McQuay MWM User manual

Service
Guide
Book

1
Table of Contents
Model Name
Product Name Description 2
Nomenclature 3
Conversion Table
Conversion Table 6
Product Mainboard vs. Handset Matrix
Product Mainboard vs. Handset Matrix 7
Controller Development History
Controller Development History 9
Handset Operating Guide
G6 11
G7 13
G11 15
G17 17
SLM3 19
Sequential LCD 21
Netware 3 23
Controller Configuration
Auto Random Restart 25
Hot Keep Selection 26
Auxiliary Heater Conversion 27
Multi Split Conversion 28
Sequential Controller 29
Chilled Water Fan Coil Unit – W1V3 34
Chilled Water Fan Coil Unit – W2.0 35
Service Diagnosis
Self Diagnosis Table 36
General Check 56
General Troubleshooting Guide 57
Appendix
Resistance – Temperature Characteristic Appendix-1

2
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 Ceiling Exposed Fan Coil Unit CE / 5CE MCM / M5CM 5 Ceiling Cassette Fan Coil Unit CK / 5CK MCK / M5CK 6 Ceiling Concealed Fan Coil Unit CC / 5CC MCC / M5CC 7 Ducted Split Blower Unit SB MDB 8 Chilled Water Fan Coil Unit CW MCW 9 Water Source Heatpump Split Unit WSS / 5WSS MWSS / M5WSS
10 Horizontal Water Source Heatpump Unit WH MWH 11 Air Cooled Mini Chiller AC / 4AC / 5AC MAC / M4MAC / M5MAC 12 Single Split Condensing Unit SL / 4SL / 5SL MLC / M4LC / M5LC 13 Single Split AC Inverter Condensing Unit SLV MLCV 14 Single Split DC Inverter Condensing Unit 5SLX M5LCX 15 Modular Split Condensing Unit MSS / 4MSS MMC / M4MC 16 Multi Split Series MSD / 4MSD MMSD / M4MSD
MST / 4MST MMST / M4MST
MSH MMSH
17 Multi Split AC Inverter Condensing Unit MSV MMSV 18 Multi Split DC Inverter Condensing Unit 5MSX M5MSX 19 Horizontal Condensing Unit HDC / 5HDC MHDC / M5HDC 20 Vertical Condensing Unit VCU MVCU 21 Air Cooled Roof Top Packaged Air
Conditioner
RT / 4RT MRT / M4RT
22 Air Cooled Inverter Mini Chiller 5ACV M5ACV
Model Name

3
Nomenclature
Indoor Unit
M
WM
010
G
R
-
A
C
I
A
A
Electrical
A : 220-240V/1Ph/50Hz
F : 380-415V/3Ph/50Hz
Market Region
C : Export with CE mark
Air Treatment Devices & Control
I : Negative Ion
L : Bare Unit
Grille Type
A : Grille A
Others
A : First Issue
Model Name
WM : Wall Mounted
CK : Ceiling Cassette
Capacity
010 : 10,000 Btu/h
Model Type
R : Heat Pump
Omitted if Cooling Only
Series
G : G Series
Brand
M : McQuay
Refrigerant
5 : R410A
Omitted if R22

4
M
WM
010
G
W
-
A
X
A
A
Electrical
A : 220-240V/1Ph/50Hz
F : 380-415V/3Ph/50Hz
Product Specifications Variation
AA : Revision
Connection Type
F : Flare
X : Not Applicable
Model Name
WM : Wall Mounted
CK : Ceiling Cassette
Series
G : G Series
Piping
H : 4 Pipes System
Omitted if 2 pipes system
Capacity
010 : 10,000 Btu/h
Brand
M : McQuay
Model Type
R : Heat Pump
W : Chilled Water Fan Coil
Omitted if DX Cooling Only
Refrigerant
5 : R410A
Omitted if R22
Indoor Unit

5
Indoor Unit
M
LC
010
C
R
-
A
C
P
O
A
Electrical
A : 220-240V/1Ph/50Hz
F : 380-415V/3Ph/50Hz
Market Region
C : Export with CE mark
Compressor
P : Panasonic
M : Mitsubishi
Specifications Variation
O : Standard Unit
I : Gold Fins
G : Low Ambient Unit
H : High Ambient Unit
Others
A : First Issue
Model Name
LC : Single Split Condensing Unit
MC : Modular Split Condensing Unit
Capacity
010 : 10,000 Btu/h
Model Type
R : Heat Pump
Omitted if Cooling Only
Series
C : C Series
Brand
M : McQuay
Refrigerant
5 : R410A
Omitted if R22

6
Conversion Table
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
W.G. Pascal
PSI kg/cm2
(in.) (ft.) (Pa)
1 0.07 27.7 2.309 0.69 x 104
14.22 1 394.08 32.84 9.81 x 104
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 m3/hr m3/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 m3U.S. G.P.M. ft3
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
in2ft2m2cm2
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 104
0.155 1.076 x 10-3 1 x 10-4 1
°F = (18 x °C) + 32
8.1
32
o
o F C

7
Product Mainboard vs.
Handset Matrix
Handset
Type No.
Main Board (IC)
Model
L2.0 L208A U1SB125 SQ2.0 VA2.0 Standard Optional
1 WM - F Series X G7 SLM3 + AC5300 / Netware 3 2 WM - G Series X G11 SLM3 + AC5300 / Netware 3 3 WMS - G Series X G11 SLM3 + AC5300 / Netware 3 4 CK - A/B/C Series X G7 SLM3 + AC5300 / Netware 3 5 CE - D Series X G7 SLM3 + AC5300 / Netware 3 6 CE - E Series X G11 SLM3 + AC5300 / Netware 3 7 CC - C Series X SLM3 Netware 3 8 CC - D Series X Netware 3 SLM3
SB - B/C Series SB 75 – 100B/BR X SLM3 Netware 3 SB 125 – 150B/BR X SLM3 - SB 125CR X SLM3 -
9
SB 150B2/BR2 – 600B4/BR4 X SQ-LCD -
SB – D/ER Series SB 75 – 100D/ER X SLM3 Netware 3 SB 125 – 150D/ER X SLM3 - SB 125D2 – 500D4 X SQ-LCD -
10
SB 125ER2 – 600ER4 X SQ-LCD -
RT Series RT 55 – 120A/AR X SLM3 -
11
RT 150 – 420A/AR X SQ-LCD -
WMX – G Series X SLM3 + AC5300 CKX – A/C Series X SLM3 + AC5300 CEX – E Series X SLM3 + AC5300
DX
12
CCX – C Series X SLM3 Netware 3
G11
G7
G11

8
Handset
Type No.
Main Board (IC)
Model
W2 MCH1 MC1.0 LWS2.0 APM01CB APM02D Standard Optional
13 WM – GW Series X SLM3 + AC5300 /
Netware 3
14 CK – AW/AWH/CW
Series XSLM3 + AC5300 /
Netware 3
15 CE – DW Series X SLM3 + AC5300 /
Netware 3
16 CE – EW Series X SLM3 + AC5300 /
Netware 3
17 CC – CW Series X SLM3 Netware 3
CW
FCU
18 SB – BW Series N/A -
AC – C Series AC 20 – 60C/CR X C. Panel - AC 80 – 150C/CR X C. Panel - 5AC 20 – 25C/CR X C. Panel -
Mini
Chiller
19
5AC 30 – 55C/CR X C. Panel -
20 5WMWS – GR X SLM3 + AC5300 /
Netware 3
21 5CKWS – AR/CR X SLM3 + AC5300 /
Netware 3
22 5CCWS – CR X SLM3 Netware 3
WH – B Series WH 11 – 20B/BR X SLM15A -
WSHP
23
WH 25 – 70B/BR X APW04A -
G11
G7 G7
G11
G7 G7

9
Controller Development History
Handset Model
Year Main Board Wireless Wired Cooling Heating Remarks
WM 10/15D WM 10/15DR Copper sensor
1996 Challenger 2.1 & 2.2 G3 - WM 20/25C WM 20/25CR 1996 Challenger 2.2 G3 - WM 07/10E - Copper sensor 1997 Challenger 2.4 G3 & G6 - WM 10/15D
WM 20/25C
WM10/15DR
WM 20/25CR
1998 Challenger 2.4 G3 & G6 - - WM 07/10ER
WM 10/15FR
1998 Challenger 5 G3
G6
- -
WM 07/10E
WM 10/15F -
1999
Challenger C3A Challenger C3B Challenger C3B
G3 & G6 SLM2 (10 core wire)
CK-A
CE-C/D
CC-B/MSB/HSB
CK-AR
CE-CR/DR
CC-R/MSB-R/HSB-R
2000 Mini Chiller MCH01 - - AC (40-125)B AC (40-125)BR Cooling & Heatpump 2001 Chilled Water W1V2 G6 Netware 1 WM-FW / CE-DW / CC-CW / CK-AW / HSB-
BW Convertible PCB
2001 Sequential Controller - Sequential Controller SB (150-500)B SB (150-500)BR Multiple compressor
Universal Board D1.0 G6 - WM (10-25)F - Cooling only U1.3 G6 - - WM (10-25)FR Heatpump only
2001
U1.4 G6 SLM3 (4 core wire) CE-D / CK-A / CC-C CE-DR / CK-AR /
CC-CR Cooling & Heatpump
2001 D2.0 - WM (10-25)F - Cooling only 2001 Mini Chiller SZMC01 - - AC/4AC (40-58)A,
AC/4AC75-125B
AC/4AC (40-58)AR,
AC/4AC75-125BR Cooling & Heatpump
Inverter VA1.9 (Indoor) - - WMV10FR In set form only
2001
VB1.0 (Outdoor) SLV10BR
2002 Sequencer Controller - SQ-LCD SB (150-500)D SB (150-500)DR Multiple compressor
D2.0 - WM30F - Cooling only
2002 U1.4 SLM3 /
Netware 2 (optional) CK (15/20/25/30)B
WM (10-25)FR,
WM30FR
CK (15/20/25/30)BR
Heatpump only Cooling & heatpump
G6 / G7
G7 Turbo
G7 G7

10
Handset Model
Year Main Board Wireless Wired Cooling Heating Remarks
2002 Chilled Water W1V3 G6 SLM3 /
Netware 2 (optional) WM-FW / CE-DW / CC-CW / CK-AW / CK-BW Valveless application
only
2002 Multi Split Indoor, MS10.0 - - WMS (10-20)FR Auto random restart 2003 Mini Chiller MCH03A - SC302 AC/4AC(80-150)C AC/4AC (80-150)CR Cooling & heatpump 2003 Universal U1SB125 - SLM3 – single speed
SB (125/150)
B1/C1/D1
RT/4RT (60-120)A
SB (125/150)
BR1/CR1/DR1
RT/4RT (60-120)AR
Cooling & heatpump
RT/4RT (150-300)A RT/4RT (150-
300)AR
SB 150B2-600B4 SB 150BR2-600BR4
2003 Sequential Controller, SQ - SQ-LCD
SB 125D2-500D4 SB125DR2-500DR2
Cooling & heatpump
2004 U1.4 - CK (10-20)C CK (10-20)CR Cooling & heatpump
WM (07-15)G WM (07-15)GR
2004 L2.0 - WM (20-25)G WM (20-25)GR Cooling & heatpump
MC01 - Chiller Panel AC (80-150)C AC (80-150)CR Cooling & heatpump
2004 MCH01 - Chiller Panel AC (20-60)C AC (20-60)CR Cooling & heatpump
- CE (15-28)E CE (15-28)ER Cooling & heatpump
2005 L208A - Netware 3 CC (75-100)D CC (75-100)DR Cooling & heatpump
U1.4 - SLM3 SB (75-100)ER Universal U1SB125 - SLM3 – single speed SB (125-150)ER1
2005
Sequential Controller, SQ - SQ-LCD SB 125ER2-600ER4
Heatpump only
Inverter VA2.0 - 5WMX (10-25)GR In set form only
2005
5SLX (10-25)CR
2005 MC01 - Chiller Panel 5AC (030-055)CR Heatpump only
SLM3 / Netware 3 CE-D / CK-A/B/C /
CC-C
CE-DR / CK-
AR/BR/CR / CC-CR
2006 L208A
- SLM3 SB (75-100)B/D SB (75-100)BR/ER
Cooling & Heatpump
2006 Sequential Controller, SQ - SQ-LCD RT (360-420)A RT (360-420)AR Cooling & Heatpump 2006 Chilled Water W2 SML3 / Netware 3 WM-GW / CE-DW / CE-EW / CC-CW / CK-
AW/AWH/CW / SB-BW
G7 G7
G11 G11 G11
G7 & G11 G7 & G11

11
Handset Operating Guide
G6
Outlook
Operation Guide
1. “ON/OFF” Switch
vPress to start the air conditioner unit.
vPress again to stop the unit.
2. TemperatureSetting
vSet the desire room temperature.
vPress 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).
Pressor button simultaneously will toggle the temperature setting between °C and °F.
3. AutomaticAir Swing
vPress the button to activate the automatic air swing function. The swing angle ranging from horizontal
to 25oto bottom.
4. “SLEEP” MODE
vPress the button to activate sleep mode. This mode can only be activated while in cooling or heating
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.
vThis function is available under COOL, HEAT & AUTO mode.
TEMP
SLEEP
SWING
FAN
MODE
TIMER
2
1
7
6
5
4
3
8

12
5. Timer Setting
vPress set button to activate the timer setting (from 1 hour to 15 hour) of the air conditioning unit. It will
be in “On” or “Off” condition after the set time depending to the current condition (either from “On” to
Off” or vise versa)
vTo cancel the timer setting, press the button continuously until the timer display goes off.
6. Operation Modes
vPress the “mode” button for select the type of operating mode.
vCooling only unit:
CoolmDry mFan.
vHeatpump unit:
AutomCool mDry mFan mHeat
7. Fan SpeedandVentilationModeSelection
Press the button until the desired fan speed is achieved.
8. Signal Transmission Indication
Blink to confirm the last setting has been send to the unit.

13
G7
Outlook
Operation Guide
1. Transmission Source
vThe source where the signal will be transmitted.
2. Signal Transmission Indication
vBlink to confirm the last setting has been send to the unit.
3. On/Off Button
vPress once to start the air conditioner.
vPress again to stop the unit.
4. Temperature Setting
vTo set the desired room temperature, press the button to increase or decrease the set
temperature.
vThe temperature setting range is from 16°C to 30°C (Optional setting 18°C to 30°C).
vPress both buttons simultaneously to toggle the temperature setting between °C and °F.
C
L
O
C
K
S
L
E
E
P
O
F
F
T
I
M
E
R
S
W
I
N
G
O
N
T
I
M
E
R
SET CLR
MODE
SET CLR
AUTO
ON
OFF
AM
PM
MIN
HR
F
C
1
2
3
5
8
10
4
9
11
12
6
7

14
5. Operation Mode
vPress the MODE button to select the type of operating mode.
vFor cooling only unit, the available modes are : COOL, DRY & FAN.
vFor heat pump unit, the available modes are : AUTO, COOL, DRY, FAN & HEAT.
6. Fan Speed Selection
vPress the button until the desired fan speed is achieved.
7. On Timer Setting
vPress the SET button will activate the on timer function.
vSet 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.
vPress the CLR button to cancel the on timer setting.
8. Off Timer Setting
vPress the SET button will activate the off timer function.
vSet the desired off time by pressing the SET button continuously.
vPress the CLR button to cancel the off timer setting.
9. Automatic Air Swing (Optional)
vPress the SWING button to activate the automatic air swing function.
vTo distribute the air to a specific direction, press the SWING button and wait until the louver move to
the desired direction and press the button once again.
10. Sleep Mode Setting
vPress the button to activate sleep mode. This function is available under COOL, HEAT & AUTO
mode.
vWhen 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.
vWhen 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
vPress button + or - to increase or decrease the clock time.
12. Turbo Function (Optional – Only Applicable To Inverter Unit)
vPress button for fast cooling or heating operation.
vThe 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.
vThe temperature & fan speed will resume to user setting if the button is pressed again or after
20mins.
vAvailable under HEAT, COOL & DRY modes only.

15
G11
Outlook
Operation Guide
1. “ON/OFF” Button
vPress once to start the air conditioner unit.
vPress again to stop the unit.
2. Temperature Setting
vTo set the desired room temperature, press the ▲ ▼
▲ ▼
button to increase or button to decrease the
set temperature.
vThe temperature setting range is from 16°C to 30°C.
vPress both buttons simultaneously to toggle and from °C to °F setting.
3. Operation Mode
vPress the MODE button to select the type of operating mode.
vFor cooling only unit, the available modes are: COOL (e), DRY (S) and FAN (D).
vFor heat pump unit, the available modes are: AUTO, COOL (e), DRY (S), FAN (D) and HEAT ( ).
10
4
11
5
1
2
12
6
9
8
3
7

16
4. Fan speed selection
vPress the Dbutton continuously will toggle the fan speed in the following order: Low ( ) –––:
Med ( ) –––: High ( ) –––: Auto
vStop pressing when the desired fan speed appears on the display screen.
5. ON Timer Setting
vPress the SET button will activate the on timer function.
vSet 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 7.30am sharp.
vPress the CLR button to cancel the on timer setting.
6. OFF Timer Setting
vPress the SET button will activate the off timer function.
vSet the desired off time by pressing the SET button continuously.
vPress the CLR button to cancel the off timer setting.
7. Automatic Air Swing
vPress the SWING ( ) button to activate the automatic air swing function.
vTo distribute the air to a specific direction, press the SWING button and wait until the louver move
to the desired direction and press the button once again.
8. Sleep Mode Setting
vPress the SLEEP button will activate the sleep mode function. This function is available under
COOL, HEAT and AUTO mode.
vWhen 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.
vWhen 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
vPress + button to increase the clock time.
vPress – button to decrease the clock time.
10. Turbo Mode
v
11. Ionizer
vPress the button to activate the negative Ion function, which will refresh the indoor air effectively.
12. Personalize Setting
vbutton and hold for 3s to initiate personalized setting
vSet the individual setting e.g. MODE, SET TEMP or FAN SPEED and leave for 4s to save the
setting into the programme.
v2 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.
vPress any key to deactivate the personalize setting.
Press J
Press the TURBO ( ) button to achieve the required set temperature in a short time.

17
G17
Outlook
Operation Guide
1. Transmission Source
vThe source where the signal will be transmitted.
2. Signal Transmission Indication
vBlink to confirm that the last setting has been transmitted to the unit.
3. Temperature Setting
vTo set the desiredroom temperature,press the or button to increase or decrease
the set temperature.
vThe temperature setting range is from 16°C to 30°C (optional setting 20°C to 30°C).
4. Personalize Setting
vPress and hold for 3s, then will blink. Press again to cycle between and .
vSet the desiresetting, thenleave the handset for 4s withoutpressinganykeyand it will
save the setting into the programme.
vPress once to activate the P1 setting, press again to cycle between P1 and P2.
vPress any key to deactivate the personalize setting.
P1
P1
P2
▲ ▼
MODE
P1 P2
SLEEP
SET
CANCEL
ON TIMER
SET
CANCEL
OFF TIMER
3
48
5
6a 6b
7
9
1
2
10
14
15
13
11
12

18
5. Automatic Air Swing (optional)
vPress the SWING button to activate the automatic air swing function.
vTo distribute the air to a specific direction,press the SWING button andwaituntil the louver
move to the desired direction and press the button once again.
6a. Silent Function
vPress for quiet operation.
vFan speed turn to minimum speed.
vPress again to deactivate the function.
6b. Ionizer Function
vPress button to activate the negative ion function, which will refresh the indoor air effectively.
7. Sleep Mode Setting
vPress the SLEEPbutton willactivate the sleepmode function. This function is availableunder
COOL, HEAT and AUTO mode.
vWhentheunit is operating undercooling mode,thesettemperature is increased by 0.5°Cafter
30 minutes, 1°C after an hour, and 2°C after 2 hours.
vWhen the unit is operatingunderheatingmode, 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
vPress the MODE button to select the type of operating mode.
vFor cooling only unit, the available modes are: COOL ( ), DRY ( ) and FAN ( ).
9. Fan Speed Selection
vPress the button continuously will toggle the fan speed in the following order:
Low Med High Auto
vStop pressing when the desired fan speed appears on the display screen.
10. “ON/OFF” Button
vPress one to start the air conditioner unit.
vPress again to stop the unit.
11. Timer Cancel
vPress the TIMER CANCEL button to cancel the on timer setting.
12. OFF Timer Setting
vPress the OFF TIMER button will activate the off timer function.
vSet the desired off time by pressing the OFF TIMER button continuously.
13. ON Timer Setting
vPress the ON TIMER button will activate the on timer function.
vSetthedesired on time by pressingtheONTIMERbuttoncontinuously. If thetimer is set to
7.30am, the air conditioner will turn on at 7.30am sharp.
14. Turbo Function
vPress for fast cooling.
vFan speed turn to maximum speed.
vPress again to deactivate the function.
15. Clock Time Setting
vPress and hold to set the clock time.
e

19
SLM3
Outlook
SLMAC-5300 (OPTIONAL)
Operation Guide
1. “ON/OFF” Switch
vPress to start the air conditioner unit.
vPress again to stop the unit.
2. Temperature Setting
vSet the desired room temperature.
vPress button to increase or decrease the set temperature. Setting range are between 16oC to 30 oC
(60oF to 80 oF).
3. Operation Modes
vPress 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
vPress the button until the desired fan speed is achieved.
5. Timer
vPress the set button to select the switch timer of the air conditioner unit (the setting range is
between 1 to 10 hours).