McQuay MWMX 010FR User manual

©2004 McQuay International [phone] www.mcquay.com
ISO 9002
REGISTERED
MWMX - 2005
DC Inverter Wall Mounted
Models: MWMX 010FR
 MWMX 015FR

Note : Installation and maintenance are to be performed only by qualified personnel who are
familiar with local codes and regulations, and experienced with this type of equipment.
Caution: Sharp edges and coil surfaces are a potential injury hazard. Avoid contact with them.
Warning : Moving machinery and electrical power hazard. May cause severe personal
injury or death. Disconnect and lock off power before servicing equipment.
This book supersedes MWMX-2004
"McQuay" is a registered trademark of McQuay International. All rights reserved throughout the world.
c 2005 McQuay International
"Bulletin illustrations cover the general appearance of McQuay International products at the time of publication
and we reserve the right to make changes in design and construction at any time without notice."
Contents
Features ........................................................................................................................1
Nomenclature ............................................................................................................... 2
Specifications ............................................................................................................... 3
Operating Range .......................................................................................................... 4
Noise Level ................................................................................................................... 5
Outlines And Dimensions ............................................................................................ 7
Refrigeration Cycle Diagram ....................................................................................... 8
Wiring Diagrams ........................................................................................................... 9
Remote Control Operation Guide .............................................................................. 10
Safety Precautions Before Installation ...................................................................... 14
Special Precautions For R410A ................................................................................. 16
Installation ................................................................................................................... 18
Servicing And Maintenance........................................................................................ 26
Troubleshooting .......................................................................................................... 28
Parts List ......................................................................................................................30

•Energy Saving
Total energy saved can be as high as 30% compared to the conventionally controlled units.
•Efficient
McQuay DC Inverter series achieve excellent efficient with high EER & COP rating.
•Comfortable
Users enjoy better comfort and quietness with inverter technology. When the environmental factors, such
as temperature, humidity, airflow and / or outside ambient conditions, are obtained and processed through
a control algorithm, the compressor motor speed can be varied to optimize the cooling power to create a
more precisely controlled room temperature (i.e. less temperature fluctuation).
•*R410A Refrigerant (New)
Introducing the new type of refrigerant - R410A which is environmental friendly with zero Ozone Depletion
Potential (ODP=0). R410A also provide the higher volumetric capacity and better refrigerating effect per
unit of volume.
•Advance Technology
The traditional conventional air conditioners repeat “the start” and “the stop” during the thermostat cycle off
and cause the unstable of room temperature. Incorporating fuzzy logic control into the McQuay Inverter
design enables greater flexibility in handling the system control.
This result in :
- Powerful, efficient and economical operation.
- Even room temperature control.
- Constant and quiet compressor operation.
- Enhanced system reliability and reduced maintenance costs.
• Self Diagnostic
Both indoor and outdoor LED Error Code Indicator helps to simplify the troubleshooting process. Where
there’s fault detected during operation, the defect code will indicate the faults.
•Wireless Remote Control
-The compact LCD transmitter is able to operate the air conditioner unit within the distance of 9 meters.
- Fan motor speed can be set at low / medium / high or automatic.
- Sleep mode automatically increase set temperature since room temperature is lower at night thus
achieving comfort surrounding.
- Airflow direction can be controlled automatically.
- Room temperature is controlled by electronic thermostat.
- The unit can be preset to on and off automatically for maximum of 15 hours by using timer on/off.
- Introducing turbo mode, which allows inverter compressor operates at high power and maximum speed
to achieve required temperature fast.
1
Features

2
MWM X010 F R
Model Name
WM : Wall Mounted
System
X : DC Inverter
Brand
M : McQuay
Capacity
010 : 10,000 Btu/h
Series
F : F series
Model Type
R : heatpump
Omitted if Cooling
Nomenclature

1) ALL SPECIFICATIONS ARE SUBJECTED TO CHANGE BY THE MANUFACTURER WITHOUT PRIOR NOTICE.
2) NOMINAL COOLING AND HEATING CAPACITY ARE BASED ON THE CONDITIONS BELOW :
a) COOLING - 27°C DB / 19°C WB INDOOR AND 35°C DB OUTDOOR
b) HEATING - 21.1°C DB / 15.6°C WB INDOOR AND 8.3°C DB / 6.1°C WB OUTDOOR
3
SpecifSpecif
SpecifSpecif
Specificaica
icaica
icationstions
tionstions
tions
MODEL INDOOR UNIT MWMX 010FR MWMX 015FR
OUTDOOR UNIT M5LCX 010CR M5LCX 015CR
W2,784 (1,084 - 3,516) 3,516 (1,084 - 3,780)
Btu/h 9,500 (3,700 - 12,000) 12,000 (3,700 - 15,000)
W3,370 (1,172 - 4,395) 4,102 (1,172 - 4,981)
Btu/h 11,500 (4,000 - 15,000) 14,000 (4,000 -17,000)
RATED TOTAL POWER CONSUMPTION (COOLING) W 730 (300 - 1,000) 1,095 (300 - 1,780)
RATED TOTAL POWER CONSUMPTION (HEATING) W 1,000 (290 - 1,680) 1,270 (290 - 1,950)
RATED TOTAL RUNNING CURRENT (COOLING) A 3.50 4.80
RATED TOTAL RUNNING CURRENT (HEATING) A 4.80 5.40
POWER SOURCE V/Ph/Hz
REFRIGERANT
HIGH L/s / cfm 142 / 300 146 / 310
MEDIUM L/s / cfm 109 / 230 127 / 270
LOW L/s / cfm 90 / 190 109 / 230
FAN MOTOR 4P 13W 4P 13W
INPUT POWER W 34 36
RUNNING CURRENT A 0.15 0.15
MATERIAL
DIAMETER mm/in
THICKNESS mm/in
MATERIAL
THICKNESS mm/in
ROW
FIN PER INCH
FACE AREA m2
/
ft2
HEIGHT mm/in
DIMENSION WIDTH mm/in
DEPTH mm/in
WEIGHT kg
SOUND PRESSURE LEVEL - H / M / L dBA 38 / 35 / 30 39 / 36 / 31
ROOM TEMPERATURE
AIR DISCHARGE
OPERATION
CONDENSATE DRAIN SIZE mm/in
AIR FILTER
PACKING HEIGHT mm/in
DIMENSION WIDTH mm/in
DEPTH mm/in
COMPRESSOR TYPE
RATED RUNNING CURRENT (COOLING) A 3.2 4.4
RATED RUNNING CURRENT (HEATING) A 4.6 5.0
INPUT POWER (COOLING) W 632 991
INPUT POWER (HEATING) W 912 1166
PROTECTION DEVICE
FAN TYPE / DRIVE
BLADE MATERIAL
DIAMETER mm/in
RATED RUNNING CURRENT A 0.24 0.29
MOTOR OUTPUT W 25 35
RATED INPUT POWER W 56 68
AIR FLOW L/s / cfm 378 / 800 425 / 900
MATERIAL
DIAMETER mm/in
THICKNESS mm/in
MATERIAL
THICKNESS mm/in
ROW
FIN PER INCH
FACE AREA m2
/
ft2
HEIGHT mm/in
DIMENSION WIDTH (WITH COVER) mm/in
DEPTH mm/in
WEIGHT kg
MATERIAL
CASING THICKNESS mm/in
FINISHING
SOUND PRESSURE LEVEL dBA 47 52
TYPE
LIQUID mm/in
GAS mm/in 9.52 / 0.375 12.7 / 0.500
PACKING HEIGHT mm/in
DIMENSION WIDTH mm/in
DEPTH mm/in
REFRIGERANT CHARGE kg 0.78 / 1.72 0.79 / 1.74
601 / 23.7
803 / 31.6
320 / 12.6
PIPE
FLARE
SIZE 6.35 / 0.250
38.0 / 83.8
GALVANISED MILD STEEL
0.8 / 0.031
EPOXY POLYESTER POWDER
0.35 / 3.78
540 / 21.3
700 (+70) / 27.6 (+2.8)
250 / 9.8
FIN
ALUMINIUM (HYDROPHILIC)
0.11 / 0.004
2
18
TUBE
SEAMLESS INNER GROOVED COPPER TUBE
7 / 0.276
0.32 / 0.013
269 / 10.6
OUTDOOR UNIT
COMP.
DC BRUSHLESS SCROLL
ELECTRONIC CONTROL
FAN
PROPELLER / DIRECT
GLASS REINFORCED ACRLY STYRENE RESIN
401 / 15.8
COIL
16 / 0.63
ANTI-FUNGUS POLYPROPYLENE FILTER
371 / 14.6
875 / 34.4
9.5 / 20.90
CONTROL
FUZZY LOGIC CONTROL
LOUVER (UP & DOWN) & GRILLE (LEFT & RIGHT)
LCD WIRELESS REMOTE CONTROL
0.198 / 2.131
290 / 11.4
815 / 32.1
181 / 7.1
INNER GROOVED COPPER TUBE
7.0 / 0.276
0.32 / 0.013
FIN
ALUMINIUM (HYDROPHILIC)
0.11 / 0.004
2
18
INDOOR UNIT
FAN
AIR FLOW
COIL
TUBE
NOMINAL COOLING CAPACITY
NOMINAL HEATING CAPACITY
220 - 240 / 1 / 50
R410A

Ensure the operating temperature is in allowable range.
Cooling only
Heatpump
4
Caution :
The use of your air conditioner
outside the range of working
temperature and humidity can
result in serious failure.
Coolin
g
Outdoor temp. (°CDB)
Indoor temp. (°CWB)
0
19
35
15
46
24
STD
Coolin
g
Outdoor temp. (°CDB)
Indoor temp. (°CWB)
0
19
35
15
46
24
STD
Outdoor temp. (°CWB)
Indoor temp. (°CDB)
Heatin
g
-9
15 21
6
27
18
STD
Operating Range

Speed Overall Noise
(RPM) 125 Hz 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz A (dBA) Criteria
H(1250)323335343123163833
M (1110) 32 29 32 31 27 18 14 35 30
L (980) 29 26 29 26 21 15 12 30 24
H(1300)323436363224163935
M (1150) 32 30 33 33 29 20 15 36 32
L (1000) 30 26 30 27 22 15 13 31 25
Model 1/1 Octave Sound Pressure Level (dB, ref 20µPa)
Sound Pressure Level (Measured In Anechoic Room)
DC Inverter Wall Mounted Unit
Microphone position: MWMX - F/FR - 1m in front of the unit and 0.8m below the vertical centre line of the
unit. (JIS C 9612)
Model Measuring location
MWMX 010FR
MWMX 015FR
Standard : JIS C 9612
MWMX 010FR
MWMX 015FR
5
Noise LeNoise Le
Noise LeNoise Le
Noise Levv
vv
velel
elel
el

Measured in anechoic room at 1m front and 0.8m below the vertical centre line of the unit
Measured in anechoic room at 1m front and 0.8m below the vertical centre line of the unit
MMWX 015FR NC CURVE
MMWX 010FR NC CURVE
6

7
Indoor Unit
Model : MWMX 010FR / 015FR
Outdoor Unit
Model : M5LCX 010CR / 015CR
Note : Dimension in mm
Note : Dimension in mm
Outlines And Dimensions

8
Model : MWMX 010FR / 015FR - M5LCX 010CR / 015CR
Refrigeration Cycle Diagram

9
Model : MWMX 010FR / 015FR
Model : M5LCX 010CR / 015CR
Wiring Diagrams

10
Remote Controller Operation Guide
G7 Remote Controller
Transmission source
•The source where the signal will
be transmitted
1
Temperature setting
•To set the desired room
temperature, press the button to
increase or decrease the set
temperature.
•The temperature setting range is
from 16°C to 30°C (Optional
setting 18°C to 30°C).
•Press both buttons
simultaneously to toggle the
temperature setting between °C
and °F.
4
Fan speed selection
•Press the button until the
desired fan speed is achieved.
6
ON timer setting
•Press the SET button will
activate the on timer function.
•Set the desired on time by
pressing the SET button
continuously. If the timer is set
to 7.30am, the air conditioner
will turn on at 7.30 sharp.
•Press the CLR button to cancel
the on timer setting.
7
Automatic air swing
•Press the SWING button to
activate the automatic air swing
function.
•To distribute the air to a specific
direction, press the SWING but-
ton and wait until the louver
move to the desired direction
and press the button once
again.
9
Turbo function (optional-only applicable to inverter unit)
•Press button for fast cooling or heating operation.
•The temperature will be increased internally if it is in the HEAT mode,
decreased if in COOL or DRY mode. Fan speed will be increased if it
is not at maximum speed.
•The temperature & fan speed will resume to user setting if the button
is pressed again or after 20mins.
•Available under HEAT, COOL & DRY modes only.
12
Signal transmission
indication
•Blink to confirm the last setting
has been send to the unit.
2
On/Off button
•Press once to start the air
conditioner.
•Press again to stop the unit.
3
Operation mode
•Press the MODE button to
select the type of operating
mode.
•For cooling only unit, the
available modes are : COOL,
DRY & FAN.
•For heat pump unit, the
available modes are : AUTO,
COOL, DRY, FAN & HEAT.
5
OFF timer setting
•Press the SET button will
activate the off timer function.
•Set the desired off time by
pressing the SET button
continuously.
•Press the CLR button to cancel
the off timer setting.
8
Sleep mode setting
•Press the button to activate
sleep mode. This function is
available under COOL, HEAT &
AUTO mode.
•When it is activated in COOL
mode, the set temperature will
be increased 0.5°C after 30mins,
1°C after 1 hour and 2°C after 2
hours.
•When it is activated in HEAT
mode, the set temperature will
be decreased 1°C after 30mins,
2°C after 1 hour and 3°C after 2
hours.
10
Clock time setting
•Press button + or - to increase
or decrease the clock time.
11
12

INDICATOR LIGHTS
IR signal receiver
When all infrared remote control operating signal
has been transmitted, the signal receiver on
indoor unit will make a (beep) sound to confirm
acceptance of the transmitted signal.
Inverted Cooling Unit
The table shows the LED indicator lights for the air
conditioner unit under normal operation and fault
conditions. The LED indicator lights are located at
the bottom right side of the air conditioner unit.
Timer
Sleep mode
Power ON
Dry mode
- ON / - ON or OFF - Blinking
LED Indicator Lights : Normal Operation And Fault Indication Table
Operation / Fault Indicator Action
Timer on
Sleep mode on
Dry mode
Compressor overload protection
Indoor temperature sensors contact loose /
short
-
-
-
Call your dealer






Outdoor temperature sensors contact
loose / short
Gas leak / compressor overheat
Communication error between indoor and
outdoor
Inverter error / PFC error
Outdoor total current trip / DC peak
Indoor fan feedback error
Call your dealer
Call your dealer
Call your dealer
Call your dealer
Call your dealer
Call your dealer
Call your dealer
11

12
Inverter Heatpump Unit LED Indicator Lights For Inverter Heatpump Unit
Cool / Dry Stand-by / Fan
Timer
Heat
LED Display
The LED in indoor and outdoor unit indicate operation modes / faults detected
Cooling mode
Normal Operation / Fault Condition Action
Cool / Dry Heat Stand by Timer
- ON / - ON or OFF - Blinking
/
/
/
/





-
Dry mode
Stand-by / Fan mode
Heat mode
Auto mode
Defrost operation
Compressor overload protection Call your dealer
-
-
-
-
-
Call your dealer
Call your dealer
Call your dealer
Call your dealer
Call your dealer
Call your dealer
Call your dealer
Indoor temperature sensors contact loose /
short
Outdoor temperature sensors contact loose /
short
Gas leak / compressor overheat
Communication error between indoor and
outdoor
Inverter error / PFC errore
Outdoor total current trip / DC peak
Indoor fan feedback error


13
Blink Fault Indication Corrective Action
1 Outdoor ambient sensor error Check ambient sensor wire and connection
2 Outdoor coil sensor error Check coil sensor wire and connection
3Discharge sensor error / Compressor overheat
indication
Check discharge sensor wire and connection /
Not enough refrigerant / Indoor overload
4 DC compressor feedback Call local dealer
5 Communication error Check interconnection communication wire
6 Over current Call local delaer
7 No load Check compressor wire and connection
8 Over / under voltage Check power supply
9 DC compressor start failure Call local dealer
10 Cooling overload Check whether outdoor unit is blocked or not
11 Defrost Wait till defrost is over then restart
12 IPM Protection Check IPM
13 EEPROM read error Change EEPROM
14 EEPROM write error Change EEPROM
15 DC fan motor no feedback Check fan motor wire connection
Blinks Blinking indication
1 Normal running, with no limitation
2 Voltage limit
3 Heating unit : Indoor cooil temperature limit
4 Total current limit
5 Discharge temperature limit
6 Cooling unit : Indoor coil temperature limit
7 Indoor fan control
8 Outdoor frequency adjustment
Compressor Stopped Special Instruction
Normal Running Mode Condition
If the air conditioner unit has no faulty indication and the compressor is running at normal mode, the
outdoor P.C. board’s LED indication will blink at a slower paste. The table below shows the significant
meaning of different running mode and limitation for this air conditioner unit.
One must not attemp to see the LED indication blinking unless intructed to do so.
Keep the main power supply ON
Open up the outdoor unit’s top panel
Count the number of blinks indicated
by the LED
Notice the Green LED on the outdoor P.C. board
DO NOT TOUCH ANY OF THE WIRES
INSIDE THE UNIT!
*If the problem persist, contact your local delaer straight away.

Before Operating, Please Read The Following “Safety Precautions” Carefully.
To prevent injury to the user or other people and properties damage, the following instructions must be followed.
•Incorrect operation due to ignoring of instruction will cause harm or damage, the seriousness is classified
by the following indications.
Warning: This sign indicates the possibility of causing death or serious injury.
Caution: This sign indicates the possibility of causing injury or damage to properties only.
Warning
•This unit must be installed by a qualified technician.
•All field wiring must accordance to the National Wiring Regulation.
Important
The wires in this mains lead are coloured in accordance with the following code:
Green and yellow Earth
Blue Neutral
Brown Live
As the colours of the wires in the mains lead of this appliance may not correspond with the coloured
markings identifying the terminals in your plug, proceed as follows:
• The wire which is coloured green and yellow must be connected to the terminal in
the plug which is marked with the earth symbol or coloured green or green and yellow.
• The wire which is coloured blue must be connected to the terminal which is
marked with the letter N or coloured black.
• The wire which is coloured brown must be connected to the terminal which is
marked with letter L or coloured red.
Note
If the supply cord is damaged, it must be replaced by the special cord obtainable at authorized service/
parts centers.
This unit is not provided with a plug, therefore the power supply wire must be connected by a qualified
chargeman.
Caution
Remove power plug or disconnect from the mains before servicing the appliance.
14
Safety Precautions Before Installation

15
Caution
Please confirm the following important points when installation
• Grounding is necessary
It may cause electrical shock if grounding is not perfect.
• Do not install the unit where leakage of flammable gas may occur
In case of gas leaks and accumulates at the surrounding of the unit, it may cause fire
ignition.
•Confirm drainage piping is connected properly
If it is not connected perfectly, it may cause water leakage and dampen the
furniture.
• Confirm the unit is switched off before install, service or maintain the unit
If it is not switched off, it may cause injury to the installer by any of the moving part
especially fan.
• Do not overcharge the unit
This unit is factory pre charged. Over charge will cause over current or damage to
the compressor.
Refer to page 25 in case of top up charge is necessary.
• Confirm cover back the unit panel after servicing or installation
Unsecure panel will cause unit noisy.
Symbol (with white background) denotes item that is PROHIBITED from doing.
Symbol (with black background) denotes item that is COMPULSORY to be carried out.

16
SPECIAL PRECAUTIONS WHEN DEALING WITH REFRIGERANT R410A UNIT
1) WHAT IS NEW REFRIGERANT R410A?
R410A is a new HFC refrigerant which does not damage the ozone layer. The working pressure of this new refrigerant
is 1.6 times higher than conventional refrigerant (R22), thus proper installation / servicing is essential.
2) COMPONENTS
Mixture weight composition R32(50%) and R125(50%)
3) CHARACTERISTIC
•R410A liquid and vapor components have different compositions when the fluid evaporates or condenses. Hence,
when leak occurs and only vapor leaks out, the composition of the refrigerant mixture left in the system will change
and subsequently affect the system performance. DO NOT add new refrigerant to leaked system. It is recommended
that the system should be evacuated thoroughly before recharging with R410A.
•When refrigerant R410A is used, the composition will differ depending on whether it is in gaseous or liquid phase.
Hence when charging R410A, ensure that only liquid is being withdrawn from the cylinder or can. This is to make
certain that only original composition of R410A is being charged into the system.
•POE oil is used as lubricant for R410A compressor, which is different from the mineral oil used for R22 compressor.
Extra precaution must be taken not to expose the R410A system too long to moist air.
4) CHECK LIST BEFORE INSTALLATION/SERVICING
•Tubing
Refrigerant R410A is more easily affected by dust of moisture compared with R22, make sure to temporarily cover
the ends of the tubing prior to installation
•Compressor oil
No additional charge of compressor oil is permitted.
•Refrigerant
No other refrigerant other that R410A
•Tools (size of service port is different from R22 system)
Tools specifically for R410A only (must not be used for R22 or other refrigerant)
i) Manifold gauge and charging hose
ii) Gas leak detector
iii) Refrigerant cylinder/charging cylinder
iv) Vacuum pump c/w adapter
v) Flare tools
vi) Refrigerant recovery machine
5) HANDLING AND INSTALLATION GUIDELINES
Like R22 system, the handling and installation of R410A system are closely similar. All precautionary measures; such as
ensuring no moisture, no dirt or chips in the system, clean brazing using nitrogen, and thorough leak check and vacuuming
are equally important requirements. However, due to its hydroscopic POE oil, additional precautions must be taken to
ensure optimum and trouble free system operation.
a) During installation or servicing, avoid prolong exposure of the internal part of the refrigerant system to moist air.
Residual POE oil in the piping and components can absorb moisture from the air.
b) Ensure that the compressor is not expose to open air for more than the recommended time specified by its manufacturer
(typically less than 10 minutes). Removed the seal plugs only when the compressor is about to be brazed.
c) The system should be thoroughly vacuumed to 1.0 Pa ( 700mmHg) or lower. This vacuuming level is more stringent
than R22 system so as to ensure no incompressible gas and moisture in the system.
Special Precautions For R410A

d) When charging R410A, ensure that only liquid is being withdrawn from the cylinder or can. This is to
ensure that only the original composition of R410A is being delivered into the system. The liquid
composition can be different from the vapor composition.
17
Dip-pipe
Liquid
withdrawal
Invert cylinder
without dip-pipe
f) Normally, the R410A cylinder or can is being equipped with a dip pipe for liquid withdrawal. However, if
the dip pipe is not available, invert the cylinder or can so as to withdraw liquid from the valve at the
bottom.

18
Installation Diagram
Indoor Unit
Outdoor Unit
CAUTION : Before installing the unit, ensure that the power supply matches the power requirement of the air
conditioner
Installation