Midea MWHUK-05CMN8-BCK0 User manual

Windows AC
OPP MSII COMP
Service Manual
North America Air Conditioner

Contents
1. Model.....................................................................................................................................................................1
2.Dimension...............................................................................................................................................................1
3. Operation Modes and Instructions........................................................................................................................2
3.1 Display control.....................................................................................................................................................2
3.2 Remote control....................................................................................................................................................3
4 Wiring Diagram.......................................................................................................................................................4
5 Electronic function(For remote control models).....................................................................................................7
5.1 Terms and definitions ..........................................................................................................................................7
5.2 Protection function...............................................................................................................................................7
5.3 Auto mode ...........................................................................................................................................................7
5.4 Fan-only mode ....................................................................................................................................................7
5.5 Cooling mode......................................................................................................................................................7
5.6 Dry mode.............................................................................................................................................................8
5.7 Sleep mode.........................................................................................................................................................8
6 Installation and use notice......................................................................................................................................8
6.1 The inside should be higher than outside, to make sure that the water from evaporator will be easy to flow to
the outside. and the water will be helpful to get more capacity and more EER. ......................................................8
6.2 Cleaning filter ......................................................................................................................................................8
6.3 Cabinet Cleaning.................................................................................................................................................9
6.4 Winter Storage.....................................................................................................................................................9
7 Troubleshooting....................................................................................................................................................10
7.1 Troubleshooting.................................................................................................................................................10
7.2 Sensor malfunction............................................................................................................................................ 11
7.3 Characteristic of temperature sensor................................................................................................................ 11

1
1. Model
OPP
MWHUK-05CMN8-BCK0
MWHUK-06CMN8-BCK0
MWHUK-05CRN8-BCK0
MWHUK-06CRN8-BCK0
MWHUK-05CRN8-BCL1
MSII
MWHUK-06CRN8-BCL1
MWHUK-08CRN8-BCJ9
MWHUK-08CRN8-BCL0
MWIUKB11-08CRN8-BCK4N
COMP
MWAUK-10CRN8-BCJ9
MWAUK-10CRN8-BCL0
MWAUK-12CRN8-BCJ9
MWAUK-12CRN8-BCL0
MWAUK-14.5CRN8-BCK3N
MWAUKB11-10CRN8-BCK4N
MWAUKB11-12CRN8-BCK4N
2.Dimension
Dimension Mode
W (mm, inch)
H (mm, inch)
D (mm, inch)
OPP
406
16.0
306
12.0
335
13.2
MSII
471
18.5
340
13.4
400
15.7
MSII(B11)
470
18.5
340
13.4
410
16.1
COMPII
482
19.0
372
14.6
545
21.5
COMPIII(B11)
480
18.9
403
15.9
565
22.2

2
❽
❶
❷
❸
❹
❺
❻
❼
3. Operation Modes and Instructions
3.1 Display control
❶On-Off Button
Press to turn on or
off the unit.
NOTE: The unit will initiate
automatically the Energy
Saver function under cool,
Dry, Auto (only
Auto-Cooling and
Auto-Fan) modes.
❷Up and Down Button
Press or hold either
Up or Down the
setting temperature 1℃/ 2
℉each times from 62℉(17℃) to 88℉(30℃). Also
can be used for time adjust in Timer function.
Some models press and hold both Up and Down
buttons for 3 seconds, will change the display from ℉
to ℃.
❸Mode select Button
Press to change the operation mode, each time
you press the button, a mode is selected in a
sequence that goes from Auto, Cool, Dry and Fan.
The unit will initiate automatically the Energy Saver
function under Cool, Dry, Auto (only Auto-Cooling and
Auto Fan) modes.
Base on Energy Stars’ requirement.
❹Fan speed Button
Press to change the fan speed, each time you
press the button, the fan speed in four steps, Auto,
Low, Med and High.
On Dry mode, the fan speed is controlled at Low
automatically.
❺Timer Button
Press to start or stop the Auto On or Auto Off
function. Press or hold either Up or Down
the setting time from 0.0 to 24 hours.
❻Sleep Button
Press to start or stop the sleep function.
❼Energy Saver Button
Press to start or stop the energy saver function.
This function is available on Cool, Dry, Auto (only
Auto-Cooling and Auto-Fan) modes.
When the room temperature is meet the compressor
shut off condition, the fan motor will continue running
for 3 minutes, after that, the fan motor will running for
2 minutes every 10 minutes, until the compressor
start.
❽Check Filter Button
This function is a reminder to clean the Air Filter for
more efficient and more healthy. The LED light will
keep illuminate after 250 hours of operation, until
Press .

3
Mechanical:
①On-Off and Mode select switch
Use this switch to turn on or off the unit, and select the
operation mode for Low Cooling, High Cooling, Low
Fan, High Fan.
②Temperature switch
Use this switch to setting the temperature for cooling
mode.
●On-Off switch
Use this switch to turn on or off the
unit, the unit will only running at
cooling mode..
Note: To protect the compressor,
every time when the customer turn
on the unit, we suggest to wait for
three minutes.
3.2 Remote control
RG15A(B)/E
RG15B1/E
②
①
①
②

4
4 Wiring Diagram
MWHUK-05CMN8-BCK0, MWHUK-06CMN8-BCK0

5
MWHUK-05CRN8-BCK0, MWHUK-05CRN8-BCL1, MWHUK-06CRN8-BCK0, MWHUK-06CRN8-BCL1
MWHUK-08CRN8-BCJ9, MWIUKB11-08CRN8-BCK4N, MWHUK-08CRN8-BCL0

6
MWAUK-10CRN8-BCJ9, MWAUKB11-10CRN8-BCK4N, MWAUK-10CRN8-BCL0, MWAUK-12CRN8-BCJ9,
MWAUKB11-12CRN8-BCK4N, MWAUK-12CRN8-BCL0, MWAUK-14.5CRN8-BCK3N,
MWHUK-06CRN8-BCK0(22020310004197)

7
5 Electronic function(For remote
control models)
5.1 Terms and definitions
TA: Temperature of indoor ambient (T1)
TE: Temperature of evaporator (T2).
TC: Temperature of condenser (T3).
TO: Temperature of outdoor ambient (T4)
TS: The set temperature.
DAHT: Sensor of heater(T5)
5.2 Protection function
1. The compressor restart protection functions with a
delay of 3 minutes.
2. Sensor redundancy and automatic shutoff.
5.3 Auto mode
In Auto mode, the unit will choose cooling or
fan-only mode according to ΔT(ΔT =TA-Ts)
ΔT=TA-Ts
Running mode
ΔT＞4F
Cooling
-2F≤ΔT≤4F
Fan-only
5.4 Fan-only mode
1. The temperature can’t be controlled at the mode,
and the room ambient temperature is display on LED.
The temperature only display 32 to 99 ℉(0 to 37℃), lf
out of range will display LO or HI.
2. The Ion/ Timer functions are valid at the fan-only
mode.
3. Auto fan: In fan-only mode, AC operates the same
as auto fan in cooling mode with the temperature set
at 24°C(75°F).
5.5 Cooling mode
1. The temperature can be set from 62 to 86℉(17 to
30℃)
2. Compressor Control
The compressor operates as below:
(TA-Ts)℉
+2
0
Operation conditon
compressor off with a delay of 1 minute
compressor on
When TA≤TS, compressor off
When T1>TS+2℉, compressor on
3. Fan Control
In cooling mode, the indoor fan operates continuously.
The fan speed can be set to high, medium or low.
•The auto fan acts as below rules:
TA-TS( F)
High
Medium
Low
2.5
-1
0
o
4.Auto-defrosting function protection as below:
When TE is lower, it means that the evaporator frosts.
Then the unit starts defrosting, and the indoor fan
keeps working at the moment. When the temperature
is up, the unit stops defrosting.
TE ℉
55
30
compressor off
when TE is lower than 30℉
lasting for 5 seconds
compressor on

8
5.6 Dry mode
1. The temperature can be setting the same as
cooling mode.
2. The fan speed will keep running at low speed and
can’t be controlled at the mode.
5.7 Sleep mode
1. The sleep function is available in cooling, heating,
or auto mode.
2. In this mode the fan speed will be change to auto
fan.
3. In this mode the selected temperature will increase
(cooling) or decrease (heating) by 2°F/1 (or 2)°C 30
minutes after the mode is selected. The temperature
will then increase (cooling) or decrease (heating) by
another 2°F/1 (or 2)°C after an additional 30 minutes.
This new temperature will be maintained for 7 hours
before it returns to the originally selected temperature.
This ends the Sleep mode and the unit will continue to
operate as originally programmed.
4. When the function is start, if you do any operation
below, the function will stop.
•Press sleep button again, or use the remote
control to set anything.
•Turn off the unit.
•It is time to turn off the unit, for timer off
function.
6 Installation and use notice
6.1 The inside should be higher than outside, to
make sure that the water from evaporator will
be easy to flow to the outside. and the water
will be helpful to get more capacity and more
EER.
NOTE: Check that air conditioner is tilted back about
H(tiled about 3°to 4°downward to the outside). After
proper installation, condensate should not drain from
the overflow drain hole during normal use, correct the
slope otherwise.
6.2 Cleaning filter
The air filter should be checked at least once a month
to see if cleaning is necessary. Trapped particles in
the filter can build up and cause an accumulation of
frost on the cooling coils.
•Push the vent handle to the Vent Closed position
(where applicable). Open the front panel.
•Take the filter by the center and pull up and out.
•Wash the filter using liquid dishwashing detergent
and warm water. Rinse filter thoroughly. Gently shake
excess water from the filter. Be sure the filter is
thoroughly dry before replacing. Instead of washing,
you may vacuum the filter clean.