technical & service manual split system air conditioner

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C. Check negative phase relay. (Only for 3-phase model) • Check negative phase relay to see if it has operated. D. Check magnetic contactor. E. Check indoor PCB Ass'y. F. Check compressor motor protector. • Check compressor motor internal protector. (49C) YES YES • Rewire power supply wires. • Check coil resistance of magnetic contactor. (MG) Outdoor heat exchanger coil is dirty or there are obstacles near air suction inlet. • Clean heat exchanger or remove obstacles. (Only for 3-phase model) • Check compressor motor overcurrent relay. (51C) It’s operated. • Check power supply voltage. Voltage is abnormally low. • Check compressor. There is a possibility of locked rotor. NO 90% or more of rated voltage. NO Temperature of compressor is abnormally high. YES Refrigerant gas shortage. YES Recover refrigerant. (R407C) Evacuate the air conditioner. Charge refrigerant in liquid state. (R407C) For compressor replacement refer to "10-5. In case of compressor malfunction". 29 CAUTION In case of leakage, do not add refrigerant. The unit must be vacuumed and recharged. This is because composition of refrigerant in the unit has been changed due to leakage. See "9-6. In case refrigerant is leaking".
8-3. Some part of air conditioner does not operate. 8-3-1. Only indoor fan does not run. • Check fan rotation. Turn fan gently once or twice by hand. • Measure resistance of indoor fan motor winding. OK • Check fan motor capacitor. 8-3-2. Only outdoor fan does not run. • Check fan rotation. Turn fan gently once or twice by hand. • Measure resistance of outdoor fan motor winding. OK • Check fan motor capacitor. Fan cannot be turned. Fan cannot be turned. 30 • Check fan casing foreign matter on inside. Fan motor burnout or foreign matter in bearings. • Check fan casing foreign matter on inside. Fan motor burnout or foreign matter in bearings. Remove foreign matter or repair. Repair or replace. Remove foreign matter or repair. Repair or replace.
Page 1 and 2: TECHNICAL & SERVICE MANUAL AWR222CL
Page 3 and 4: Table of Contents Page 1. OPERATING
Page 5 and 6: 2. SPECIFICATIONS 2-1. Unit Specifi
Page 7 and 8: 2-1. Major Component Specifications
Page 9: Outdoor Unit AER222SC3 Power source
Page 12 and 13: Outdoor Unit AER222SC AER222SC3 560
Page 14 and 15: 5. PERFORMANCE DATA 5-1. Performanc
Page 16 and 17: 5-2. Air Throw Distance Chart Indoo
Page 18 and 19: Indoor Unit AWR222CLE Outdoor Unit
Page 20 and 21: 6-2. Electric Wiring Diagrams Indoo
Page 22 and 23: Outdoor Unit AER222SC3 19 WARNING T
Page 24 and 25: 7-2. Freeze Prevention ● This fun
Page 26 and 27: 8. TROUBLESHOOTING 8-1. Check befor
Page 28 and 29: B. Circuit breaker trips in several
Page 30 and 31: D. Check transformer in indoor unit
Page 34 and 35: 8-3-3. Only compressor does not run
Page 36 and 37: 8-5. If a sensor is defective. 8-5-
Page 38 and 39: 9-3. Tools specifically for R407C
Page 40 and 41: (5) Recharging • Be sure to charg
Page 42 and 43: (6) Recharging • Be sure to charg
Page 44 and 45: 10. CHECKING ELECTRICAL COMPONENTS
Page 46: FILIBERTI S.p.A. ��

technical & service manual split system air conditioner

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