McQuay MWM User manual

SERVICE
GUIDE BOOK

MCQUAY Service Guide Book Table of Contents
1
Table of Contents
1.0 MODEL NAME
1.1 Product Name Description ............................... 2
2.0 CONVERSION TABLE
2.1 Conversion Table ............................... 3
3.0 PRODUCT MAINBOARD VS HANDSET MATRIX
3.1 Product Mainboard vs. Handset Matrix ............................... 4
4.0 HANDSET OPERATING GUIDE
4.1 G6 ............................... 6
4.2 G7 ............................... 7
4.3 G11 ............................... 8
4.4 G17 ............................... 9
4.5 GS01 ............................... 10
4.6 APJ1 ............................... 12
4.7 SLM3 ............................... 14
4.8 SLM8 ............................... 15
4.9 Sequential LCD ............................... 17
4.10 Netware 3/3C ............................... 18
4.11 Rooftop Panel ............................... 19
4.12 Chiller Panel ............................... 20
4.13 MC301 ............................... 21
4.14 MC303 ............................... 24
5.0 CONTROLLER SETTING
5.1 Auto Random Restart ............................... 26
5.2 Hot Keep Selection ............................... 26
5.3 Sequential Board (SQ2.0) ............................... 28
5.4 Chilled Water Fan Coil Unit – W1V3 ............................... 30
5.5 Chilled Water Fan Coil Unit – W2.0
5.6 Hardware Setting – SLM8
...............................
...............................
31
32
6.0 CONVERSION CONFIGURATION
6.1 Auxiliary Heater Conversion 33
6.2 Multi Split Conversion ............................... 36
6.3 U1.5 ÆL208A Conversion ............................... 37
6.4 WMF U1.4 to L2EF Conversion ............................... 38
6.5 SQ Board for Wiring up to 1000m Conversion ............................... 39
6.6 Room Sensor On Netware 3 ............................... 41
7.0 SERVICE DIAGNOSIS
7.1 LED Lights Diagnosis Table ............................... 42
7.2 Error Codes Diagnosis By Handset ............................... 62
7.3 MDS Diagnosis ............................... 72
7.4 General Check ............................... 75
7.5 General Troubleshooting Guide ............................... 76
APPENDIX
A. Resistance – Temperature Characteristic ............................... 77
B. MDS Compatibility ............................... 80
C. MDS Outdoor Capacity Dip Switch Setting ............................... 81
D. Cable Length Of Wired Handset ............................... 82
“Mcquay” is a registered trademark of Mcquay International. All rights reserved.
© 2012 Mcquay International. All rights reserved throughout the world.
Bulletin illustrations cover the general appearance of Mcquay International products at the time of publication.
We reserve the right to change design and construction specification at any time without notice

MCQUAY Service Guide Book Model Name
2
1.0 MODEL NAME
1.1 Product Name Description
No. Description Generic Model Name MCQUAY Brand
1 Wall Mounted Fan Coil Unit WM / 5WM MWM / M5WM
2 Wall Mounted AC Inverter Fan Coil Unit WMV MWMV
3 Wall Mounted DC Inverter Fan Coil Unit 5WMX M5WMX
4 Wall Mounted DC Inverter-Y Fan Coil Unit 5WMY M5WMY
5 Ceiling Exposed Fan Coil Unit CE / 5CE MCM / M5CM
6 Ceiling Exposed Inverter-Y Fan Coil Unit 5CEY M5CMY
7 Ceiling Cassette Fan Coil Unit CK / 5CK MCK / M5CK
8 Ceiling Cassette Inverter-Y Fan Coil Unit 5CKY M5CKY
9 Ceiling Concealed Fan Coil Unit CC / 5CC MCC / M5CC
10 Ceiling Concealed Inverter-Y Fan Coil Unit 5CCY M5CCY
11 Ducted Split Blower Unit SB MDB
12 Chilled Water Fan Coil Unit CW MCW
13 Water Source Heatpump Split Unit WSS / 5WSS MWSS / M5WSS
14 Horizontal Water Source Heatpump Unit WH MWH
15 Air Cooled Mini Chiller AC / 4AC / 5AC MAC / M4MAC /
M5MAC
16 Single Split Condensing Unit SL / 4SL / 5SL MLC / M4LC / M5LC
17 Single Split AC Inverter Condensing Unit SLV MLCV
18 Single Split DC Inverter Condensing Unit 5SLX M5LCX
19 Single Split DC Inverter Condensing Unit 5SLY M5LCY
20 Modular Split Condensing Unit MSS / 4MSS MMC / M4MC
21 Multi Split Series MSD / 4MSD MMSD / M4MSD
MST / 4MST MMST / M4MST
MSH MMSH
22 Multi Split AC Inverter Condensing Unit MSV MMSV
23 Multi Split DC Inverter Condensing Unit 5MSX M5MSX
24 Multi Split DC Inverter Condensing Unit 5MSY M5MSY
25 Multi Digital Scroll Units MDS/ 5MDS MDS/ 5MDS
26 Horizontal Condensing Unit HDC / 5HDC AHDC / A5HDC
27 Vertical Condensing Unit VCU MVCU
28 Air Cooled Roof Top Packaged Air
Conditioner
RT / 4RT / 5RT MRT / M4RT / M5RT
29 Air Cooled Inverter Mini Chiller 5ACV M5ACV

MCQUAY Service Guide Book Conversion Table
3
2.0 CONVERSION TABLE
2.1 Conversion Table
Capacity
Btu/hr MBH kCal/Hr kW
1 0.001 0.252 0.293 x 10-
3
1000 1 252 0.293
3.968 0.004 1 1.162 x 10-
3
3412 3.412 860.04 1
Pressure
PSI kg/cm2W.G. Pascal
(in.) (ft.) (Pa)
1 0.07 27.7 2.309 0.69 x 10
4
14.22 1 394.08 32.84 9.81 x 10
4
3.61 x 10-
2
2.538 x 10-
3
1 0.083 248.84
1.45 x 10-
4
0.1 x 10-
4
0.004 3.349 x 10-
4
1
Flow Rate
L/s m
3
/hr m
3
/s U.S. GPM CFM
1 3.6 0.001 15.85 2.119
0.278 1 0.278 x 10-
3
4.403 0.588
1000 3600 1 15850 2119
0.063 0.227 0.063 x 10-
3
1 0.1337
0.472 1.7 0.472 x 10-
3
7.481 1
Temperature Velocity
fps m/s fpm
1 0.305 60
3.281 1 196.9
0.017 0.005 1
Volume
L m
3
U.S. G.P.M. ft
3
1 0.001 0.264 0.0353
1000 1 264 35.3
3.785 3.785 x 10-
3
1 0.134
28.315 0.028 7.48 1
Area
in
2
ft
2
m
2
cm
2
1 6.94 x 10-
3
6.452 x 10-
4
6.452
144 1 0.093 929.03
1550.06 10.764 1 1 x 10
4
0.155 1.076 x 10-
3
1 x 10-
4
1
°F = (1.8 x °C) + 32
8.1 32−°
=° F C

MCQUAY Service Guide Book Product Mainboard vs. Handset Matrix
4
3.0 PRODUCT MAINBOARD VS. HANDSET MATRIX
3.1 Product Mainboard vs. Handset Matrix
Type No. Main Board
Model L2.0 L2
GSN
L2
08A
R_1_
01A
W_2_
03A
C_2_
01A
2P2065
69-4
U1
SB125
SQ
2.0 VA2.0 VA3.0 Handset
Standard Optional
DX
1 WM - F Series 9G17 SLM3+AC5300/Netware 3/SLM8
2 WM - G Series 9G17SLM3+AC5300/Netware 3/SLM8
3 WMS - G Series 9G17SLM3+AC5300/Netware 3/SLM8
4 WM – J Series 9GS01 -
5 CK - A/B/C/E Series 9G17/GS01 SLM3+AC5300/Netware 3/SLM8
6 CE - D Series 9G17SLM3+AC5300/Netware 3/SLM8
7 CE - E Series 9G17SLM3+AC5300/Netware 3/SLM8
8 CC - C Series 9SLM3 Netware 3 / SLM8
9 CC - D Series 9Netware 3 SLM3
10 SB - B/C Series
SB 75 – 100B/BR 9SLM3 Netware 3 / SLM8
SB 125 – 150B/BR 9SLM3 -
SB 125CR 9SLM3 -
SB 150B2/BR2 –
600B4/BR4
9SQ-LCD -
11 SB – D/ER Series
SB 75 – 100D/ER 9SLM3 Netware 3 / SLM8
SB 125 – 150D/ER 9SLM3 -
SB 125D2 – 500D4 9SQ-LCD -
SB 125ER2 –
600ER4
9SQ-LCD -
12 RT Series
RT 55 – 120A/AR 9SLM3 -
RT 150 – 420A/AR 9SQ-LCD -
5RT 90 – 250BR 9RT Panel -
13 WMX – F/G Series 9G17 SLM3 + AC5300
CKX – A/C Series 9G17 SLM3 + AC5300
CEX – E Series 9G17 SLM3 + AC5300
CCX – C Series
9SLM3 Netware 3 / SLM8
14 WMY – J Series 9G17/GS01 -
15 WMY – K Series 9APJ1 -
16 CKY – E Series
CEY – E Series
CCY – C Series
9
9
9
GS01
GS01
Netware 3C
Netware 3C
4

MCQUAY Service Guide Book Product Mainboard vs. Handset Matrix
5
Type
No.
Main Board (IC)
Model
W2 MC1.0 LWS2 APM01CB APM02D
Handset
Standard Optional
CW FCU
13 WM – GW Series 9G17 SLM3+AC5300/Netware 3/SLM8
14 CK – AW/MWH/CW Series 9G17 SLM3+AC5300/Netware 3/SLM8
15 CE – DW Series 9G17 SLM3+AC5300/Netware 3/SLM8
16 CE – EW Series 9G17 SLM3+AC5300/Netware 3/SLM8
17 CC – CW Series 9SLM3 Netware 3 / SLM8
18 SB – BW Series 9N/A -
Mini Chiller
19 AC – C Series
AC 20 – 60C/CR 9C. Panel -
AC 80 – 150C/CR 9C. Panel -
5AC 20 – 25C/CR 9C. Panel -
5AC 30 – 55C/CR 9C. Panel -
WSHP
20 5WMWS – GR 9G17
SLM3+AC5300/Netware 3/SLM8
21 5CKWS – AR/CR 9G17
SLM3+AC5300/Netware 3/SLM8
22 5CCWS – CR 9SLM3
Netware 3 / SLM8
23 WH – B Series
WH 11 – 20B/BR 9SLM15A -
WH 25 – 70B/BR 9APW04A -
5

MCQUAY Service Guide Book Handset Operating Guide
6
4.0 HANDSET OPERATING GUIDE
4.1 G6
Operation Guide
1. “ON/OFF” Switch
2. Temperature Setting
•Press button to increase or decrease
the set temperature. Setting range are
between 16°C to 30°C setting (60°F to
80°F) (Optional setting from 20°C to
30°C).
•Press ▲or ▼button simultaneously will
toggle the temperature setting between
°C and °F.
3. Automatic Air Swing
•The swing angle ranging from
horizontal to 25° to bottom.
4. “SLEEP” MODE
•This function can be activated in COOL,
HEAT & AUTO mode operation. If it is
activated in “COOL” mode, the set
temperature will be increase 0.5°C after
30 minutes, 1°C after 1 hour and 2°C
after 2 hours. Whereas in “HEAT” mode,
the set temperature will decrease by
1°C after 30mins, 2°C after 1 hour and
3°C after 2 hours.
5. Timer Setting
Press button to activate the timer setting
(from 1 hour to 15 hour) of the air
conditioning unit. To cancel the timer
setting, press the button continuously
until the timer display goes off.
6. Operation Modes
•Cooling only unit : Cool →Dry
→ Fan
•Heatpump unit : Auto →Cool
→Dry →Fan →Heat
7. Fan Speed and Ventilation Mode Selection
8. Signal Transmission Indication
•Blink to confirm the last setting has been
send to the unit.

MCQUAY Service Guide Book Handset Operating Guide
7
4.2 G7
Operation Guide
1. Transmission Source
2. Signal Transmission Indication
•Blink to confirm the last setting has
been send to the unit.
3. On/Off Button
4. Temperature Setting
•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.
5. Operation Mode
•Cooling only unit: COOL, DRY & FAN.
•Heatpump unit: AUTO, COOL, DRY,
FAN & HEAT.
6. Fan Speed Selection
7. On Timer Setting
8. Off Timer Setting
9. Automatic Air Swing (Optional)
•Press button to activate the automatic
air swing function. Press again to stop
the louver at the desired direction.
10. Sleep Mode Setting
•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.
11. Clock Time Setting
•Press button + or - to increase or
decrease the clock time.
12. 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.

MCQUAY Service Guide Book Handset Operating Guide
8
4.3 G11
Operation Guide
1. “ON/OFF” Button
2. Temperature Setting
•The temperature setting range is from
16°C to 30°C.
•Press both buttons simultaneously to
toggle and from ▲°C to▼°F setting.
3. Operation Mode
•Cooling only unit: COOL ( ), DRY ( )
and FAN ( ).
•Heat pump unit: AUTO, COOL ( ), DRY
(), FAN ( ) and HEAT ( ).
4. Fan speed selection
•Press the button continuously will toggle
the fan speed in the following order: Low
() –––: Med ( ) –––: High ( )
–––: Auto
5. ON Timer Setting
6. OFF Timer Setting
7. Automatic Air Swing
•Press the SWING ( ) button to activate
the automatic air swing function. Press
again to stop the louver at the desired
direction.
8. Sleep Mode Setting
•This function is available under COOL,
HEAT and AUTO mode.
•When the unit is operating under cooling
mode, the set temperature is increased
by 0.5°C after 30 minutes, 1°C after an
hour, and 2°C after 2 hours.
•When the unit is operating under heating
mode, the set temperature is decreased
by 1°C after 30 minutes, 2°C after an
hour and 3°C after 2 hours.
9. Clock Time Setting
•Press + button to increase the clock time.
•Press – button to decrease the clock
time.
10. Turbo Mode
•Press the TURBO ( ) button to achieve
the required set temperature in a short
time.
11. Ionizer
•Press the Ionizer ( ) button to activate
the negative Ion function, which will
refresh the indoor air effectively.
12. Personalize Setting
•Press button and hold for 3s to
initiate personalized setting
•Set the individual setting e.g. MODE,
SET TEMP or FAN SPEED and leave for
4s to save the setting into the program.
•2 groups of settings are allowed to store
in the handset. Press once to activate the
P1 setting, press again to cycle between
P1 and P2.
•Press any key to deactivate the
personalize setting.

MCQUAY Service Guide Book Handset Operating Guide
9
4.4 G17
Operation Guide
1. Transmission Source
2. Signal Transmission Indication
•Blink to confirm that the last setting
has been transmitted to the unit.
3. Temperature Setting
•Temperature setting range is from
16°C to 30°C (optional setting 20°C to
30°C).
4. Personalize Setting
•Press and hold for 3s, then will
blink. Press again to cycle between
and .
•Set the desire setting, then leave the
handset for 4s without pressing any key
and it will save the setting into the
program.
•Press once to activate the P1 setting,
press again to cycle between P1 and P2.
•Press any key to deactivate the
personalize setting.
5. Automatic Air Swing (optional)
•Press the SWING button to activate
the automatic air swing function. Press
again to stop the louver at the desired
direction.
6a. Silent Function (For WM – J Series only)
•Press
for quiet operation.
•Fan speed turn to minimum speed.
•Press again to deactivate the function.
6b. Ionizer Function (For WM - G series only)
•Press button to activate the negative
ion function, which will refresh the indoor
air effectively.
7. Sleep Mode Setting
•This function is available under COOL,
HEAT and AUTO mode.
•When under cooling mode, the set
temperature is increased by 0.5°C after
30 minutes, 1°C after an hour, and 2°C
after 2 hours.
•When under heating mode, the set
temperature is decreased by 1°C after 30
minutes, 2°C after an hour, and 3°C after
2 hours.
8. Operating Mode
•Press the MODE button to select the type
of operating mode.
•For cooling only unit, the available modes
are: COOL, DRY and FAN.
9. Fan Speed Selection
•Press the button continuously will
toggle the fan speed in the following
order:
Low Med High Auto
•Stop pressing when the desired fan speed
appears on the display screen.
10. “ON/OFF” Button
11. Timer Cancel
12. OFF Timer Setting
13. ON Timer Setting
14. Turbo Function
•Press for fast cooling.
•Fan speed turn to maximum speed.
•Press again to deactivate the function.
15. Clock Time Setting
•Press and hold to set the clock time.

MCQUAY Service Guide Book Handset Operating Guide
10
4.5 GS01
Operation Guide
1. Transmission Source
2. Signal transmission indication
•Blink to confirm that the last setting has
been transmitted to the unit.
3. ON/OFF Button
4. Fan Speed selection
•Press the button continuously will
toggle the fan speed.
5. Operation mode
•For cooling only unit: COOL , DRY
and FAN .
•For heat pump unit: AUTO , COOL
, DRY , FAN and HEAT .
•The AUTO mode is unavailable for
chilled water system.
6. Automatic air swing
•Press the SWING button to activate
the automatic air swing function. Press
again to stop the louver at the desired
direction.
Swing mode selection (for CK-E model)
•Press SWING button for 4 seconds to
enter field setting mode.
•While in field setting mode, it will only
show SWING MODE .
•Press temperature button to select
SWING MODE rotation from Swing
Mode 1 to Swing Mode 3.
•There are 3 different SWING MODE,
which are:
Mode 1 Mode 2 Mode 3
SWING MODE will not activate unless SWING is
activated.
•If no mode changes within 4 seconds, unit
will operate According to the selected
SWING MODE .
7. Turbo function (model dependent)
•Press for fast cooling or heating
operation.
•Fan speed turn to maximum speed for 15
minutes.
•Press again to deactivate the function.
•Available under HEAT, COOL and DRY
modes only.
1
2
3
4
5
6
7
8
9
10
11
12
13

MCQUAY Service Guide Book Handset Operating Guide
11
•Any change of fan speed will deactivate
this function.
•The Turbo function is unavailable for
chilled water system and remote control
with SWING MODE function.
8. OFF timer setting
9. Quiet function (model dependant)
•Press for quiet operation.
•Fan speed turn to minimum speed.
•Press again to deactivate the function.
•Any change of fan speed will deactivate
this function.
•The Silent function is unavailable for
chiller water system.
10. Clock time setting
•Press and hold button to set the clock
time.
11. ON timer setting
12. Sleep mode setting
•This function is available under COOL,
HEAT and AUTO mode.
•When under cooling mode, the set
temperature is increased by 0.5°C after
the first half an hour, another 0.5°C after
the second half an hour and 1°C after the
following 1 hour.
•When under heating mode, the set
temperature is decreased by 1°C after the
first half an hour, another 1°C after
second half an hour and 1°C after the
following hour.
13. Temperature setting
•The temperature setting range is from
16°C to 30°C (Optional setting 20°Cto
30°C).
•Press both buttons ▲and ▼
simultaneously to toggle from °C to °F
setting.

MCQUAY Service Guide Book Handset Operating Guide
12
4.6 APJ1
Operation Guide
1. Transmission Source
2. LCD Display
3. ECONO button
•ECON operation is a function which
enables efficient operation by limiting the
maximum power consumption value.
•This function is useful for cases which
attention should be paid to ensure a
circuit breaker will not trip when the
product runs along side other appliances.
•Press button to start ECONO
operation. The symbol is displayed on
the LCD.
•Press button to cancel ECONO
operation. The symbol button
disappears from the LCD.
4. POWERFUL Button
•POWERFUL operation quickly maximizes
the cooling / heating effect in any
operation mode.
•To start POWERFUL operation,
press button. is displayed
on the LCD. POWERFUL operation ends
in 20 minutes. Then the system
automatically operates again with the
previous settings which were used before
POWERFUL operation.
•To cancel POWERFUL operation, press
button again. disappears
from the LCD.
5. Temperature Settings.
6. ON/ OFF button
7. Mode Selector Button
•It selects the operation mode (AUTO/
DRY/ COOL/ HEAT/ FAN).
•Press MODE button to select operation
mode. Each pressing of the button
advances the mode setting in sequence.
8. FAN Operation
•5 levels of airflow rate setting from to
plus & are available.
•When the airflow is set to , the noise
from the indoor unit will become quieter.
9. SWING Operation
•To start auto swing, press button
and the symbol is displayed on the
LCD.
1
2
4
56
78
9
10
11
12 13
3

MCQUAY Service Guide Book Handset Operating Guide
13
•The flap (horizontal blade) will begin to
swing.
•To set the flap at desired position, press
button when the flap has reached
the desired position. The flap will stop
moving. The symbol disappeared from
the LCD.
10. COMFORT AIRFLOW Operation
•When COMFORT is enable, the flow of air
will be upward direction while in COOL
operation and in the downward direction
while in HEAT operation, which will
provide a comfortable wind that will not
come in direct contact with people.
•To start COMFORT AIRFLOW operation,
press COMFORT button. The flap will
change, preventing air from blowing
directly on the occupants of the room. The
symbol is displayed on the LCD.
•Air flow rate is set to AUTO. COOL/ DRY:
The flap will go up. HEAT: The flap will
go down.
•To cancel COMFORT AIRFLOW
operation, press COMFORT button
again. The flap will return to the
memorized position before the
COMFORT AIRFLOW operation.
•The symbol will disappear from the
LCD.
11. ON TIMER Operation
•To use ON TIMER operation, press
button.
•is displayed on the LCD. Each
pressing of advances the time
setting by 1 hour. The timer can be set
between 1 to 12 hours.
•To cancel ON TIMER operation, press
button. will disappear from the
LCD.
12. OFF TIMER Operation
•To use OFF TIMER operation, press
button.
•is displayed on the LCD. Each
pressing of advances the time setting
by 1 hour. The timer can be set between 1
to 9 hours.
•To cancel OFF TIMER operation, press
button. will disappear from the
LCD.
13. CANCEL Button

MCQUAY Service Guide Book Handset Operating Guide
14
4.7 SLM3
Operation Guide
1. “ON/OFF” Switch
2. Temperature Setting
•Setting range are between 16°C to 30°C
(60°F to 80°F).
3. Operation Modes
•Press the “mode” button for select the
type of operating mode.
-Cooling Only: COOL, DRY, FAN
-Heat Pump: AUTO, COOL, DRY,
HEAT, FAN
•AUTO mode is represented by both
COOL and HEAT LED light on.
4. Fan Speed Selection
•Press the button until the desired fan
speed is achieved.
5. Timer
•Press the set button to select the switch
timer of the air conditioner unit (the setting
range is between 1 to 15 hours).
6. “SLEEP” Mode
•This function can only be activated under
“cool” or heating mode operation. When it
is activated under “cool” mode operation,
the set temperature will increase 0.5°C
after 30 minutes, 1°C after 1 hour and 2°C
after 2 hours. If it is activated under
“HEAT” mode operation, the set
temperature will be decreased 0.5°C after
30 minutes, 1°C after 1 hour and 2°C after
2 hours.
7. Air Swing
•Press button to activate the automatic air
swing function.
8. Sensor
•Infra red sensor to receive signals from
wireless controller.
9. LED Display
•To display the set temperature (in °C) and
timer delay setting (in hours).
10. Transmission Source

MCQUAY Service Guide Book Handset Operating Guide
15
4.8 SLM8
No. KEY No. KEY
1 MODE 8 OFF TIMER
2 TURBO 9 ON TIMER
3 SWING 10 DELAY TIMER
4 QUEIT 11 FAN
5 SET TEMP UP 12 ON/OFF
6 SET TEMP
DOWN
13 REAL TIME
CLOCK (RTC)
7 SLEEP
Operation Guide
1. MODE Button
•Press the MODE button to switch
operation from COOL, HEAT, DRY*, FAN.
DRY mode is available for selected
models only.
2. TURBO Fan Speed
•Press the TURBO key once to activate
Turbo fan speed. Turbo symbol will be
shown. To disable Turbo fan speed and
BACK to previous fan speed, press the
Turbo key once again. If user presses the
FAN button or QUIET button or turn off
the unit, the turbo speed will be disabled.
This speed is only valid during COOL
mode for selected models.
3. Automatic Air Swing
•Press the SWING button to activate
the automatic air swing function. Press
again to stop the louver at the desired
direction.
Swing mode selection (for selected model)
•Press SWING button for 4 seconds to
enter field setting mode.
•While in field setting mode, it will only
show SWING MODE .
•Press temperature button to select
SWING MODE rotation from Swing
Mode 1 to Swing Mode 3.
•There are 3 different SWING MODE,
which are:
Mode 1 Mode 2 Mode 3
SWING MODE will not activate unless SWING is
activated.
•If no mode changes within 4 seconds, unit
will operate According to the selected
SWING MODE .
4. Quiet Fan Speed
•Press the QUIET key once to activate
Quiet fan speed. QUIET symbol will be
shown.
•To disable Quiet fan speed and BACK to
previous fan speed, press the QUIET key
again.
•If user presses the FAN button or TURBO
button or turn off the unit, the quiet speed
will be disabled. This speed is only valid
during COOL mode for selected models.
5. Temperature Setting
•Press the temperature button and set the
temperature of your choice by pressing
“ ” or “ ” button once,
temperature changes by 1°C or 1°F. The
default temperature setting range is from
16°C to 30°C (60°F to 86°F).
•Pressing both keys simultaneously will
toggle the temperature setting between ºC
and ºF.
•No temperature setting is allowed during
FAN mode (No set temperature display).
There is no room temperature display.
6. SLEEP Function
•Press the SLEEP button to activate the
sleep mode. SLEEP function is not
available in DRY mode and FAN mode.
7. ON TIMER and OFF TIMER
•The unit has 2-event timer, namely Timer
1 and Timer 2, each event has an ON
TIMER and an OFF TIMER.
•All timers are event-triggered timers and
can be overridden by the ON/OFF button
and Override function.

MCQUAY Service Guide Book Handset Operating Guide
16
Set Event 1 and Event 2 Timers
•Process for Timer ON and Timer OFF is
the same.
•Press and hold Timer ON/OFF key for 3
seconds to go into timer setting mode.
(Icon ON 1 or OFF 1 will blink)
•Press UP or DOWN to select Timer 1 or
Timer 2 to set. (‘1’ blinking indicate that
Timer 1 is currently selected, ‘2’ blinking
indicate that Timer 2 is currently selected)
•Press Timer ON/OFF key again to
confirm. (Day will blink next)
•Press UP or DOWN to select the day.
•Press Timer ON/OFF key again to confirm
the day. (Hour will blink next)
•Press UP or DOWN to change the hour.
•Press Timer ON/OFF key again to confirm
the hour. (Minute will blink next)
•Press UP or DOWN to change the minute.
•Press Timer ON/OFF key again to confirm
the minute.
•Each timer (Timer 1 ON or Timer 1 OFF
or Timer 2 ON or Timer 2 OFF) will only
be set separately, if there is no key
operation for 5 seconds during setting the
timer, it will automatically exits from
setting mode and no changes will be
made.
•ON/OFF timer will be checked every 1
minute. It is not advisable to set ON
TIMER and OFF TIMER to have same
values. Shall these occur, the effective
timer will be treated with priority as stated
in Table below:
Table: Timer Priority
Priority Timer
1 (Highest) ONTMR2
2 OFFTMR2
3 ONTMR1
4 (Lowest) OFFTMR1
•Upon IR reception, IR wireless remote
controller will override ON TIMER 2 and
OFF TIMER 2 settings.
Example:
ON TMR 2 setting : DAY TUE, TIMER 5.00pm
OFF TMR 1 setting: DAY TUE, TIMER 5.00pm
Outcome when RTC reaches 5.00pm on TUE:
−when unit is on, no respond.
−when unit is off, unit will turn on.
8. DELAY TIMER Function
•Press the DELAY TIMER key once will
activate the delay timer function for 1
hour. An indicator “OVERRIDE” will show
on the LCD.
•Press the same key again will increase
the setting to 2 hours. An indicator
“OVERRIDE” will be shown. Subsequent
press will deactivate the delay timer
function.
•After the delay timer is completed, the
delay timer function is deactivated and the
logo is OFF. All other timers will be
resumed.
9. FAN Speed
•Fan speed can be changed via pressing
the FAN key:
Low > Med > High > Auto >
•FAN speed is not available in DRY mode.
10. ON/OFF Button
11. Real-time Clock Display
•RTC is shown on screen during the unit
ON or OFF except for power failure or
error code.
Set RTC Setting
−Press RTC key one time will activate RTC
setting mode. (Day will blink)
−Press UP or DOWN to select the day.
−Press RTC again to confirm the day.
(Hour will blink next)
−Press UP or DOWN to change the hour.
−Press RTC again to confirm the hour.
(Minute will blink next)
−Press UP or DOWN to change the minute.
−Press RTC again to confirm the minute.
•RTC will only be set after all 7 steps, if
there is no key operation for 5 seconds
during setting the RTC, it will
automatically exits from setting mode and
no changes will be made.
12. Key Lock
•Press and hold both TURBO and QUIET
keys for 5 seconds will activate/deactivate
the key lock function; “KEYLOCK” will be
shown/disappear on LCD. Upon all the
keys are locked, only ON/OFF, TURBO
and QUIET (to unlock) can be pressed.

MCQUAY Service Guide Book Handset Operating Guide
17
4.8 Sequential Controller
Operating Guide
1. “ON/OFF” Switch
•Caution: In the case when the ON/OFF
key is pressed immediately after the
operation is stopped, the unit will not
restart until 3 minutes later to protect the
compressor.
2. Selecting Operating Mode
•Press the MODE key to select the type of
operating mode. Consecutive press of the
key switches the operation over “COOL”,
“HEAT”, “AUTO” and “FAN”
3. SAVE Mode
•Press the SAVE key to select the energy
saving function. This option is only
available for “COOL”, “HEAT” and “AUTO”
modes.
4. Auxiliary Electric Heater
•If the “HEAT” mode provides insufficient
heating to a room even at the highest
temperature setting (30°C), press the
HEATER key to activate the auxiliary
electric heater. For models with two
heaters, consecutive press of the key
allows the selection of one or both heaters
active.
5. Temperature Setting
•To set the desired room temperature,
press or to increase or
decrease the set temperature in the range
of 16°C to 30°C.
•Press both and
simultaneously to toggle between °C and
°F setting.
6. Time Setting
Real time clock
•Press the CLOCK key once to activate
set clock mode.
•Press again to disable set clock mode.
•Under set clock mode, the time of the
present day can be set by pressing the
respective MINUTE, HOUR and DAY key.
7 days timer
•Press the ON TIMER key to activate auto
ON timer mode. Under this mode, press
the respective MINUTE, HOUR and DAY
key to select the time of the week when
the air-conditioning unit is to automatically
start running. Press ON TIMER key again
to save the setting.
•Press the OFF TIMER key to activate
auto OFF timer mode. Under this mode,
press the respective MINUTE, HOUR and
DAY key to select the time of the week
when the air-conditioning unit is to
automatically stop running. Press the ON
TIMER key again to save the setting.
•Then to activate the 7 days timer, press
the HOLD key until the word “TIMER
ACTIVE” appears on the LCD screen.
Repeat the same step to disable the 7
days timer.
7. Other Function
Key Lock
•Press the MINUTE key 3 times
consecutively to activate the key lock. A
“KEY LOCK” symbol will appear on the
LCD screen. At this point, only the
ON/OFF key is valid.
•To disable the key lock, again press the
MINUTE key 3 times consecutively.
Test Run
•Press the TEST RUN key 2 times
consecutively to test run the unit.
4.9 Netware 3 / Netware 3C
A : Time F : Energy saving mode
B : Error indication G : Compressor defrost
C : Comp. running cycle (up to 4 comps.)
(up to 4 comps.) H : Operation mode
D : Key lock I : Temperature set
E : Heater (up to 2 heaters)

MCQUAY Service Guide Book Handset Operating Guide
18
Differences between Netware 3 & Netware 3C:
Netware 3 Netware 3C
Compatibility Non-inverter / X-inverter
Series Y-inverter Series
Casing Color Dark Silver White
Retrieve Last State Error No Yes
Pump Down No Yes
Applicable model All except A(5)WM-J/JR
For MCK-E, only applicable
with nomenclature ACOBB
All except M5WMY-J/JR
NIM/G-WAY Yes
For MCK-E, only applicable
with nomenclature ACOBB
No
Operating Guide
1. “ON/OFF” Switch
•Caution: In the case when the ON/OFF
key is pressed immediately after the
operation is stopped, the unit will not
restart until 3 minutes later to protect the
compressor.
2. Selecting Operating Mode
•Press the MODE key to select the type of
operating mode. Consecutive press of the
key switches the
•operation over “COOL”, “HEAT”, “AUTO”,
“DRY” and “FAN”
3. Fan Speed Selection
•Press the FAN key until the desired fan
speed is achieved.
4. Sleep Mode Setting
•Press the SLEEP key to activate sleep
mode. 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.
Jumper
20 - 30
Application
SET Set temp range : 20°C ~ 30°C
OFF Set temp range : 16°C ~ 30°C
1. Time display
2. Key lock display
3. Error indication
4. Fan speed display
5. Operation mode display
6. Sleep mode display
7. Air swing display
8. Temperature set display

MCQUAY Service Guide Book Handset Operating Guide
19
•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.
5. Temperature Setting
•To set the desired room temperature,
press or to increase or
decrease the set temperature in the range
of 16°C to 30°C.
•Press both and
simultaneously to toggle between °C and
°F setting.
6. Air Swing
•Press the SWING key to activate the
automatic air swing function.
7. Time Setting
Real time clock
•Press the CLOCK key to activate set
clock mode. Press again to disable set
clock mode.
•Under set clock mode, the time of the
present day can be set by pressing the
respective MINUTE, HOUR and DAY key.
7 days timer
•The unit has 3 event functions; each
event has an ON TIMER and an OFF
TIMER. Press the timer key (ON
TIMER/OFF TIMER) will enable Event 1
timer setting mode. Press same key again
will enable Event 2 timer setting mode.
Press the 3rd times will enable the Event
3 (Event handset) timer setting mode.
Subsequent key pressed the unit will quit
from timer setting mode.
Set Event 1 and Event 2 Timers
•Under timer setting mode, “SET TIMER”
will be shown on LCD and blink at 0.5 sec
interval. For Event 1 Timer setting, ‘ON’ or
‘OFF’ indication will appear and digit “1”
will be displayed on the top left corner of
the LCD. ‘ON’ or ‘OFF’ indication and digit
“2” will be displayed during Event 2 timer
setting. The timer setting can be changed
through pressing the DAY key, HOUR key
or MINUTE key. If
there is no further time related (DAY,
HOUR and MINUTE) key is pressed, the
unit will quit from the timer setting mode.
Set Event 3 Timer via remote control (Optional)
•This timer can be controlled separately
through remote control as well as ON
TIMER or OFF TIMER keys. Timer 3 can
be set like timers 1 and 2 like above
except the DAY setting is not provided as
this timer setting is valid everyday. An
indicator ‘3’ will display during the Event 3
timer setting mode. ‘ON’ or ‘OFF’ will blink
at 0.5 sec interval during the timer setting.
If there is no further time related (DAY,
HOUR and MINUTE) key is pressed, the
unit will quit from the timer setting mode.
Activating and canceling timers
•These timers will not trigger if the timer is
not active. To activate the timers, press
the TIMER ACTIVE key unit “TIMER
ACTIVE” appears on LCD. This symbol is
to indicate Event 1, Event 2 and/or Event
3 timers are active. Pressing the same
steps will deactivate the timers and
“TIMER ACTIVE” symbol will disappear.
•Another method to cancel the timers
setting is changed all the hour setting of
the timers to null, the LCD display --:--,
then this respective timer will be disable.
8. Other Function
Key Lock
•Press the MINUTE key 3 times
consecutively to activate the key lock. A
“KEY LOCK” symbol will appear on the
LCD screen. At this point, only the
ON/OFF key is valid.
•To disable the key lock, again press the
MINUTE key 3 times consecutively.
Fan Lock
•When the DAY key is press 3 times
consecutively within 1.5 sec, the fan
symbol will disappear and fan key will be
inhibited. Press the DAY key 3 times to
cancel the fan lock function.
4.10 Rooftop Panel