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Technibel Climatisation MCA72R5TA Technical Data & Service Manual

Split system air conditioner
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TECHNICAL DATA
& SERVICE MANUAL
INDOOR UNIT: MCA72R5TA-
SPLIT SYSTEM AIR CONDITIONER
Model No.
MCA72R5TA-
MCA92R5TA-
MCA122R5TA-
MCA92R5TA-
MCA122R5TA-
Product Code No.
387104003
387104004
387104005
0.8180.258.0
MCAV72R5TA-
MCAV92R5TA-
MCAV122R5TA-
05/2002

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Summary of Contents for Technibel Climatisation MCA72R5TA

  • Page 1 TECHNICAL DATA & SERVICE MANUAL INDOOR UNIT: MCA72R5TA- MCAV72R5TA- MCA92R5TA- MCAV92R5TA- MCA122R5TA- MCAV122R5TA- SPLIT SYSTEM AIR CONDITIONER Model No. Product Code No. MCA72R5TA- 387104003 MCA92R5TA- 387104004 MCA122R5TA- 387104005 0.8180.258.0 05/2002...
  • Page 2 • Ground the unit following local electrical codes. IMPORTANT! • The Yellow/Green wire cannot be used for any connection Please read before installation different from the ground connection. • Connect all wiring tightly. Loose wiring may cause overheating This air conditioning system meets strict safety and operating at connection points and a possible fire hazard.

  • Page 3: Table Of Contents

    Table of Contents Page 1. SPECIFICATIONS 1-1 Unit specifications 1-2 Major Component specifications 1-3 Other Component specifications 2. DIMENSIONAL DATA 3. PERFORMANCE DATA 3-1 Air Throw Distance Chart 4. ELECTRICAL DATA 4-1 Electric Wiring Diagrams 5. FUNCTION 5-1 Room Temperature Control 5-2 Dry Operation (Dehumidification) 5-3 Automatic Switching between Cooling and Heating 5-4 Freeze Prevention (Cooling and Dry)

  • Page 4: Specifications

    1. SPECIFICATIONS 1-1 Unit Specifications MCA72R5TA- MCAV72R5TA- 220 - 240V ~ 50Hz Power source 230V Voltage rating Cooling Heating Performance See catalogue with the requested matching Capacity Air circulation (High) m³/h Features Microprocessor/ I.C. thermostat Controls/Temperature controls Control unit Wireless remote control unit Timer ON/OFF 24 hours &...
  • Page 5 MCA92R5TA- MCAV92R5TA- 220 - 240V ~ 50Hz Power source 230V Voltage rating Cooling Heating Performance See catalogue with the requested matching Capacity Air circulation (High) m³/h Features Microprocessor/ I.C. thermostat Controls/Temperature controls Control unit Wireless remote control unit Timer ON/OFF 24 hours & Daily program, 1-hour OFF 3 and Auto /1(Hi) Fan speed Manual...
  • Page 6 MCA122R5TA- MCAV122R5TA- 220 - 240V ~ 50Hz Power source 230V Voltage rating Cooling Heating Performance See catalogue with the requested matching Capacity Air circulation (High) m³/h Features Microprocessor/ I.C. thermostat Controls/Temperature controls Control unit Wireless remote control unit Timer ON/OFF 24 hours & Daily program, 1-hour OFF 3 and Auto /1(Hi) Fan speed Manual...

  • Page 7: Major Component Specifications

    1-2 Major Component Specifications MCA72R5TA- Controller PCB POW-K79NEH(A), POW-K99EH(B) Part No. Controls Microprocessor Control circuit fuse 250 V - 3,15 A RCS-9HPS4E-G Remote Control Unit Fan & Fan Motor Coss - flow Type 1…. Ø 95 / L 617 Q'ty ……. Dia. and lenght KFV4-21G5P-S…1...
  • Page 8 MCAV72R5TA- Controller PCB POW-K79EH(A), POW-K99EH(B) Part No. Controls Microprocessor Control circuit fuse 250 V - 3,15 A RCS-9HPS4E-G Remote Control Unit Fan & Fan Motor Coss - flow Type 1…. Ø 95 / L 617 Q'ty ……. Dia. and lenght KFV4-21G5P-S…1 Fan motor model…Q'ty 4…1.
  • Page 9 MCA92R5TA- Controller PCB POW-K99NEH(A), POW-K99EH(B) Part No. Controls Microprocessor Control circuit fuse 250 V - 3,15 A RCS-9HPS4E-G Remote Control Unit Fan & Fan Motor Coss - flow Type 1…. Ø 95 / L 617 Q'ty ……. Dia. and lenght KFV4-21G5P-S…1 Fan motor model…Q'ty 4…1.
  • Page 10 MCAV92R5TA- Controller PCB POW-K99EH(A), POW-K99EH(B) Part No. Controls Microprocessor Control circuit fuse 250 V - 3,15 A RCS-9HPS4E-G Remote Control Unit Fan & Fan Motor Coss - flow Type 1…. Ø 95 / L 617 Q'ty ……. Dia. and lenght KFV4-21G5P-S…1 Fan motor model…Q'ty 4…1.
  • Page 11 MCA122R5TA- Controller PCB POW-K129NEH(A), POW-K99EH(B) Part No. Controls Microprocessor Control circuit fuse 250 V - 3,15 A RCS-9HPS4E-G Remote Control Unit Fan & Fan Motor Coss - flow Type 1…. Ø 95 / L 617 Q'ty ……. Dia. and lenght KFV4-21G5P-S…1 Fan motor model…Q'ty 4…1, 235-1.270...
  • Page 12 MCAV122R5TA- Controller PCB POW-K129EH(A), POW-K99EH(B) Part No. Controls Microprocessor Control circuit fuse 250 V - 3,15 A RCS-9HPS4E-G Remote Control Unit Fan & Fan Motor Coss - flow Type 1…. Ø 95 / L 617 Q'ty ……. Dia. and lenght KFV4-21G5P-S…1 Fan motor model…Q'ty 4…1, 235-1.270...

  • Page 13: Other Component Specifications

    1-3 Other Component Specifications MCA72R5TA- MCAV72R5TA- MCA92R5TA- MCAV92R5TA- MCA122R5TA- MCAV122R5TA- ATR-I55 Trasformer (TR) AC 230 V, 50/60 Hz Rating Primary 13.7 V - 0.4 A Secondary 5.48 VA Capacity Primary (WHT-WHT): 307 ± 10% Coil resistance Ω (at 25°C) Secondary (BRN-BRN): 1.8 ± 10% 150°C...

  • Page 14: Dimensional Data

    2. DIMENSIONAL DATA Drain hose ø18 Remote control unit 19.5 99.5 58.5 Narrow tube ø6.35 (1/4") Center of tubing hole (2 places) Wide tube ø9.52 (3/8") 7000/9000 BTU/h Wide tube ø12.7 (1/2") 12000 BTU/h Unit : mm...

  • Page 15: Performance Data

    3. PERFORMANCE DATA 3-1 Air Throw Distance Chart MCA72R5TA- MCAV72R5TA- Cooling Room air temp. : 27°C Fan speed High Horizontal distance (m) : Flap angle 0° , : Axis air velocity 0° : Flap angle 30°, : Axis air velocity 30°...
  • Page 16 MCA92R5TA- MCAV92R5TA- Cooling Room air temp. : 27°C Fan speed High Horizontal distance (m) : Flap angle 0° , : Axis air velocity 0° : Flap angle 30°, : Axis air velocity 30° Heating Room air temp. : 20°C Fan speed High Horizontal distance (m) : Flap angle 45°...
  • Page 17 MCA122R5TA- MCAV122R5TA- Cooling Room air temp. : 27°C Fan speed High Horizontal distance (m) : Flap angle 0° , : Axis air velocity 0° : Flap angle 30°, : Axis air velocity 30° Heating Room air temp. : 20°C Fan speed High Horizontal distance (m) : Flap angle 45°...

  • Page 18: Electrical Data

    4. ELECTRICAL DATA 4-1 Electric Wiring Diagrams...

  • Page 19: Function

    5. FUNCTION 5-1. Room Temperature Control I Cooling G Room temperature control is obtained by cycling the compressor ON and OFF under control of the room temperature sensor in the remote control unit. G The room temperature (and other information) is transmitted every 5 minutes by the remote control unit to the controller in the indoor unit.
  • Page 20 I Heating G Room temperature control is obtained by cycling the compressor ON and OFF under control of the room temperature sensor in the remote control unit. G The room temperature (and other information) is transmitted every 5 minutes by the remote control unit to the controller in the indoor unit.

  • Page 21: Dry Operation (Dehumidification)

    5-2. Dry Operation (Dehumidification) G Dry operation uses the ability of the cooling cycle to remove moisture from the air, but by running at low level to dehumidify without greatly reducing the room temperature. The air conditioner repeats the cycle of turning ON and OFF automatically as shown in the chart below according to the room temperature.

  • Page 22: Freeze Prevention (Cooling And Dry)

    5-4. Freeze Prevention (Cooling and Dry) G This function prevents freezing of the indoor heat exchange coil. G When the compressor has been running for 6 minutes or more and the temperature of the indoor heat exchange coil falls below 2.4°C, the control circuit stops the compressor for at least 6 minutes. The compressor does not start again until the temperature rises above 8°C or 6 minutes has elapsed.

  • Page 23: Overload Prevention (Heating)

    5-6. Overload Prevention (Heating) G Overload prevention prevents overheating of the indoor heat exchange coil. This function works either when the temperature of indoor heat exchange coil goes up or compressor current rises to a certain level. I Temperature of indoor heat exchange coil sensor G When the temperature of the indoor heat exchange coil rises above A2°C, and if the indoor fan is L (low speed), then the fan speed changes from L (low speed) to M (medium speed).

  • Page 24: Cold Draft Prevention (Heating)

    5-7. Cold Draft Prevention (Heating) G 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. G STANDBY lamp on front of the indoor unit lights up when this function is working. G Indoor fan operates in LL until indoor heat exchange coil temperature reaches 32°C.

  • Page 25: Defrosting Operation (Heating)

    5-8. Defrosting Operation (Heating) I Reverse-cycle Defrosting Defrosting Sequence Heating operation Compressor ON 4-way valve ON Frost detection Frosting is assumed mostly under the following condition. Indoor heat exchanger coil temperature drops 0.8°C per 6 minutes and it repeats 3 times in succession. Integrated operating time of compressor is longer than 3 hours.
  • Page 26 I Defrosting Mode Timing Chart Release of defrosting Start of defrosting 60 seconds Max. 8 to 12 minutes 60 seconds Compressor Outdoor fan 4 or 8 seconds 2 seconds Solenoid coil (4 – way valve) Indoor fan Set speed Set speed Standby lamp Indoor heat exch.

  • Page 27: Troubleshooting

    6. TROUBLESHOOTING 6-1. 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. 6-1-1. Check power supply wiring. G Check that power supply wires are correctly connected to terminals L and N on the terminal plate in the indoor unit.

  • Page 28: Air Conditioner Does Not Operate

    6-2. Air conditioner does not operate. 6-2-1. Circuit breaker trips (or fuse blows). A. When the circuit breaker is set to ON, it is tripped soon. (Resetting is not possible.) G There is a possibility of ground fault. G Check insulation resistance. If resistance value is 2MΩ...
  • Page 29 B. Circuit breaker trips in several minutes after turning the air conditioner on. G There is a possibility of short circuit. • Check capacity of circuit breaker. Replace with suitable one (larger capacity). Capacity of circuit breaker is suitable. In case of Heating operation : Measure resistance of outdoor fan •...
  • Page 30 C. Check remote control unit. • Try to run with another remote control unit. First remote control unit is defective. • Check for residue buildup on Clean transmitter. transmitter of remote control unit. • Check for residue buildup on remote Clean receiver.
  • Page 31 6-2-3. 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 ( button).

  • Page 32: Some Part Of Air Conditioner Does Not Operate

    6-3. Some part of air conditioner does not operate. 6-3-1. 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 33 6-3-4. Only compressor does not run. Overload relay is working. • Check compressor motor (Either OLR T or OLR A) capacitor. (C1) • Measure resistance of Temperature of compressor is abnormally high. compressor motor winding. Refrigerant gas shortage. Charge refrigerant gas (R22). •...

  • Page 34: Air Conditioner Operates, But Abnormalities Are Observed

    6-4. Air conditioner operates, but abnormalities are observed. 6-4-1. Operation does not switch from HEAT to COOL (or COOL to HEAT). • Remote control unit may be defective. Receiver in lamp Ass'y may be defective. • Measure resistance of 4–way valve's winding.
  • Page 35 6-4-2. 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 36: If A Sensor Is Defective

    6-5. If a sensor is defective. 6-5-1. Thermistor (TH1 or TH2) is defective. • Operation lamp on front side of • Indoor coil thermistor (TH1 ) or room indoor unit is flashing on and off. (*) air thermistor (TH2 ) is defective. •...

  • Page 37: Checking Electrical Components

    7. CHECKING ELECTRICAL COMPONENTS 7-1. Measurement of Insulation power plug (Local supply) Resistance G The insulation is in good condition if the resistance Ground exceeds 2MΩ. probe 7-1-1. Power Supply Wires Insulation tester Clamp the grounding terminal of the power plug with a NOTE lead clip of the insulation resistance tester and The shape of the power plug may differ from that...

  • Page 38: Checking Continuity Of Fuse On Pcb Ass'y

    7-2. Checking Continuity of Fuse Fuse on PCB Ass'y G Remove the PCB Ass’y from the electrical component box. Then pull out the fuse from the PCB Ass’y. (Fig. 5) PCB Ass’y G Check for continuity using a multimeter as shown in Fig.

  • Page 39: Maintenance

    8. MAINTENANCE 8-1. Changing Address of Remote Control Unit in Indoor Unit If you are installing more than 1 indoor unit (up to 2) in the same room, it is necessary for you to assign each unit its own address, so each can be operated by its own separate remote control unit. You assign the addresses by matching the remocon address on the PCB of each indoor unit with the switch positions of its remote control unit.
  • Page 40 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...

This manual is also suitable for:

Mca92r5taMca122r5ta387104003387104004387104005

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