Hiyasu HOS-18U2IM Service Manual Download Page 2

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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

CONTENT

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Summary of Contents for HOS-18U2IM

Page 1: ...HS 9U2IM_HOS 18U2IM HS 9U11IM_HS 12U11IM_HOS 21U11IM Service Manual Applied to Multi Split Type Heat Pump Air Conditioners www enindel com...

Page 2: ...ons 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 An...

Page 3: ...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...

Page 4: ...Indoor noise level Hi Mi Lo dB A Dimension W H D mm Packing W H D mm Liquid side Gas side mm Indoor unit Net Gross weight kg MSHI 09HRIN1 MSHI 12HRIN1 1Ph 220 240V 50Hz 1Ph 220 240V 50Hz 9000 12000 3...

Page 5: ...ax current A 16 Model JU1015D1 Type Rotary inverter Brand HITACH Capacity Btu h 16000 60Hz Input W 1650 Rated current RLA A 9 7 Locked rotor Amp LRA A 28 Compressor Thermal protector Internal HOS 18U2...

Page 6: ...ing Plug type Thermostat type Operation temp Ambient temp Qty per 20 40 40 HQ set Electronic control 17 30 17 43 cooling 7 21 heating Notes 1 Nominal cooling capacities are based on the following cond...

Page 7: ...5 Service manual 3 Dimensions 3 1 Alfa Series a Indoor unit 7 9K b Indoor Unit 12K www enindel com...

Page 8: ...6 Service manual 3 2 Outdoor unit www enindel com...

Page 9: ...part condenser capillary capillary filter filter 5 Operation Limits Indoor temperature 17 32 Cooling mode Outdoor temperature 10 50 Indoor temperature 30 Heating mode Outdoor temperature 15 33 Indoor...

Page 10: ...ng Diagram 7 1 Indoor unit 7k 9k 12k 1 225 1 02725 289 5 02725 1 1 1 1 1 1 1 1 1 1 6 5 7 5 1 1 287 225 81 7 0 1 2 5 1 1 0 52 6 7 6 2 75 16 250 5 5220 7 03 6 1625 3 3 7 03 6 1625 3 60 63 2 5 1 872 5 67...

Page 11: ...9 Service manual 7 2 Outdoor unit M2OA 18HRDN1 HOS 18U2IM AND HOS 21U11IM www enindel com...

Page 12: ...y or when the warm air control feature is activated in heating mode 8 2 4 TEMPERATURE indicator a Usually it displays the temperature settings When change the setting temperature this indicator begins...

Page 13: ...opening degree of electronic expansion valve No 3 opening degree of electronic expansion valve Frequency of compressor 8 4 1 Frequency of compressor Display Frequency of compressor Hz 30 30 Stand by...

Page 14: ...9 29 5 26 2 59 14 5 90 30 27 1 5 60 15 91 30 5 28 1 61 15 5 92 31 29 0 5 62 16 93 31 5 30 0 63 16 5 93 31 5 31 0 5 63 16 5 94 32 32 1 64 17 95 32 5 33 1 5 65 17 5 96 33 34 2 65 17 5 97 33 5 35 2 5 66...

Page 15: ...f compressor compressor stops when the temp of discharge is more than 115 and last out 5 s compressor runs when the temp of discharge is less than 90 8 5 3 Temperature protection of compressor top com...

Page 16: ...s operation for more than 3 hours or the outdoor temperature is lower than 3 and the power is just put on the compressor enters into pre heating condition When outdoor temp is more than 5 or user oper...

Page 17: ...Low 8 9 3Indoor evaporator high temperature protection at heating mode Condition T Indoor exchanger temp Compressor T 48 On 53 T 63 Decrease frequency of compressor T 63 Off Defrosting operation Avai...

Page 18: ...l be automatically off at the set time 8 13 4Timer on off function on time is earlier than off time first turn off the A C it will be automatically on at set time and later be off at the set time then...

Page 19: ...ct 8 16 2 Unit action x In case of one Indoor unit working in cooling mode or fan mode and another indoor unit is set to heating mode the indoor unit working in cooling mode or fan mode will change to...