AirQ MSM-09HRN1 User manual

SERVICE MANUAL
AirQ AIRCONDITIONER
MULTI SPLIT TYPE
MSM-09HRN1
MSM-12HRN1
MSM-30HRN1
V1.0
Dec, 2007

4/8/2008R series service manual
PAGE 1 OF 20
Multi SERIES
1. Features ……………………………………………………………………….2
2. Function ……………………………………………………………………….2
3. Specification …………………………………………………………………..3
4. Dimensions ……………………………………………………………………6
5. Refrigeration c cle diagram …………………………………………………8
6. Wiring diagram ………………………………………………………………..9
7. Troubleshooting ……………………………………………………………….12
8. Electronic function …………………………………………………………….14
9. Characteristic of temp. sensor ……………………………………………..20

4/8/2008R series service manual
PAGE 2 OF 20
1. Features
1.1 Universal outdoor unit and indoor unit design
1.2 R410a refrigerant; Cooling & heating units
1.3 The indoor unit combination is as follow list:
OUTDOOR UNIT MODEL INDOOR UNIT COMBINATION
MSM-18HRN1 9K×2
MSM-21HRN1 9K+12K
MSM-27HRN1 9K×3
MSM-30HRN1 9K×2+12K
1.4 Working Temperature Range
Cooling Heating
Models
Indoor Low Indoor Hi Outdoor Low Outdoor Hi Indoor Low Indoor Hi
Outdoor Low Outdoor Hi
multi
on off 17 / 5 43 / 30
-7 24
2.Function
The function will be
operate in an operation
mode.
Indoor unit
Operation ON OFF by remote controller
Room temperature sensor.
Pipe temperature sensor.
Sensing by room temperature
Maintain the room temperature in accordance with the setting temperature.
Room temperature control
Indoor fan is dela ed for 5 sec at the starting.
Starting temperature control
high, med, low, breeze.
Indoor fan speed control
Light up in the VLED for each operation mode.
The unit will decide the louver direction according to operation mode.
Two-direction air vane
The fan is turn to low speed (cooling/heating).
The unit will be turn off at the seventh hour.
Sleep mode auto control
The function is usuall used in rain da s in
springtime or damp areas.
Independent dehumidification
Operation indication Lamps (VLED)
Air flow Direction control
Self-diag. function
Defrost mode
Prevent the cold wind at
the beginning of unit start.
Anti-cold function
Auto-restart function
Turbo mode

4/8/2008R series service manual
PAGE 3 OF 20
3. Specification
3.1 Indoor unit
Model MSM-09HRN1 MSM-12HRN1
Power suppl Ph-V-Hz 1ph-220-224V~-50Hz 1ph-220-224V~-50Hz
Capacit
Btu/h 8500 11000
Input W 51.5 51.5
Cooling
Rated current A 0.24 0.24
Capacit Btu/h 9000 12000
Input W 51.5 51.5
Heating
Rated current A 0.24 0.24
Model RPG20E RPG20E
Brand Welling Welling
Input W 45 45
Capacitor uF 1.5 1.5
Indoor fan
motor
Speed(hi/mi/lo) r/min 1260/1210/1100/1000 1260/1210/1100/1000
a.Number of rows 2 2
b.Tube pitch(a)x row pitch(b)
mm 21x13.37 21x13.37
c.Fin spacing
mm 1.3 1.3
d.Fin t pe (code) H drophilic aluminium H drophilic aluminium
e.Tube outside dia.and t pe mm φ7, innergroove tube φ7, innergroove tube
f.Coil length x height x width mm 538X252X26.74 538X252X26.74
Indoor coil
g.Number of circuits 2 2
Indoor air flow (Hi/Mi/Lo) m3/h 380 550
Indoor noise level (Hi/Mi/Lo) dB(A) 39/36/32 43/41/35
Dimension (W*H*D) mm 790X190X275 790X190X275
Packing (W*H*D) mm 865x265x350 865x265x350
Indoor unit
Net/Gross weight Kg 8.5/10 9/11
The unit has 3 mins dela between continuousl ON/OFF operations.
Outdoor unit
Power relay control
The h drophilic fin can improve the heating efficienc at operation mode.
Hydrophilic aluminum fin
It is onl operated in the heating operation mode except defrosting operation.
Discharge pipe temperature protect
Anti-rust cabinet
4 way valve control
Check point

4/8/2008R series service manual
PAGE 4 OF 20
Liquid side/ Gas side mm Ф6.35/Ф9.53 Ф6.35/φ12.7
3.2 Outdoor unit
Outdoor Model MSM-18HRN1 MSM-21HRN1
Power suppl Ph-V-Hz 1Ph,220-240V~,50Hz 1Ph,220-240V~,50Hz
Capacit
Btu/h 18000 21000
Capacit W 5275 6155
Input W 1680 2000
Rated current A 8.0 9.7
Cooling
EER w/w 3.1 3.04
Capacit
Btu/h 20000 24000
Capacit
W 5862 7034
Input W 1680 2050
Rated current A 8.0 9.8
Heating
EER w/w 3.45 3.42
Max. input power W 2280 2520
Max. current A 9.8 12.0
Starting current A 21.7 21.7
Model
PA108X1C-4FTDE ;
PA108X1C-4FTDE
PA108X1C-4FTDE ;
PA145X2C-4FT
T pe ROTARY ROTARY
Brand TOSHIBA TOSHIBA
Capacit Btu/h 8769 X 2 8769+12014
Input W 885X2 885+1200
Rated current(RLA) A 4.15X2 4.15+5.6
Locked rotor Amp(LRA) A 40X2 40+57
Thermal protector
Internal Internal
Capacitor uF 25uF/370VAC X 2 25+35uF/370VAC
Compressor
Refrigerant oil ml 350X2 350+480
Model YDK60-6 YDK60-6
Brand Welling Welling
Input W 111 111
Capacitor uF 4uFx2 4uFx2
Outdoor fan
motor
Speed r/min 830/650 830/650
a.Number of rows 2 2
b.Tube pitch(a)x row pitch(b)
mm 25.4x24 25.4x24
c.Fin spacing
mm 1.7 1.7
d.Fin t pe (code) H drophilic aluminium H drophilic aluminium
e.Tube outside dia.and t pe mm Ф9.53, Innergroove tube Ф9.53, Innergroove tube
f.Coil length x height x width
mm 810X610X44 810X610X44
Outdoor coil
g.Number of circuits
2/2 2/2
Outdoor air flow m3/h 2200 2200
Outdoor noise level dB(A) 56 56
Dimension(W*H*D) mm 895X655X345 895X655X345
Packing (W*H*D) mm 1050X780X470 1050X780X470
Outdoor
unit
Net/Gross weight Kg 76/82 76/82
Refrigerant t pe R410A g 980X2 900+1100
Design pressure(Hi/Lo) MPa 4.4/2.0 4.4/2.0
Liquid side/ Gas side mm(inch) Ф6.35/Ф9.53 Ф6.35/Ф9.53; Ф6.35/Ф12.7
Max. refrigerant pipe length
m 15 15
Refrigerant
piping
Max. difference in level
m 10 10
Connection wiring No
Plug t pe No

4/8/2008R series service manual
PAGE OF 20
Thermostat t pe
Electronic control
Operation temp ℃ 17-30
Ambient temp ℃ 18~43(cooling); -7~24(heating)
Outdoor Model MSM-27HRN1 MSM-30HRN1
Power suppl Ph-V-Hz 1Ph,220-240V~,50Hz 1Ph,220-240V~,50Hz
Capacit
Btu/h 27000 30000
Capacit
W 7913 8792
Input W 2570 2880
Rated current A 13.1 13.7
Cooling
EER w/w
3.03 3.02
Capacit
Btu/h 30000 34000
Capacit
W 8792 9965
Input W 2700 3070
Rated current A 13.3 14.2
Heating
EER w/w 3.22 3.22
Max. input power W 3600 3600
Max. current A 16.6 16.6
Starting current A 31.8 31.8
Model
PA200X2CS-4KU1；
PA145X2C-4FT
PA200X2CS-4KU1；
PA145X2C-4FT
T pe ROTARY ROTARY
Brand TOSHIBA TOSHIBA
Capacit Btu/h 16791+12014 16791+12014
Input W 1670+1200 1670+1200
Rated current(RLA) A 7.81+5.6 7.81+5.6
Locked rotor Amp(LRA) A 57+57 57+57
Thermal protector
Internal Internal
Capacitor uF 45+35uF/370VAC 45+35uF/370VAC
Compressor
Refrigerant oil ml 750+480 750+480
Model YDK50-4G1 YDK50-4G1
Brand Welling Welling
Input W 200 200
Capacitor uF 4uFx2 4uFx2
Outdoor fan
motor
Speed r/min 1150 1150
a.Number of rows 2 2
b.Tube pitch(a)x row pitch(b) mm 25.4x24 25.4x24
c.Fin spacing mm 1.7 1.7
d.Fin t pe (code) H drophilic aluminium H drophilic aluminium
e.Tube outside dia.and t pe mm Ф9.53, Innergroove tube Ф9.53, Innergroove tube
f.Coil length x height x width mm 813X812X44 813X812X44
Outdoor coil
g.Number of circuits
3/3 3/3
Outdoor air flow m3/h 3200 3200
Outdoor noise level dB(A) 58 58
Dimension(W*H*D) mm 860X830X330 860X830X330
Packing (W*H*D) mm 1000X985X425 1000X985X425
Outdoor unit
Net/Gross weight Kg 81/90 81/90
Refrigerant t pe R410A g 1550+1150 1550+1150
Design pressure(Hi/Lo) MPa 4.4/2.0 4.4/2.0
Liquid side/ Gas side mm(inch) Ф6.35/Ф9.53
Ф6.35/Ф9.53;
Ф6.35/Ф12.7
Max. refrigerant pipe length m 15 15
Refrigerant
piping
Max. difference in level m 10 10
Connection wiring No
Plug t pe No

4/8/2008R series service manual
PAGE 6 OF 20
Thermostat t pe
Electronic control
Operation temp ℃ 17-30
Ambient temp ℃ 18~43(cooling); -7~24(heating)
4 Dimension
4.1 Indoor unit dimension
Dimension
Mode W H D
9K 790 275 190
12K 790 275 190

4/8/2008R series service manual
PAGE 7 OF 20
4.2 Outdoor unit dimension
a) Outdoor unit 18K/21K
b) Outdoor unit 27K/30K

4/8/2008R series service manual
PAGE 8 OF 20
5. Refrigeration cycle diagram
“1 drives 3 s stem” is made up of one “1 drive 1 s stem” and one “1 drive 2 s stem”.
PMV1
1 drive 2 s stem
SV1：Primar four-wa valve SV2：Secondar four-wa valve PMV1，PMV2：Electronic expansive valve
T1，T2：Indoor pipe temperature sensor
Condenser
Four-wa valve
Evaporator
Compressor
1 drive 1 s stem
Notice：For 1 drives 2 system, there are two individual refrigerant circuit and two compressors, but for the 1drive 2
system in the 1 drive 3 system, there is only one refrigerant circuit and only one compressor.
PMV2
SV2
SV1
2＃ 1＃
T2
T1
refrigeration distributor
Compressor

4/8/2008R series service manual
PAGE 9 OF 20
6. Wiring diagram
6.1 Indoor unit