
5. Replace the Batteries ........................................ 5
Operating the Remote Controller .............................. 7
1. Using Precautions ............................................. 7
2. Model and Key Parameters .............................. 8
3. Button Names and Functions ......................... 9
4. Name and Function on Display Screen .......... 11
5. Operating Methods ........................................ 12
5.1 On/Off Operations ................................... 12
5.2 Mode and Temperature Operations .......... 12
5.3 Fan Speed Operations .............................. 13
5.4 Fan Direction Operations ......................... 14
5.5 Swing Operations ........................................ 14
5.6 IDU Display Operations .............................. 15
5.7 Silent Mode Operations .............................. 16
5.8 ECO Operations ........................................ 16
5.9 Timer On/Off Operations .............................. 16
5.10 Setting Operations ................................... 18
5.11 Lock Buttons Operations ......................... 18
5.12 Cooling Only/Cooling and Heating
Selection Operations .............................. 19
5.13 Auxiliary Heater Operations (reserved) ..... 19
Field Settings ............................................................ 20
1. Indoor Unit Address Query and Setting .......... 20
2. Parameter Configuration for Remote Controller ..... 22
3. Indoor Unit Capacity Code Query........................27
4Indoor Unit Parameter Check Function.................28
Installation

1. Installation Precautions

Safety Considerations
Please read this "Safety Considerations" carefully before installing
Controller and be sure to install it correctly. After completing the
installation, make sure the controller operates properly.
Please instruct the customer how to operate the controller and how to
perform maintenance.

Meaning of Caution Symbols

Failure to observe these instructions properly may result in

property damage or personal injury.
Information classified as NOTE contains instructions to ensure proper
use of the controller.
• Ensure that nothing interrupts operation of the wireless
remote controller.
• Ensure that the signal from the remote controller can easily
be transmitted.
• Ensure that the operation display lamp and other indicator
lamps can easily be seen.
• Ensure that there is neither a source of light nor a
fluorescent lamp near the receiver.
• Ensure that the receiver is not exposed to direct sunlight.
Installation

WARNING

Precautions in handling remote controller

• Direct the transmitting part of the remote controller to the receiving part of
the air conditioner.
• If something blocks the transmitting and receiving path of the indoor unit
and the remote controller as curtains, it will not operate.

• Transmitting distance is approximately 7 m.

• 1 short beeps from the receiver indicates that the transmission is properly
done.
• Do not drop or get it wet.
It may get damaged.
• Never press the button of the remote controller with a hard, pointed object.
The remote controller may get damaged.

Installation site
• It is possible that signals will not be received in rooms that have electronic
fluorescent lighting. Please consult with the salesman before buying new
fluorescent lights.
• If the remote controller operated some other electrical apparatus, move
that machine away or consult your dealer.
Installation

2. Installation Accessories
• Please check that you have all the following parts.

No. Name Schematic Qty

① Screw lid 1

② Philips head screw (M2.0*4.5) 2

③ AAA battery 2

④ Remote controller manual 1

3. Dimensions of Remote Controller and Bracket

Figure 2.1 Dimensions of remote controller

Installation

Figure 2.2 Dimensions of remote controller bracket

4. Installation and Fixing

1) Use the screws (accessories) to fix and secure the remote controller
bracket in a stable position (see Figure 2.3);
Make sure you refer to "1. Installation Precautions" to determine the
location.

Figure 2.3
Installation
2) Slide the remote controller vertically down into the remote controller
bracket (see Figure 2.4).

Figure 2.4

5. Replace the Batteries

1) Slide open the front cover of the remote controller in the direction
indicated by the arrow (see Figure 2.5);

Figure 2.5
Installation
2) Remove the battery cover (see Figure 2.6);

Figure 2.6

3) Take out the old battery and install two new AAA batteries matching
the indicated polarity (see Figure 2.7). Close the battery cover.

Figure 2.7
Operating the Remote Controller

1. Using Precautions
To gain full advantage of the controller's functions and to avoid
malfunction due to mishandling, we recommend that you read this
instruction manual carefully before use.
The precautions described herein are classified as WARNING and
CAUTION. They both contain important information regarding safety.
Be sure to observe all precautions without fail.

WARNING
Failure to follow these instructions properly may result in
personal injury or loss of life.
CAUTION
Failure to observe these instructions properly may result in
property damage or personal injury, which may be serious
depending on the circumstances.

Information classified as NOTE contains instructions to ensure proper

use of the controller.
After reading, keep this manual in a convenient place so that you can
refer to it whenever necessary. If the controller is transferred to a new
user, be sure also to hand over the manual.

WARNING
Note that prolonged, direct exposure to cool or warm air from the air
conditioner or to air that is too cold or warm can be harmful to your
physical body and health.
• Do not use pesticides, disinfectants and flammable sprays to spray
directly on the remote controller as these may cause the device to
become deformed.
• If there is a fault with the remote controller, turn off the remote
controller and contact your local agent.
• Remove the dry batteries before cleaning or maintenance of the
remote controller. Do not wash the controller with water.
Operating the Remote Controller

CAUTION
• Do not operate the device with wet hands to prevent water from
entering the remote controller and damage the circuit board.
• Do not use the air conditioner for purposes other than those for
which it is intended. Do not use the air conditioner to cool precision
instruments, food, plants, animals or works of art as this may adversely
affect the performance, quality, and/or lifespan of the object concerned.
• Ventilate the area from time to time. Be careful when you use the air
conditioner with other heating equipment. Insufficient ventilation may
result in oxygen deficiency.

2. Model and Key Parameters

Product Model RM05B(A)

Rated Voltage 3.0 V (AAA battery x 2)

Ambient Temperature -5 to 43°C

Ambient Humidity RH ≤ 90%

Operating the Remote Controller

3. Button Names and Functions

1 10

2 11

4
12

5 13

6 14

7
15

8
16

Figure 3.1 External view of remote controller

Operating the Remote Controller

No. Button Function

Set operating mode: Auto →

① Mode
Cool → Heat → Dry → Fan
Adjust the temperature setting
② Adjust downwards or timer (programmed time)
downwards

③ On/off switch Switch on/off the unit

Turn on or off the display of the

④ Display
indoor unit

⑤ Silent Turn on/off the silent function

Auxiliary heater Turn on/off the auxiliary heater

⑥
function
SET Set fan speed and temperature
⑦ Setting
adjustment steps.
LOCK
⑧ Lock Lock or unlock the buttons.

Cooling Only/
C/H Switch between Cooling Only,
⑨ Cooling and
Cooling and Heating modes.
Heating Selection

⑩ Fan speed Fan speed setting

Adjust the temperature setting

⑪ Adjust upwards or timer (programmed time)
upwards
Adjust the direction of the
⑫ Fan direction
louver

⑬ Swing Turn on/off the swing function

Turn on/off the economic

⑭ ECO
operation function

⑮ Timer on Set the time to turn on the unit

⑯ Timer off Set the time to turn off the unit

10
Operating the Remote Controller
Note:
• The buttons and are not available for first generation
indoor units.

4. Name and Function on Display Screen

Figure 3.2 Display screen of remote controller

No. Name Display Function

① Temperature Displays current temperature setting

② Operating mode Displays the current operating mode

③ ECO Shows that ECO function is on

④ Auxiliary heater Shows that auxiliary heater is on

⑤ Silent mode Shows that Silent is on

⑥ Power-on display Indicates a unit is turned on

Displays signal sent to the indoor

⑦ Signal transmission
unit from the remote controller

11
Operating the Remote Controller

Shows that the remote controller

⑧ Lock
button is locked

⑨ Timer On/Off Displays times to turn on/off the unit

⑩ Fan speed Displays the current fan speed

⑪ Swing Shows that Swing is on

5. Operating Methods
5.1 On/Off Operations
1) Press (see Figure 3.3), and the remote controller displays the
icon on its screen. Indoor unit starts to run;

Figure 3.3

2) Press again. The icon disappears from the display screen of

the remote controller, and the indoor unit stops running.
5.2 Mode and Temperature Operations
1) Press (see Figure 3.4). Display screen shows the operating
mode;

Figure 3.4

12
Operating the Remote Controller

2) Press each time to change the operating mode according to the

order shown in Figure 3.5;

Auto Cool Heat Dry Fan

Figure 3.5

3) In Auto, Cool, Dry or Heat mode, press and to adjust the

temperature setting. Press and to adjust the temperature by
1°C (default). Long press to change the temperature continuously.
Note:
• Fan speed cannot be adjusted in the Auto and Dry modes.
• Temperature setting cannot be adjusted in the Fan mode.
No Auto Mode by default, see initial settings for how to set the Auto
mode
5.3 Fan Speed Operations

Figure 3.6

1) 7 fan speeds: The default in the remote controller is the mode with 7
fan speeds, where the Fan Speed will be adjusted in turn as shown in
Figure 3.7;
Auto Speed 2 Speed 4 Speed 6 High

Auto
Speed 1 Speed 3 Speed 5 Speed 7
Figure 3.7

2) 3 fan speeds: Fan Speed will be adjusted in turn as shown in Figure

3.8.
Auto
Auto Low Mid High

Figure 3.8
Note: the default fan speed is 7 fan speeds, please refer to Field
Setting to adjust the default fan speed.Fan speeds cannot be adjusted
in Dry mode and Auto Mode.
13
Operating the Remote Controller

5.4 Fan Direction Operations

Press to adjust the direction of the louver (see Figure 3.9).

Figure 3.9

1) For second generation indoor units, there are 5 swing angles, and
the louver swings by a particular angle each time the button is pressed;
2) For first generation of indoor units, the louver will swing by about 6
degrees each time the button is pressed.
Note:
• Only valid for indoor units with vertical louvers.
• When the unit is off, the button is invalid. When the unit is
turned off, the remote controller automatically turns off the louver
direction function.
5.5 Swing Operations
1) When the unit is on. Press (see Figure 3.10). Start the swing
function, and the icon will light up, and signal is sent to the indoor
unit;

Figure 3.10

2) When the swing is on, press to turn off this function.

Note:
• When the unit is turned off, the button is invalid.
• Each time the swing signal is sent, the icon keeps lighting up for 15s
and then disappears. The indoor unit remains swing operation.

14
Operating the Remote Controller

5.6 IDU Display Operations

The Display function is used to control the on/off state of the display in
the indoor unit.
1) When the remote controller is in on or off state, press (see
Figure 3.11), and the display of the indoor unit lights up;

Figure 3.11

2) When the display of the indoor unit lights up, press to turn off
the light.

5.7 Silent Mode Operations

The Silent function is used by the remote controller to send the "Silent"
signal to the indoor unit. The indoor unit automatically optimizes the
noise it generates when it is in the "Silent" mode.
1) When the unit is in the Cool or Heat mode, press (see Figure
3.12) to start the Silent function. Screen displays the icon;

Figure 3.12

2) In Silent mode, press to turn off the Silent function, and the
icon will disappear.
Note:
• Once it has been running for 8 hours, will no longer light up, and
the unit will exit the Silent mode.
• The Silent and ECO functions cannot be implemented at the same time.

15
Operating the Remote Controller

5.8 ECO Operations

The remote controller can send the ECO signal to the indoor unit
when the unit is operating in Cool or Heat mode.
1) Press (see Figure 3.13) to send the ECO signal to the indoor
unit. The icon is displayed;
2) Then press , or to exit the ECO function. The
icon disappears.

Figure 3.13

Note:
• In cooling mode, when ECO is set up, the Fan Speed is turned to
Auto and the temperature is 26°C; in heating mode, when ECO is set
up, the Fan Speed is turned to Auto and the temperature does not
change.
• Once it has been running for 8 hours, will no longer light up, and
the unit will exit the ECO mode.
• The Silent and ECO functions cannot be implemented at the same time.

5.9 Timer On/Off Operations

"Timer" is used to set the timed on/off state of indoor unit.
1) Timer On Operation:
① Press (see Figure 3.14), and the remote controller will display
"Timer On", and "0.0h Later On" will appear in the timer area. Adjust
the Timer On settings now;

Figure 3.14

16
Operating the Remote Controller
② Press to adjust the timer settings;
③ Once the adjustment is done, the timer information is sent to the
indoor unit.
2) Timer Off Operation:
① Press (see Figure 3.15), and the remote controller will display
"Timer Off", and "0.0h Later Off" will appear in timer area. Adjust the
Timer Off settings now;

Figure 3.15

② Press to adjust the timer settings;

③ Once the adjustment is done, the timer information is sent to the
indoor unit.
Note:
• Long press the timer adjustment buttons to adjust the time in units of
0.5 hours. If the adjustment exceeds 10 hours, the changes will be in
units of 1 hour, and the maximum time setting is 24 hours.
• Adjust the Timer On or Timer Off to 0.0h to cancel the Timer On or
Timer Off settings.
• When the Timer settings have been completed, there may be a ±15
minutes time difference when the buttons for adjustment, mode, fan
speed and ECO are pressed again.
• The Timer On and Timer Off settings can be set at the same time.

17
Operating the Remote Controller

5.10 Setting Operations

SET
Press to configure the remote controller parameters (see Figure
3.16) (for details, refer to the parameter configuration methods in Field
Settings).

Figure 3.16

5.11 Lock Buttons Operations

Once the buttons on the remote controller are locked, all the other
button operations are invalid except for Lock, Cooling Only/Cooling
and Heating Selection and Group Address Setting.
LOCK
1) Press to lock the buttons (see Figure 3.17) and the display
will show the lock icon “ ”.

Figure 3.17
LOCK
2) Press again, and the lock icon “ ” will disappear. Buttons
are unlocked.

18
Operating the Remote Controller
5.12 Cooling Only/Cooling and Heating Selection
Operations
C/H
1) In Cooling Only mode, press to turn on the Cooling and Heating
function. see Figure 3.18

Figure 3.18

C/H
2) In Cooling and Heating mode, press to turn on the Cooling Only
function.
Note:
• Factory default setting is Cooling and Heating mode.

5.13 Auxiliary Heater Operations (reserved)

1) In Heating Mode, Press the button (see Figure 3.19), and the screen
will display the icon “ ”,the signal is sent to the indoor unit ;
2) Press again , and the screen will display the lock icon “ ” ,the
signal is sent to the indoor unit .
3)Press the third time, and the screen will display the icon “ ”

Figure 3.19

19
Field Settings

1. Indoor Unit Address Query and Setting

LOCK
Long press for 5 seconds (see Figure 4.1) to enter the address
settings page of the indoor unit. Long press the same button again for
5 seconds to exit the page.

Figure 4.1
1) Indoor Unit Address Query:
Once in the address setting page, press to enter the Send page. In
Send page, press to send the query command (see Figure 4.2),
and the indoor unit display will show the IDU's current address.

Figure 4.2

20
Field Settings
2) Indoor Unit Address Setting:
Once in the address setting page, press to enter the Send page.
In Send page, press and to adjust the address up and
down respectively. Press to send the address to the indoor unit.
(See Figure 4.3)

Figure 4.3

21
Field Settings

2. Parameter Configuration for Remote Controller

2.1 Initial Paramete Configuration for Remote Controller
1) Configuration Method:
① Long press and at the same time for 8 seconds to enter the
parameter settings page (see Figure 4.4).

Figure 4.4

② Press and to adjust the parameter value;

③ Once the adjustment is done, press or wait for 5 seconds to
save the parameter settings. The operation sequence for the buttons is
as shown in Figure 4.5.

22
Field Settings

Figure 4.5

2) See Table 4.1 for details.

Table 4.1 Parameters of remote controller

Parameter Parameter Definition

7 fan speeds, temperature adjustment step

00
of 0.5°C
3 fan speeds, temperature adjustment step
01
of 1°C
7 fan speeds, temperature adjustment step
02
of 1°C (default parameter)
3 fan speeds, temperature adjustment step
03
of 0.5°C
7 fan speeds, temperature adjustment step
04 of 0.5°C, Auto Mode
3 fan speeds, temperature adjustment step
05 of 1°C, Auto Mode
7 fan speeds, temperature adjustment step
06 of 1°C, Auto Mode
3 fan speeds, temperature adjustment step
07 of 0.5°C, Auto Mode

Note:
• For the first generation indoor units, please set the parameter to 01.
23
Field Settings

2.2. Advanced Parameter Configuration for Remote Controller

1) Configuration Method:
Parameters can be set in the state of power on or off.
① Long press and at the same time for 8 seconds to enter
the advanced parameter settings page,"C1" will be displayed in the
temperature display area (see Figure 4.6)Press to exit the
advanced parameter settings status.
.

Figure 4.6
② Press ▲ and ▼ to adjust the parameter code;
③ Press to enter the parameter setting interface,then press the
"▲" and "▼" keys to adjust the parameter value,refer to the advanced
parameter setting list to select the setting parameters.(see Figure 4.7);

Figure 4.7

24
Field Settings

Parameter query: press the to send the query code, and the
indoor unit display board displays the parameter code;
Parameter setting: press the key to send the setting code;
Press the to return to the previous layer until you exit the
parameter setting;
If you enter the parameter code setting interface for the first time,
you will exit the parameter setting automatically without operation after
60 seconds. If there is any operation in the parameter setting interface,
the controller will save the parameter and return to homepage after 60
seconds.

2) See Table 4.2 for details.

Table 4.2 Advanced Parameters Setting .

Note:
①FF: FF means that this setting has a corresponding dial switch on
the IDU PCB and the position of the switch determines the value of this
parameter.
②Default Value: It means this parameter does not have a dial switch
on the main PCB and in case of no setting, the default value shall
prevail;
③ “The indoor unit fan stop time in heating mode” and the “Opening
Degree of EXV” are two mutually exclusive settings. The setting which
is done in the last would be effective. When set the heating EXV
standby position later , the indoor unit fan switching time will change
to default value automatically. When you set the fan stop time later ,
the default EXV opening will change to 72 p automatically
AHU includes two options: return air and fresh air control. If AHU is
written only, it indicates that both of these controls are applicable
simultaneously.

25
 Table 4.2 Advanced Parameters Setting .
Parameters Parameter Range of The 2nd Fresh Air The 2nd AC indoor AHU-return air AHU-supply air
Parameters The 2nd DC indoor Unit
Code Value Value Processing Unit Unit Conrtol Conrtol

C1 Indoor unit ESP setting 00-19/FF 00 Refer the static pressure settings in IDU IOM /
Indoor unit stop fan motor
4min/8min/12min/16min/ 4min/8min/12min/16
C2 time reaching heating 00/01/02/ 00 / fixed 10min /
0min /4min min/0min /4min
temperature 03/04/FF
Indoor unit cold air
15℃/20℃/24℃/26℃/15 14℃/12℃/16℃
C3 prevention temperature 00/01/02 00 14℃/12℃/16℃/18℃/14℃ 15℃/20℃/24℃/26℃/15℃
℃ /18℃/14℃
setting /03/FF

Indoor unit heating

C4 00/01/02/ 00 6℃/2℃/6℃/4℃/0℃/6℃ / 6℃/2℃/6℃/4℃/0℃/6℃ /
temperature compensation
03/04/FF

Indoor unit cooling

C5 00/01/FF 00 0℃/ 2℃/0℃ / 0℃/ 2℃/0℃ /
temperature compensation

Indoor unit Auto restart

C6 00/01/FF 00 Enable/ Disable/Depend on the J1 junper on pcb of IDU
function
Opening selection of
electronic expansion
C7 00/01/ 01 56P/72P/0P/72P 72P/72P/72P/72P
valve for heating and
02/FF
standby mode
Opening conditions of
C8 electric auxiliary heating 40-90 80 -5 ~ 20℃，15℃ by default in IU software
outdoor temperature
mode switching time
interval in automatic 00/01/
C9 00 15min/30min/60min/90min ,15min by default in IU software
mode 02/03

26
 Field Settings
3. Indoor Unit Capacity Code Query
Long press and for 8 seconds at the same time (see
Figure 4.8) to enter the capacity code query page of the indoor unit.
Long press the same button again for 8 seconds to exit the page.

Figure 4.8

Once in the capacity code query page, press to send the query
command (see Figure 4.9), and the indoor unit display will show the
IDU current capacity code.

Figure 4.9

27
Field Settings
4.Indoor Units Parameter Check Function
In the state of power on or off, long press the and together
for 8 seconds to enter the advanced parameter setting page, then press
the to send the command,and the indoor unit display will show the
IDU current parameters corresponding to particular IDU model, for more
information refer to IDU installation and operation instruction.

28
MD18U—001CW

16117000001594
1.AB18.5.7
1.BC

20.9.17

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