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Summary of Contents for Hiyasu HS-9U2IM
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Page 1: Service Manual
Service Manual Multi Split Type Heat Pump Air Conditioners Applied to: HS-9U2IM_HOS-18U2IM HS-9U11IM_HS-12U11IM_HOS-21U11IM www.enindel.com... -
Page 2: Table Of Contents
CONTENT 1. Product features 2. Specification 3. Dimensions 4. Refrigeration cycle diagram 5. Operation limits 6. Indoor unit combination 7. Wiring diagram 8. Electric control functions 9. Troubleshooting 10. Exploded view Annex 1 Characteristic of temp. sensor Annex 2 Reference data www.enindel.com... - Page 3 Service manual Product Features 1.1 Powerful at cooling/heating. 1.2 Low voltage start-up function. 1.3 Anti-icing function at cooling mode. 1.4 Anti-cold air function at heating mode. 1.5 Auto-defrosting. 1.6 Outdoor electric current protection 1.7 Temperature protection of the outdoor compressor top. 1.8 Error self diagnosis function.
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Page 4: Specification
Service manual 2 Specification 2.1 Alfa series HS-9U11IM_HS-12U11IM_ HS-9U2IM_HOS-18U2IM HOS-21U11IM Model MSHI-09HRIN1 MSHI-12HRIN1 Power supply Ph-V-Hz 1Ph,220-240V~,50Hz 1Ph,220-240V~,50Hz Capacity Btu/h 9000 12000 Cooling Input Rated current 0.16 Capacity Btu/h 11000 14000 Heating Input 39.5 Rated current 0.16 Model RPG13H RPG20D Brand WEILING WEILING... - Page 5 Service manual 2.2 Outdoor unit HOS-18U2IM HOS-21U11IM Outdoor Model M2OA-18HRDN1 Double Indoor Units Combination Single Power supply Ph-V-Hz 1Ph,220-240V~,50Hz Capacity Btu/h 7000 12000 18000 Capacity 5275 Input 1000~1300 1644 Cooling Rated current 4.6~6.0 Btu/w.h 10.95 3.21 Capacity Btu/h 10000~14000 21000 Capacity 6155 Input...
- Page 6 Service manual Dimension(W*H*D) 845X695X335 Outdoor unit Packing (W*H*D) 975X772X405 Net/Gross weight 68/72 Refrigerant type R410A g 2150 Design pressure(Hi/Lo) 4.2/2.5 Liquid side/ Gas side mm(inch) Ф6.35/Ф9.53 Ф6.35/Ф9.53 Transfer Connector(9.53 mm(inch) 12.7) Refrigerant piping Max. refrigerant pipe length Max. difference in level Connection wiring Plug type Thermostat type...
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Page 7: Dimensions
Service manual 3 Dimensions 3.1 Alfa Series a) Indoor unit 7/9K b) Indoor Unit 12K www.enindel.com... - Page 8 Service manual 3.2 Outdoor unit www.enindel.com...
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Page 9: Refrigeration Cycle Diagram
Service manual 4 Refrigeration Cycle Diagram 4.2 Refrigeration circuit drawing of inverter binary type outdoor unit inverter compressor high-pressure switch 1 oil separator discharge sensor part capillary capillary heat down exchanger filter part capillary filter condenser low-pressure oil tank 4-way valve heat exchanger... -
Page 10: Wiring Diagram
Service manual 7. Wiring Diagram 7.1 Indoor unit (7k/9k/12k) www.enindel.com... - Page 11 Service manual HOS-18U2IM HOS-21U11IM 7.2 Outdoor unit M2OA-18HRDN1 www.enindel.com...
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Page 12: Electric Control Functions
Service manual 8 Electronic control function 8.1 Electric Control working environment. 8.1.1 Input voltage: 175~253V. 8.1.2 Input power frequency:50Hz. 8.1.3 Indoor fan normal working amp. is less than 1A. 8.1.4 Outdoor fan. Normal working amp. is less than 1.5A. 8.1.5 Four-way valve normal working amp. is less than 1A. 8.1.6 Swing motor: DC12V. - Page 13 Service manual In compressor pre-heating, The LED displays “1 1” In protection or malfunction, the LEC displays error code or protection code. 8.4 Outdoor unit point check function There is a check switch in outdoor PCB. Push the switch SW1 to check the states of unit when the unit is running. The digital display tube will display the follow procedure when push SW1 each time: Frequency of compressor →Running mode →...
- Page 14 Service manual 8.4.5Outdoor ambient temp: Corresponding Corresponding Display Corresponding temp. Display Display temp. temp. -7.5 10.5 25.5 -6.5 11.5 26.5 -5.5 11.5 27.5 -4.5 12.5 28.5 -3.5 13.5 29.5 14.5 -1.5 30.5 15.5 -0.5 31.5 16.5 31.5 16.5 32.5 17.5 17.5 33.5 18.5...
- Page 15 Service manual 8.4.7Current of outdoor unit Display Corresponding mode 6.0 A 6.2 A 7.4 A 7.6 A 7.6 A 8.0 A 8.6 A 8.8 A 9.0 A 9.2 A 9.5 A 10.0 A 10.2 A 10.4 A 10.6 A 11.0 A 11.6 A 12.0 A 12.2 A...
- Page 16 Service manual information and can’t return to normal operation automatically. 8.5.8Cross Zero signal error warning. If there is no Cross Zero signals in 4 minutes, the unit stops and LED displays failure information and can’t return to normal operation automatically. 8.5.9Current protection: When the current is more than 16A, the compressor stops.
- Page 17 Service manual Anti-cold wind function prevails. Anti-cold wind control function at heating mode Condition Indoor fan speed Indoor exchanger temp. Indoor exchanger temp. T<34 34 <T<37 Breeze 37 <T<44 Low speed T> 44 Setting fan speed Indoor exchanger temp. T> 38 Setting fan speed down 33 <T<38...
- Page 18 Service manual d. Indoor fan running according to anti-cold wind function in heating mode. 8.11Automatic operation mode The air conditioner automatically selects one of the following operation modes: cooling, heating or fan only according to the temp. difference between room temp. (TA) and set temp.
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Page 19: Troubleshooting
Service manual In case of a sudden power failure, this function automatically sets the unit to previous settings before the power failure when power returns. 8.15 Plasma Plasma turns on when the indoor fan runs. Plasma turns off automatically when front panel is opened. 8.16 Mode conflict The indoor units can not work cooling mode and heating at same time.
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