Technibel GR360M4R5TAA Technical Data & Service Manual
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Technibel GR360M4R5TAA Technical Data & Service Manual

Multi-split system air conditioner
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TECHNICAL DATA & SERVICE MANUAL
Outdoor Unit
Indoor Unit
GR360M4R5TAA
MCA90MR5TAA (x4)
MULTI-SPLIT SYSTEM AIR CONDITIONER
MCA90MR5TAA
GR360M4R5TAA
0.8180.212.4
06/2002

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Summary of Contents for Technibel GR360M4R5TAA

  • Page 1 TECHNICAL DATA & SERVICE MANUAL Outdoor Unit Indoor Unit GR360M4R5TAA MCA90MR5TAA (x4) MULTI-SPLIT SYSTEM AIR CONDITIONER MCA90MR5TAA GR360M4R5TAA 0.8180.212.4 06/2002...
  • Page 2 Important! When Transporting Be careful when picking up and moving the indoor and Please Read Before Starting outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp This air conditioning system meets strict safety and edges or thin aluminum fins on the air conditioner can operating standards.

  • Page 3: Table Of Contents

    Table of Contents Page Unit combination OPERATING RANGE SPECIFICATIONS Unit Specification Major Component Specifications Other Component Specifications DIMENSIONAL DATA COOLING CAPACITY HEATING CAPACITY AIR THROW DISTANCE CHART REFRIGERANT FLOW DIAGRAM ELECTRICAL DATA Electrical Characteristic Electric Wiring Diagrams FUNCTION 9-1 Cool Mode Operation 9-2 Heat Mode Operation 9-3 Dry mode operation 9-4 Fan Operation...

  • Page 4: Unit Combination

    Unit Combination Combine indoor and outdoor units only as listed below. Symbol of Outdoor Unit Indoor Unit Refer to SYSTEM Indoor Unit MCA90MR5 MCA90MR5 Fig.1 AE036QH MCA90MR5 MCA90MR5 Fig.1...

  • Page 5: Operating Range

    1. OPERATING RANGE Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp. Maximum 32°C DB / 23°C WB 46°C DB Cooling Minimum 19°C DB / 14°C WB 19°C DB Maximum 27°C DB 24°C DB / 18°C WB Heating Minimum – 5°C DB / – 6°C WB...

  • Page 6: Specifications

    2. SPECIFICATIONS 2-1. Unit Specifications Indoor Unit MCA90MR5TAA Outdoor Unit GR360M4R5TAA No. of indoor units. 1 indoor unit (A1 or A2, B1 or B2) Power Source 220 – 240 V ~ 50 Hz Cooling Heating 2.55 3.05 Capacity BTU/h 8,700...
  • Page 7 Indoor Unit MCA90MR5TAA Outdoor Unit GR360M4R5TAA No. of indoor units. 1 SYSTEM (A or B) Power Source 220 – 240 V ~ 50 Hz Cooling Heating Capacity BTU/h 19,300 19,800 Air circulation (High) Moisture removal (High) Liters/h — Voltage rating...
  • Page 8 Indoor Unit MCA90MR5TAA Outdoor Unit GR360M4R5TAA No. of indoor units. 2 SYSTEMS (A + B) Power Source 220 – 240 V ~ 50 Hz Cooling Heating 11.2 11.6 Capacity BTU/h 38,300 39,600 Air circulation (High) Moisture removal (High) Liters/h —...

  • Page 9: Major Component Specifications

    2-2. Major Component Specifications Indoor Unit MCA90MR5TAA Part No. WSA –LTR Controls Microprocessor Control circuit fuse 250 V – 3.15 A Remote Control Unit RC–2(WOA) Type Cross–flow Number ... Dia. and length 1 ... ø95 / L617 Fan motor model ... Number KFV4Q–11H5P -S...
  • Page 10 Unit GR360M4R5TAA Controller PCB MSC1V1 (40V1-D) Control circuit fuse 250 V– 3.15 A Type Rotary (Hermetic) Compressor model ... Number PH36VTRT ... 2 Nominal output 1600 x 2 Compressor oil ... Amount DIAMOND MS32(N-1) ... 900 x 2 Ω...

  • Page 11: Other Component Specifications

    25°C 10 ± 5% Thermistor (Room sensor ) NTC - SENSOR Resistance kΩ 25°C 10 ± 5% Outdoor Unit GR360M4R5TAA Power Relay (PRa, PRb) DFU24D1-F (M) Coil rating DC 24V Ω (at 20°C) Coil resistance 650 ± 10% Contact rating...

  • Page 12: Dimensional Data

    3. DIMENSIONAL DATA Indoor Unit MCA90MR5TAA Drain hose ø18 Remote control unit 18.5 99.5 58.5 Center of tubing Narrow tube ø6.35 (1/4") hole (2 places) Wide tube ø9.52 (3/8") Unit : mm...
  • Page 13 Outdoor Unit GR360M4R5TAA...

  • Page 14: Cooling Capacity

    4. COOLING CAPACITY (System A or B) Indoor Unit MCA90MR5TAA Outdoor Unit GR360M4R5TAA 230V 50 Hz RATING CAPACITY 5,6 kW AIR FLOW RATE 470 x 2 m³/h EVAPORATOR CONDENSER ENT.TEMP. °C OUTDOOR AMBIENT TEMP. °C W.B. D.B. 5,31 5,15 4,91...

  • Page 15: Heating Capacity

    5. HEATING CAPACITY (System A, B or A+B) Indoor Unit MCA90MR5TAA Outdoor Unit GR360M4R5TAA Outdoor temperature (°C DB) NOTE … Point of Rating condition Black dot in the chart indicate the following rating condition. Indoor : 20°C DB Outdoor : 7°C DB / 6°C WB 2) Above characteristics take into consideration defrost operation.

  • Page 16: Air Throw Distance Chart

    6. AIR THROW DISTANCE CHART Indoor Unit MCA90MR5TAA Cooling Room air temp. : 27°C Fan speed High Horizontal distance (m) Axis air velocity 0° Flap angle 30° Heating Room air temp. : 20°C Fan speed High Horizontal distance (m) Axis air velocity 45°...

  • Page 17: Refrigerant Flow Diagram

    7. REFRIGERANT FLOW DIAGRAM Indoor Unit MCA90MR5TAA CIRCUIT A Outdoor Unit GR360M4R5TAA Narrow tube service valve Wide tube service valve...
  • Page 18 Indoor Unit MCA90MR5TAA CIRCUIT B Outdoor Unit GR360M4R5TAA Narrow tube service valve Wide tube service valve...

  • Page 19: Electrical Data

    NOTE The values in the table below indicate the sum of indoor units which are in running condition. Indoor Unit MCA90MR5TAA Outdoor Unit GR360M4R5TAA Cooling 230V Single phase 50 Hz 1 System 2 Systems Number of indoor unit (A1+A2 or B1+B2) (A + B) Running amp.

  • Page 20: Electric Wiring Diagrams

    8-2. Electric Wiring Diagrams Indoor Unit MCA90MR5TAAA Outdoor Unit GR360M4R5TAA...

  • Page 21: Function

    9. FUNCTION 9-1 Cool Mode Operation (RT - SPT) [ over 3 min over 5 min COMP OFAN over 30 sec IFAN In Cool Mode, the operation of the Compressor (COMP), Outdoor Fan (OFAN) and Indoor Fan (IFAN) are determined by the difference between the Room Temperature (RT) and the Set Point Temperature (SPT) as in the graph above.

  • Page 22: Heat Mode Operation

    9-2 Heat Mode Operation (RT - SPT) [ COMP 30 sec IFAN Note 1 Note 2 The Heat Mode operation is similar to the Cool Mode operation. The COMP, OFAN and IFAN are mainly controlled by the value of (RT – SPT). In the graph above, the IFAN is operating in Auto Fan speed mode. Therefore, the IFAN speed changes automatically according to the (RT - SPT).

  • Page 23: Dry Mode Operation

    9-3 Dry Mode Operation (RT - SPT) [ Time [min] DRY-ON DRY-OFF IFAN 5 minutes COMP ON time COMP & OFAN 3.5 min Max 15 minutes Max 15 minutes 6 min (Note 2) (Note 1) In Dry Mode, the unit operates in a mild cool mode to lower the humidity of the room. In order to maintain a high efficiency in the drying operation without over lowering the room temperature excessively, the Dry Mode is different from the Cool Mode in two ways.

  • Page 24: Fan Operation

    9-4 Fan Operation 1. Indoor unit In Fan Mode the indoor fan is turned on to improve the air circulation in the room. Compressor and outdoor fan remain OFF all the time. Note: if the user has selected the Auto Fan Speed setting, the indoor fan speed would be selected by the unit automatically according to the difference between RT and SPT, as in Cool Mode.

  • Page 25: Protection Operations In Cool And Dry Mode

    9-5 Protection Operations in Cool and Dry Modes 1. Indoor Coil Defrost Protection The in-coil defrost protection can prevent the ice formation at the in-coil when the ambient temperature is low. ICT [ OFAN COMP IFAN t1 = 5 min minimum for each COMP starting t2 = OFAN cycling (alternate between ON and OFF every 30 sec) for 20 min maximum t3 = COMP and OFAN stop for 10 min minimum...
  • Page 26 2. Outdoor coil High Pressure Protection The outdoor coil High Pressure protection prevents the rising of pressure in the outdoor coil during cool mode operation Protection INPUTS (from indoor units) OUTPUTS Condition A OCT-A ORV-A CO-A OF-A SV-A1 SV-A2 SV-A3 Condition B (RV3) (RV4)

  • Page 27: Protection Operation In Heat Mode

    9-6 Protection Operations In Heat Mode 1. Outdoor coil De-ice Protection Protection INPUTS OUTPUTS Condition A OCT-A ORV-A CO-A OF-A SV-A1 SV-A2 SV-A3 (Condition B) (RV3) (RV4) (CO3) (CO4) (OCT-B) (ORV-B) (CO-B) (OF-B) (SV-B1) (SV-B2) (SV-B3) = -2 = -2 De-icing = -2 = -2...
  • Page 28 2. Outdoor Coil High Pressure Protection in Heat Mode The outdoor coil high pressure protection prevent the rising of pressure in the circuit during heating operation at high evaporating temperatures.
  • Page 29 3. Indoor Coil High Pressure Protection in Heat Mode The in-coil high pressure protection prevent the build up of high pressure at the in-coil during heating operation. ICT [ COMP COMP is forced OFF OFAN Note: The operation temperatures shown as A and B in the chart differ by models. MCA90MR5...

  • Page 30: Cool Draft Prevention (Heating)

    9-7 Cold Draft Prevention (Heating) • This function controls indoor fan speed so a strong draft of cold air will not blow out before the indoor heat exchange coil have sufficiently warmed up. • When 10 minutes has elapsed, the fan speed is automatically switched to set speed regardless of indoor heat exchange coil temperature.

  • Page 31: Others Features

    9-8.1 Sleep Function Room temperature is automatically controlled to compensate for body temperature variations while sleeping. This mode of operation is designed for maximal comfort in both COOL and HEAT modes. Unit is turned to SB 7-12 Hours Sleep operation after Sleep SPT+3 Cool, Dry modes...
  • Page 32 9-8.5 Manual Unit Control and LED indicators 1. Indoor Unit PCB The push button switch and the LED indicators on the display panel let the user to control the unit operation without a remote controller. Their operations are provided below. 1.
  • Page 33 9-8.6. Fault Operations and Indications (Outdoor Unit PCB) The MCU of the MSC system will monitor all input continuously. Then update the status of the inputs every second. To prevent temporary input error from interfering with normal operation, the MCU will not take immediately action when an error is detected.
  • Page 34 3. Self Test Self test is initiated by connecting J1 jumper and 3 fixed resistors of 10k 1/4W, 5% or thermistors at OCT1, OCT3 and OAT satisfying conditions in note1, then H/W reset the unit. The J1 must be connected throughout the test operations. Otherwise, the system will go back to normal operation mode.
  • Page 35 4. Error Code Message Display of Error Code: Indicated by the Status LED (Red color), a flash pattern consists of 1 to 6 flashes with 0.5sec separation, which is corresponding to the error code 1 to 6. The flash pattern is repeated continuously with 2sec separation.
  • Page 36 5.2 Quick Test jumper – J2 (Assembly test) The jumper J2 is used to speed up the operation mode by 60. Operation Mode J2 setting Quick Test Closed Normal Operation Open 9-8.7 Recovery from Power Failure (Indoor Unit PCB) Last unit settings (SPT, operation mode, louver settings, etc) are saved in the EEPROM in the unit. In case of power failure, these settings are restored automatically.

  • Page 37: Troubleshooting

    10. TROUBLESHOOTING 10-1. Check before and after troubleshooting. WARNING Hazardous voltage can cause ELECTRIC SHOCK or DEATH. Disconnect power or turn off circuit breaker before you start checking or servicing. 10-1-1. Check power supply wiring. Check that power supply wires are correctly connected to terminals No. 1 and No. 2 on the 3P terminal plate in the outdoor unit.

  • Page 38: Air Conditioner Does Not Operate

    10-2. Air conditioner does not operate. 10-2-1. Circuit breaker trips (or fuse blows). A. When the circuit breaker is set to ON, it is tripped soon. (Resetting is not possible.) There is a possibility of ground fault. Check insulation resistance. If resistance value is 1MΩ...
  • Page 39 10 -2-2.Neither indoor nor outdoor unit runs. A. Power is not supplied. Circuit breaker Reset breaker. is tripped. • Check power supply. Power is being supplied to the Wait for recovery outdoor unit. Power failure or contact power company. B. Check remote control unit. •...
  • Page 40 C. Check fuse on the indoor PCB Ass'y. • Measure resistance of indoor fan If fuse has been blown, • Check fuse on indoor PCB Ass'y motor winding. for continuity. (FMI) • Check operation lamp to see • Measure resistance of flap motor if light is ON.
  • Page 41 10-2-3.Only outdoor unit does not run. A. Check setting temperature. COOL HEAT Is room temperature too low ? Is room temperature too high ? Try to lower setting temperature by Try to raise setting temperature by temperature setting button cooler. temperature setting button warmer.

  • Page 42: Some Part Of Air Conditioner Does Not Operate

    10 -3. Some part of air conditioner does not operate. 10-3-1.Only indoor fan does not run. • Check fan casing Remove foreign foreign matter on matter or repair. Fan cannot inside. be turned. • Check fan rotation. Turn fan gently once or twice by hand.
  • Page 43 10-3-4.Only compressor does not run. Check compressor motor • Overload relay is working. Measure coil resistance of capacitor. power relay. (PRa,PRb) (C3a,C3b) (OLR) Measure resistance of • Temperature of compressor is compressor motor winding. abnormally high. Refrigerant gas shortage. Charge refrigerant gas (R22). Rotor may be locked up.

  • Page 44: Air Conditioner Operates, But Abnormalities Are Observed

    10 -4. Air conditioner operates, but abnormalities are observed. 12-4-1.Operation does not switch from HEAT to COOL (or COOL to HEAT). • Remote control unit may be defective. Receiver in switch Ass'y may be defective. • Measure resistance of 4–way valve's winding.
  • Page 45 10-4-2.Poor cooling or heating. • Check position of remote control unit. Change position of remote • Cool or warm air from air conditioner control unit. reaches position directly. • Wide and narrow tubes between Insulate both wide and narrow indoor unit and outdoor unit are tubes separately and then insulated.

  • Page 46: If A Sensor Is Defective

    10-5. If a sensor is defective. 10-5-1.Indoor coil / room temperature thermistor is defective. • Stand-by lamp on front side of • At least one of the thermistors is indoor unit is flashing on and off. defective (that is, SHORT or OPEN.) •...

  • Page 47: Arrangement Of Electrical Components

    11.ARRANGEMENT OF ELECTRICAL COMPONENTS Outdoor Unit GR360M4R5TAA Terminal Plate Electric Parts...
  • Page 48 Outdoor Unit GR360M4R5TAA Electronic Control Board Parts Layout in Unit...

  • Page 49: Special Precautions When Servicing The Unit

    12. SPECIAL PRECAUTIONS WHEN SERVICING THE UNIT IMPORTANT! For your personal safety, be sure to read and understand the following precautions before servicing. WARNING Injuries can occur from burns or inhalation of toxic gas if servicing is performed while refrigerant remains in the refrigeration circuit. This servicing includes disassembling brazed tubing connections and removing any refrigeration parts or components.

  • Page 50: Refrigerant Recovery

    12-2. Refrigerant recovery 12-2-1. Open the service valve to recover refrigerant into refrigerant recovery unit. IMPORTANT! CAUTION This procedure requires solenoid valves opening during the operation. Follow the Refrigerant released into the air contributes to steps of 12.1 before starting. destruction of our planet's ozone layer.

  • Page 51: Refrigerant Charging

    12-4-3. Install (first by hand-tightening, then securely with a wrench) flare nuts and bonnets at all service valves in the refrigeration circuit where evacuation will take place. This process is highly important to completely evacuate the system. 12-4-4. With the " Lo " and "Hi" knobs of the manifold valve open run the vacuum pump.

  • Page 52: Reset The Unit For Normal Operation

    12-5-4. With a hex wrench, open the service valve little by little to let refrigerant enter the circuit. (Figs.12-4 ) NOTE Write down the gradation levels on the charging cylinder before and after the charging. This allows you to calculate the charging volume. Gradation Gradation Charging...
  • Page 53 Service Valve Construction Wide Tube Narrow Tube Valve Position -a- Valve cap O-ring The valve stems of both the wide and narrow tubes Stem are turned all the way in. The unit is shipped from the factory in this position. (Fig.12-7a) Valve Position -b- The valve stems of both the wide and narrow tubes are turned all the way out ("BACK SEAT"...

  • Page 54: Checking Electrical Components

    13. CHECKING ELECTRICAL COMPONENTS 13-1. Measurement of Insulation Ground wire Resistance Clip The insulation is in good condition if the resistance exceeds 2MΩ. Probe 13-1-1. Power Supply Wires Insulation Fig. 1 tester Clamp the ground wire of the power supply wires with the lead clip of the insulation resistance tester and mea- Terminal plate sure the resistance by placing a probe on either of the...

  • Page 55: Checking Continuity Of Fuse On Pcb Ass'y

    13-2. Checking continuity of Fuse on PCB Ass'y Fuse Check for continuity using a multimeter as shown in Fig. 6. Indoor NOTE PCB Ass’y Method Used to Replace Fuse on PCB Ass'y Fig. 5a — Indoor PCB Ass'y — 1. Remove the PCB Ass'y from the electrical compo Soldering iron nent box 2.
  • Page 56 R.D. 28 Reyrieux BP 131 - 01601 Trévoux CEDEX France Tél. 04.74.00.92.92 - Fax 04.74.00.42.00 R.C.S. Bourg-en-Bresse B 759 200 728...

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