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Euro-Line ADR518CW Technical & Service Manual

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TECHNICAL & SERVICE MANUAL
ADR518CW
AE518SC
AE518SC3 / AER518SCL3
ADR518HW
AE518SH
AE518SH3 / AER518SH3
SPLIT SYSTEM AIR CONDITIONER
INDOOR UNIT
OUTDOOR UNIT
0.8180.224.0
OCTOBER 01

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  • Page 1 TECHNICAL & SERVICE MANUAL ADR518CW AE518SC AE518SC3 / AER518SCL3 ADR518HW AE518SH AE518SH3 / AER518SH3 SPLIT SYSTEM AIR CONDITIONER INDOOR UNIT OUTDOOR UNIT 0.8180.224.0 OCTOBER 01...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SPECIFICATIONS......................PAGE...3 MAJOR COMPONENT SPECIFICATION..................9 OTHERS COMPONENT SPECIFICATIONS................16 OPERATING RANGE........................21 DIMENSIONALE DATA.........................22 FUNCTION.............................24 REFRIGERANT FLOW DIAGRAM....................31 ELECTRIC WIRING DIAGRAM.....................32 TROUBLESHOOTING COOLING MODEL...................36 SAME PARTS OF AIR CONDITIONER DO NOT OPERATE............43 AIR CONDITIONER OPERATES,BUT ABNORMALITIES OCCUR..........44 TROUBLESHOOTING HEATING MODEL..................45 SAME PARTS OF AIR CONDITIONER DO NOT OPERATE............52 AIR CONDITIONER OPERATES,BUT ABNORMALITIES OCCUR..........55 IS SENSOR IS DEFECTIVE......................56...

  • Page 3: Aspecifications

    SPECIFICATIONS 1) UNIT SPECIFICATIONS INDOOR UNIT ADR518CW UNIT MODEL OUTDOOR UNIT AE518SC Power source 220 / 230 / 240V - 1 - 50 Hz PERFORMANCES COOLING BTU/h 16,900 Capacity W (Kcal/h) 4.950 (4,250) Air circulation (high - med - low) External static pressure (high speed) mm w.g.
  • Page 4 INDOOR UNIT ADR518CW UNIT MODEL OUTDOOR UNIT AE518SC3 Power source 400V - 3N - 50 Hz (4 wires) PERFORMANCES COOLING BTU/h 16,900 Capacity W (Kcal/h) 4.950 (4250) Air circulation (high - med - low) External static pressure (high speed) mm w.g. (Pa)
  • Page 5 INDOOR UNIT ADR518CW UNIT MODEL OUTDOOR UNIT AER518SCL3 Power source 400V - 3N - 50 Hz (4 wires) PERFORMANCES COOLING BTU/h 17.400 Capacity W (Kcal/h) 5900 (5070) Air circulation (high - med - low) External static pressure (high speed) mm w.g. (Pa)
  • Page 6 INDOOR UNIT ADR518HW UNIT MODEL OUTDOOR UNIT AE518SH Power source 220 / 230 / 240V - 1 - 50 Hz PERFORMANCES COOLING HEATING BTU/h 16.900 20500 Capacity W (Kcal/h) 4.950 (4.257) 6000(5160) Air circulation (high - med - low) External static pressure (high speed) mm w.g. (Pa) 5 (49) at shipment - 10 (98) using the Booster cable Moisture removal (high speed) ELECTRICAL RATINGS...
  • Page 7 INDOOR UNIT ADR518HW UNIT MODEL OUTDOOR UNIT AE518SH3 Power source 400V - 3N - 50 Hz (4 wires) PERFORMANCES COOLING HEATING BTU/h 16.100 19.800 Capacity W (Kcal/h) 4.700 (4.042) 5.800(6.744) Air circulation (high - med - low) External static pressure (high speed) mm w.g. (Pa) 5 (49) at shipment - 10 (98) using the Booster cable Moisture removal (high speed) ELECTRICAL RATINGS...
  • Page 8 INDOOR UNIT ADR518HW UNIT MODEL OUTDOOR UNIT AER518SH3 Power source 400V - 3N - 50 Hz (4 wires) PERFORMANCES COOLING HEATING BTU/h 16.400 21.500 Capacity W (Kcal/h) 4.800 (4.128) 6300(5418) Air circulation (high - med - low) External static pressure (high speed) mm w.g. (Pa) 5 (49) at shipment - 10 (98) using the Booster cable Moisture removal (high speed) ELECTRICAL RATINGS...

  • Page 9: Bmajor Component Specification

    MAJOR COMPONENT SPECIFICATIONS INDOOR UNIT UNIT MODEL ADR518CW / ADR518HW Power source 220 / 230 / 240V -1 - 50 Hz REMOTE CONTROL UNIT RCS-U251G CONTROLLER P.C.B. POW-U186GH Controls Microprocessor Control circuit fuse 250V - 3A Centrifugal Number ... dia. / length 2 ...
  • Page 10 Outdoor Unit AE518SC3 Part No. POW-C181BL Controller Control circuit fuse 250V – 5A Type Rotary (Hermetic) Compressor model C-2R173H8V- 80817C88D Source 380 – 400 V – 3N ~ 50 Hz Nominal output 1,700 Compressor oil ... Amount SUNISO 4GSD-T ... 800 Ω...
  • Page 11 Outdoor Unit AE518SC Controller PCB — Type Rotary (Hermetic) Compressor model P H 3 6 V T R T Nominal output 1,600 Compressor oil ... Amount DIAMOND... 900 Ω Coil resistance (Ambient temp. 20°C) C – R : 1.06 C – S : 2.03 Type Internal protector (OLR) Overload relay...
  • Page 12 Outdoor Unit AER518SCL3 Part No. POW-C181BL Controller Control circuit fuse 250V – 5A Type Rotary (Hermetic) Compressor model C-2RN173H8W 80807088 Source 380 – 400 V – 3N ~ 50 Hz Nominal output 1,700 Compressor oil ... Amount FV68S ... 800 Ω...
  • Page 13 Outdoor Unit Outdoor Unit AE518SH Controller PCB POW – C186GH Type Rotary (Hermetic) Compressor model S C I P H 3 6 V T R T Nominal output 1600 Compressor oil ... Amount DIAMOND..900 Ω Coil resistance (Ambient temp. 20°C) C –...
  • Page 14 Outdoor Unit AE518SH3 380 - 400 V - 3N ~ 50 Hz Power source 220 - 240 V ~ 50 Hz Control circuit POW-C186GH CONTROLLER PCB COMPRESSOR Rotary (Hermetic) Type C-R173H8M-806-389-88 Compressor model 380 - 400 V - 3N ~ 50 Hz Source 1700 Nominal output...
  • Page 15 Outdoor Unit AER518SH3 380 - 400 V - 3N ~ 50 Hz Power source 220 - 240 V ~ 50 Hz Control circuit POW-C186GH CONTROLLER PCB COMPRESSOR Rotary (Hermetic) Type C-2RN173H8A 80242088 Compressor model 380 - 400 V - 3N ~ 50 Hz Source 1700 Nominal output...

  • Page 16: Cothers Component Specifications

    OTHER COMPONENT SPECIFICATIONS Outdoor Unit AE518SC Power Relay G7L-2A-TUB Coil rating AC 200 – 240V, 50/60Hz Coil resistance kΩ (at 23°C) ( 21 ± 15% ) Contact rating AC 220V, 25A Thermostat (Fan Speed Control 23S) MQT5S-27YZJ 23.5°C +0 high Switching temp.
  • Page 17 Outdoor Unit AER518SCL3 Thermistor (Coil sensor TH3 / Air sensor TH4) PBC-41E-S4 / PBC-41E-S8 Resistance kΩ –20°C 40.1 ± 5% 20°C 6.5 ± 5% –10°C 24.4 ± 5% 30°C 4.4 ± 5% 0°C 15.3 ± 5% 40°C 3.0 ± 5% 10°C 9.9 ±...
  • Page 18 Outdoor Unit AE518SH Power Relay (PR) DFU24D1-F Coil rating DC 24V Ω (at 20°C) Coil resistance 650 ± 10% Contact rating AC 250V, 20A Starting Relay (SR) AMVL300A Coil rating AC 300V, 50Hz Coil resistance kΩ (at 23°C) 13.3 ± 2% Contact rating 20A AC Operating voltage...
  • Page 19 Outdoor Unit AE518SH3 Electro Magnetic Contactor (MG) HOE-10TB TH-5A Magnetic contactor Coil rating AC 220–240V, 50Hz / AC 240–260V, 60Hz Ω (at 25°C) Coil resistance 1,260 ± 10% Contact rating (Main) AC 440V, 8A Thermal relay (Overcurrent relay) Operating amperes Negative Phase Relay (47C) RDR-S400 Rating...
  • Page 20 Outdoor Unit AER518SH3 Electro Magnetic Contactor (MG) HOE-10TB TH-5A Magnetic contactor Coil rating AC 220–240V, 50Hz / AC 240–260V, 60Hz Ω (at 25°C) Coil resistance 1,260 ± 10% Contact rating (Main) AC 440V, 8A Thermal relay (Overcurrent relay) Operating amperes Negative Phase Relay (47C) RDR-S400 Rating...

  • Page 21: Doperating Range

    35°C BS / 22.5°C BU 52°C BS Cooling Minimum 19°C BS / 14°C BU,5 19°C BS Referred to the systems - ADR518CW - AER518SCL3 only (3 phase and low ambient version) INDOOR UNIT OUTDOOR UNIT Indoor air Outdoor air Function Temperature intake temp.

  • Page 22: Edimensionale Data

    DIMENSIONAL DATA Indoor unit ADR518SW...
  • Page 23 Outdoor Unit Air intake 4 – ø12 holes Air discharge Wide tube service valve ø12.7 (1/2") Narrow tube service valve ø6.35 (1/4") Unit : mm...

  • Page 24: Ffunction

    FUNCTION 1) ROOM TEMPERATURE CONTROL Cooling • Room temperature control is obtained by cycling the compressor ON and OFF under control of the room temperature sensor in the remote control unit. ROOM TEMPERATURE MORE THAN WITHIN WITHIN 5 MINUTES 3 MINUTES 5 MINUTES THERMO OFF SET T + 0,5 ϒC...
  • Page 25 Heating MORE THAN 5 MINUTES THERMO THERMO THERMO SET TEMP. T°C T-0.5°C ROOM TEMP. 5 MINUTES 5 MINUTES COMPRESSOR OUTDOOR 30 SECONDS 30 SECONDS INDOOR SET SPEED SET SPEED STANDBY LAMP INDOOR HEAT EXCH. COIL TEMP. 35°C 25°C SOLENOID COIL ON (REVERSING CYCLE) (4-WAY VALVE) OPERATION...
  • Page 26 2) FREEZE PREVENTION (COOLING) • This function prevents freezing of the indoor heat exchange coil. • When the compressor has been running for 10 minutes or more and the temperature of the indoor heat exchange coil falls below –1°C, the control circuit stops the compressor for at least 6 minutes. THERMO OFF THERMO ON ROOM TEMP.
  • Page 27 4) DEFROSTING OPERATION (Heating) • When the capacity of the unit has been decreesed due to frosting up of the outdoor heat exchanger during heating, the temperature drop gradient is detected by the microcomputer-controlled temperature sensing system, and defrosting operation is started. DEFROSTING FLOWCHART Compressor ON Temperature of indoor heat...
  • Page 28 5) DEFROSTING MODE TIMING CHART START OF DEFROSTING RELEASE OF DEFROSTING MAX. 11 MINUTES 32 SECONDS 32 SECONDS COMPRESSOR OUTDOOR 2 SECONDS 2 SECONDS SOLENOID COIL (4-WAY VALVE) INDOOR SET SPEED SET SPEED STANDBY LAMP INDOOR HEAT EXCH. COIL TEMP. 35°C RELEASE OF L L = Low low speed...
  • Page 29 3) For AER518SCL3 only (3 phase and low ambient version) • When the outside ambient temperature decreases, the rotation speed of the outdoor fan is regulated by means of the outdoor heat-exchanger sensor to prevent liquid back. • The rotation speed varies with indoor temperature conditions (Hatching area). •...

  • Page 30: Grefrigerant Flow Diagram

    REFRIGERANT FLOW DIAGRAM COOLING MODE Indoor unit Outdoor unit HEAT PUMP MODE Indoor unit Outdoor unit...

  • Page 31: Helectric Wiring Diagram

    To avoid electrical shock hazard, be sure to disconnect power before WARNING checking, servicing and/or cleaning ELECTRIC WIRING DIAGRAMS WARNING any electrical parts ADR518CW GRN/YEL UNIT TH1 (COIL) TH2 (ROOM) BODY THERMO 235V P-C PCB1 GRN/YEL REMOTE GRN/YEL CONTROL SWITCH...
  • Page 32 To avoid electrical shock hazard, be sure to disconnect power before Outdoor Unit AE518SC WARNING checking, servicing and/or cleaning AE518SC3 any electrical parts...
  • Page 33 To avoid electrical shock hazard, be Outdoor Unit AER518SCL3 sure to disconnect power before WARNING checking, servicing and/or cleaning any electrical parts...
  • Page 34 To avoid electrical shock hazard, be sure to disconnect power before Outdoor Unit AE518SH WARNING checking, servicing and/or cleaning any electrical parts...
  • Page 35 Outdoor unit AE518SH3 To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts.
  • Page 36 Outdoor unit AER518SH3 To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts.

  • Page 37: Itroubleshooting Cooling Model

    ELECTRIC SHOCK. b) Check inter-unit wiring. • Check that inter-unit wiring (both the power wiring and control wiring) is correctly connected to the indoor unit from the outdoor unit. OUTDOOR INTER-UNIT INDOOR ADR518CW- AE518SC WIRING UNIT UNIT POWER SUPPLY POWER SUPPLY...
  • Page 38 2) SYSTEMATIC CHART OF “TROUBLESHOOTING” Air conditioner does not operate. When circuit breaker is Measure insulation Circuit breaker trips (or set to ON, it trips in a resistance of power fuse blows). few moments. supply wires. Circuit breaker trips in Check capacity of circuit several minutes after breaker.
  • Page 39 • When circuit breaker is set to ON, it trips in a few moments. (Resetting is not possible). • Measure insulation resistance there is a possibility of ground fault. If resistance value is 1MΩ or less, insulation is defective. ADR518CW - AE518SC Unità Outdoor Unità...
  • Page 40 (b) Circuit breaker trips in several minutes after turning air conditioner ON. • There is a possibility of short circuit. Check capacity of circuit breaker. Replace it with suitable one. Capacity of circuit breaker is suita- (larger capacity). ble? Measure resistance of compressor motor winding.
  • Page 41 (d) Check fuse on PCB Ass’y in indoor unit Check fuse on PCB Ass’y in indoor unit for continuity. (F) If fuse blows, there is a possibility of short circuit. Measure resistance of pri- mary winding of transfor- mer. (TR) Measure coil resistance of power relay or magnetic contactor in out- Measure resistance of indoor...
  • Page 42 • Check power relay in outdoor unit (only for AE518SC) • Check coil resistance of power relay. • PCB Ass’y defective. • Check negative phase relay (only for AE518SC/SCL3-AER/AE518SH3) • Check negative phase relay to see if it has operated. (47C) •...
  • Page 43 b) Three - phase systems 400V - 3N - 50 Hz • Measure resistance of compres- sor motor winding. Is temperature of compressor abnormally high? Is outdoor heat exchanger coil dirty or are there obstacles near air suc- Refrigerant gas shortage. tion inlet? Clean heat exchanger or remove Charge refrigerant gas.

  • Page 44: Lsame Parts Of Air Conditioner Do Not Operate

    SOME PARTS OF AIR CONDITIONER DO NOT OPERATE ONLY INDOOR FAN DOES NOT RUN Check fan casing for Remove foreign foreign matter on inside. matter or repair. Fan cannot Check fan rotation. Turn fan gently be turned once or twice by hand. Fan motor burnout or Repair or repla- foreign matter in bea-...

  • Page 45: Mair Conditioner Operates,But Abnormalities Occur

    AIR CONDITIONER OPERATES, BUT ABNORMALITIES OCCUR Check installation position of remo- POOR COOLING Change installation position of te control unit. remote control unit. Does cool air from air conditioner reach position directly? Is cooling load too large? Review cooling load estimate. Refrigerant flow failure Temperature diffe-...

  • Page 46: Troubleshooting Heating Model

    TROUBLESHOOTING (HEATING MODEL) 1) CHECK BEFORE AND AFTER “TROUBLESHOOTING” a) Check power supply wiring. • WARNING: If the following troubleshooting must be done with power being supplied, be careful about any uninsulated live part that can cause ELECTRIC SHOCK. • Check that power supply wires are correctly connected to terminals: Single-phase system –No.
  • Page 47 (c) Check power supply • Check that voltage is in specified range (± 10% of the rating). • Check that power is being supplied Single-phase systems Three-phase systems 400V 400V 220V 400V 230 V (d) Check lead wires and connectors in indoor and outdoor units. •...
  • Page 48 2) SYSTEMATIC CHART OF “TROUBLESHOOTING” Air conditioner does not operate. When circuit breaker is Measure insulation Circuit breaker trips (or set to ON, it trips in a resistance of power fuse blows). few moments. supply wires. Circuit breaker trips in Check capacity of circuit several minutes after breaker.
  • Page 49 Outdoor Indoor Unità Unità unit unit esterna esterna Power Circuit supply breaker Ground Inter-unit control wiring Inter-unit ADR518CW - AE/AER518SH3 power wiring Unità Indoor Outdoor esterna unit unit Ground Unit Power Inter-unit Circuit supply control wiring breaker Unità...
  • Page 50 • Set circuit breaker to OFF. Remove power supply wires from terminal plate in outdoor Do rewiring unit. • Measure insulation resistance of power supply wires. Remove inter-unit wires from Measure insulation Insulation of outdoor terminal plate in outdoor unit. resistance of electrical parts unit is defective.
  • Page 51 (b) Circuit breaker trips in several minutes after turning air conditioner ON. • There is a possibility of short circuit. Check capacity of circuit breaker. Replace it with suitable one. Capacity of circuit breaker is (larger capacity). suitable? case Heating Measure resistance of outdoor fan operation: motor winding.
  • Page 52 (d) Check fuse on PCB Ass’y in indoor unit Check fuse on PCB Ass’y in indoor unit for continuity. If fuse blows, there is a possibility of short circuit. Measure resistance of primary winding transformer. Measure coil resistance of power relay or magnetic contactor in Measure resistance of outdoor unit.
  • Page 53 SOME PARTS OF AIR CONDITIONER DO NOT OPERATE ONLY INDOOR FAN DOES NOT RUN Check fan casing for Remove foreign foreign matter on inside. matter or repair. Fan cannot Check fan rotation. Turn fan gently be turned once or twice by hand. Fan motor burnout or Repair or repla- foreign...
  • Page 54 ONLY COMPRESSOR DOES NOT RUN Single phase systems 230V - 1 - 50 Hz Measure resistance of compressor motor winding. Check compressor motor capacitor. (Either C1 or BC). Contact power utility company to Check power supply voltage. have power voltage restored to Voltage is abnormally low.
  • Page 55 b) Three-phase systems 400V - 3N - 50 Hz Check negative phase relay (47C) Rewire power supply wires. to see if it has operated. Check magnetic contactor. (MG) O.K. Check thermal relay (51C) to see if it has operated. Contact power utility company to Check power supply voltage.

  • Page 56: Pair Conditioner Operates,But Abnormalities Occur

    AIR CONDITIONER OPERATES, BUT ABNORMALITIES OCCUR POOR COOLING OR Check installation position of POOR HEATING Change installation position of remote control unit. remote control unit. Does cool or heat air from air conditioner reach position directly? Is heating or cooling load too Review heating or cooling load large? estimate.

  • Page 57: Qis Sensor Is Defective

    IF A SENSOR IS DEFECTIVE Indoor coil temp. thermistor (TH) is defective. Open When thermistor opens, the air conditioner will be in the following conditions as the controller tries to detect extremely low indoor coil temperature. IN COOLING MODE - Function of freeze prevention continues to work. That is the controller turns both compressor and outdoor fan motor periodically ON and OFF for several minutes.

  • Page 58: Checking Electrical

    CHECKING ELECTRICAL COMPONENTS 1) Measurement of Insulation Resistance • The insuration is in good condition if the resistance exceeds 1 MΩ. (a) Power Supply Wires Clamp the earthed wire of the power supply wires with the lead clip of the insulation resistance tester and measure the resistance by placing a probe on either of the power wires (Fig.
  • Page 59 2) Checking Continuity of Fuse on PCB Ass’y • Remove PCB Ass’y from electrical component box. Then pull out the fuse from PCB Ass’y (Fig. 5). • Check continuity of fuse by the multimeter (Fig. 6). 3) Checking Motor Capacitor Remove the lead wiers from the capacitor termi- nals, and then place a probe on the capacitor ter- minals as shown in Fig.
  • Page 60 Via Varese, 90 - 21013 Gallarate - Va - Italy Tel. +39 0331 755111 - Fax +39 0331 776240 www.argoclima.it...

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