Technibel MCAV77C5TA Series Technical & Service Manual

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MCAV77C5TA* - GR79C5TA*

MCAV97C5TA* - GR99C5TA*

MCAV127C5TA* - GR129C5TA*

63/,7 6<67(0 $,5 &21',7,21(5

0.8180.046.0

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Summary of Contents for Technibel MCAV77C5TA Series

Page 1 7(&+1,&$/ 6(59,&( 0$18$/ MCAV77C5TA* - GR79C5TA* MCAV97C5TA* - GR99C5TA* MCAV127C5TA* - GR129C5TA* 63/,7 6<67(0 $,5 &21',7,21(5 0.8180.046.0 10/99...
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 Page 1. OPERATING RANGE ..........................1 2. SPECIFICATIONS 2-1. Unit Specifications .......................... 2 2-2. Major Component Specifications....................5 2-3. Other Component Specifications....................11 3. DIMENSIONAL DATA..........................12 4. REFRIGERANT FLOW DIAGRAM ......................14 5. PERFORMANCE DATA 5-1. Performance charts ........................16 5-2.
Page 4 1. OPERATING RANGE Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp. Maximum 32°C D.B. / 23°C W.B. 43°C D.B. Cooling Minimum 19°C D.B. / 14°C W.B. 19°C D.B.
Page 5 2. SPECIFICATIONS 2-1. Unit Specifications Indoor Unit MCAV77C5TA* Outdoor Unit GR79C5TA* Power Source 220–240V ~ 50Hz Voltage rating 230 V Performance Cooling Capacity 2.05 BTU/h 6,991 Air circulation (High) Moisture removal (High) Liters/h Electrical Rating Cooling Available voltage range 198 ~ 264 Running amperes Power input Power factor...
Page 6 Indoor Unit MCAV97C5TA* Outdoor Unit GR99C5TA* Power Source 220–240V ~ 50Hz Voltage rating 230 V Performance Cooling Capacity 2.65 BTU/h 9,037 Air circulation (High) Moisture removal (High) Liters/h Electrical Rating Cooling Available voltage range 198 ~ 264 Running amperes Power input Power factor C.O.P.
Page 7 Indoor Unit MCAV127C5TA* Outdoor Unit GR129C5TA* Power Source 220–240V ~ 50Hz Voltage rating 230 V Performance Cooling Capacity 3.50 BTU/h 11,935 Air circulation (High) Moisture removal (High) Liters/h Electrical Rating Cooling Available voltage range 198 ~ 264 Running amperes Power input 1,270 Power factor C.O.P.
Page 8 2-2. Major Component Specifications 2-2-1. Indoor Unit Indoor Unit MCAV77C5TA* Controller Part No. POW-K8E(A), POW-K8E(B) Controls Microprocessor Control circuit fuse 250 V 3.15 A Remote Control Unit RCS-8PS3E Fan & Fan Motor Type Cross-flow Q'ty ... Dia. and length 1 ... ø95 / L617 Fan motor model ...
Page 9 Indoor Unit MCAV97C5TA* Controller Part No. POW-K8E(A), POW-K8E(B) Controls Microprocessor Control circuit fuse 250 V 3.15 A Remote Control Unit RCS-8PS3E Fan & Fan Motor Type Cross-flow Q'ty ... Dia. and length 1 ... ø95 / L617 Fan motor model ... Q'ty KFV4Q-11H5P-S ...
Page 10 Indoor Unit MCAV127C5TA* Controller Part No. POW-K8E(A), POW-K8E(B) Controls Microprocessor Control circuit fuse 250 V 3.15 A Remote Control Unit RCS-8PS3E Fan & Fan Motor Type Cross-flow Q'ty ... Dia. and length 1 ... ø95 / L617 Fan motor model ... Q'ty KFV4Q-11H5P-S ...
Page 11 2-2-2. Outdoor Unit Outdoor Unit GR79C5TA* Compressor Type Rotary (Hermetic) Compressor model C-1R60H5T 80662745-S Nominal output Compressor oil ... Amount SUNISO 4GSD-T ... 370 Ω Coil resistance (Ambient temp. 25°C) C–R : 4.66 C–S : 8.89 Safety devices Type External(OLR A) External(OLR T) Overload relay MRA99059-9201...
Page 12 Outdoor Unit GR99C5TA* Compressor Type Rotary (Hermetic) Compressor model C-R81H5T 80683545-S Nominal output Compressor oil ... Amount SUNISO 4GSD-T ... 500 Ω Coil resistance (Ambient temp. 25°C) C–R : 3.38 C–S : 7.49 Safety devices Type External(OLR A) External(OLR T) Overload relay MRA99109-9201 CS-7C115...
Page 13 Outdoor Unit GR129C5TA* Compressor Type Rotary (Hermetic) Compressor model C-R110H5H 80619445-S Nominal output 1,100 Compressor oil ... Amount SUNISO 4GSD-T ... 550 Ω Coil resistance (Ambient temp. 25°C) C–R : 1.962 C–S : 5.38 Safety devices Type External(OLR A) External(OLR T) Overload relay MRA99109-9201 CS-7C115...
Page 14 2-3. Other Component Specifications Indoor Unit MCAV77C5TA* MCAV97C5TA* MCAV127C5TA* Transformer (TR) ATR-J105 Rating Primary AC 230V, 50 / 60 Hz Secondary 19V, 0.526A Capacity 10VA Ω (at 21°C) Coil resistance Primary (WHT – WHT): 205 ± 10% Secondary (BRN – BRN): 2.0 ±...
Page 15 3. DIMENSIONAL DATA Indoor Unit MCAV77C5TA* MCAV97C5TA* MCAV127C5TA* Drain hose ø18 Remote control unit 18.5 99.5 58.5 Narrow tube ø6.35 (1/4") Center of tubing hole (2 places) Wide tube ø9.52 (3/8") MCAV77/97 Wide tube ø12.7 (1/2") MCAV127 Unit : mm...
Page 16 Outdoor Unit GR79C5TA* GR99C5TA* GR129C5TA* 4 – ø12 holes Air intake Wide tube service valve ø9.52 (3/8") GR79/99 ø12.7 (1/2") GR129 Narrow tube service valve Air discharge ø6.35 (1/4") Unit : mm...
Page 17 4. REFRIGERANT FLOW DIAGRAM Indoor Unit MCAV77C5TA* Outdoor Unit GR79C5TA* MCAV97C5TA* GR99C5TA* Indoor Unit Outdoor Unit Wide tube service Compressor Accumulator Wide tube valve Muffler O.D. ø9.52 mm (3/8 ") Narrow tube service Narrow tube valve Capillary tube O.D. ø6.35 mm (1/4") Indoor Unit MCAV127C5TA*...
Page 18 Insulation of Refrigerant Tubing IMPORTANT Insulation Because capillary tubing is used in the outdoor unit, both the Thickness: Thickness: wide and narrow tubes of this air conditioner become cold. To Min. 8 mm Min. 8 mm prevent heat loss and wet floors due to dripping of condensation, both tubes must be well insulated with a proper insulation material.
Page 19 5. PERFORMANCE DATA 5-1. Performance charts Indoor Unit MCAV77C5TA* Outdoor Unit GR79C5TA* Cooling Characteristics Indoor inlet air D.B. temp. (°C) 19.4 Outdoor inlet air D.B. temp. (°C) Indoor inlet air 1.38 (13) D.B. temp. (°C) 1.28 (12) 1.18 (11) 1.08 (10) 0.98 ( 9 ) 0.89 ( 8 ) 0.79 ( 7 )
Page 20 Indoor Unit MCAV97C5TA* Outdoor Unit GR99C5TA* Cooling Characteristics Indoor inlet air D.B. temp. (°C) 19.4 Outdoor inlet air D.B. temp. (°C) Indoor inlet air 1.38 (13) D.B. temp. (°C) 1.28 (12) 1.18 (11) 1.08 (10) 0.98 ( 9 ) 0.89 ( 8 ) 0.79 ( 7 ) 19.4 0.69 ( 6 )
Page 21 Indoor Unit MCAV127C5TA* Outdoor Unit GR129C5TA* Cooling Characteristics Indoor inlet air D.B. temp. (°C) 19.4 Outdoor inlet air D.B. temp. (°C) Indoor inlet air 1.38 (13) D.B. temp. (°C) 1.28 (12) 1.18 (11) 1.08 (10) 0.98 ( 9 ) 0.89 ( 8 ) 0.79 ( 7 ) 0.69 ( 6 ) 19.4...
Page 22 5-2. Air Throw Distance Chart Indoor Unit MCAV77C5TA* Room air temp. : 27°C Fan speed High Horizontal distance (m) Axis air verocity 0° Flap angle 30°...
Page 23 Indoor Unit MCAV97C5TA* Room air temp. : 27°C Fan speed High Horizontal distance (m) Axis air verocity 0° Flap angle 30°...
Page 24 Indoor Unit MCAV127C5TA* Room air temp. : 27°C Fan speed High Horizontal distance (m) Axis air verocity 0° Flap angle 30°...
Page 25 5-3. Cooling Capacity Indoor Unit MCAV77C5TA* Outdoor Unit GR79C5TA* 230V Single Phase 50Hz RATING CAPACITY 2.05 kW AIR FLOW RATE 430 m EVAPORATOR CONDENSER ENT. TEMP. °C OUTDOOR AMBIENT TEMP. °C W.B. D.B. 2.07 1.98 1.89 1.80 1.69 1.55 0.42 0.45 0.48 0.52...
Page 26 Indoor Unit MCAV97C5TA* Outdoor Unit GR99C5TA* 230V Single Phase 50Hz RATING CAPACITY 2.65 kW AIR FLOW RATE 470 m EVAPORATOR CONDENSER ENT. TEMP. °C OUTDOOR AMBIENT TEMP. °C W.B. D.B. 2.67 2.55 2.44 2.32 2.18 2.01 0.59 0.64 0.68 0.73 0.80 0.86 1.84...
Page 27 Indoor Unit MCAV127C5TA* Outdoor Unit GR129C5TA* 230V Single Phase 50Hz RATING CAPACITY 3.50 kW AIR FLOW RATE 490 m EVAPORATOR CONDENSER ENT. TEMP. °C OUTDOOR AMBIENT TEMP. °C W.B. D.B. 3.53 3.37 3.22 3.07 2.88 2.65 0.89 0.97 1.03 1.11 1.23 1.36 2.31...
Page 28 6. ELECTRICAL DATA 6-1. Electrical Characteristics Indoor Unit MCAV77C5TA* Outdoor Unit GR79C5TA* Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 230V 1-phase 50Hz Rating Conditions Running Amps. 0.11 0.24 2.45 Power Input 0.025 0.055 0.551 0.63 Full Load Conditions Running Amps.
Page 29 6-2. Electric Wiring Diagrams To avoid electrical shock hazard, be sure to Indoor Unit MCAV77C5TA* disconnect power before checking, servicing MCAV97C5TA* WARNING MCAV127C5TA* and/or cleaning any electrical parts. 8512-5253-304xx-2...
Page 30 To avoid electrical shock hazard, be sure to Outdoor Unit GR79C5TA* disconnect power before checking, servicing GR99C5TA* WARNING GR129C5TA* and/or cleaning any electrical parts. 8512-5253-358xx-1...
Page 31 7. FUNCTION 7-1. Room Temperature Control Room temperature control is obtained by cycling the compressor ON and OFF under control of the room temperature sensor in the remote control unit. The room temperature (and other information) is transmitted every 3 minutes by the remote control unit to the controller in the indoor unit.
Page 32 7-2. Dry Operation (Dehumidification) 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 33 7-3. Freeze Prevention 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. The compressor does not start again until the temperature rises above 8°C or 6 minutes has elapsed.
Page 34 8. TROUBLESHOOTING 8-1. 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. 8-1-1. Check power supply wiring. Check that power supply wires are correctly connected to terminals L and N on the terminal plate in the indoor unit.
Page 35 8-2. Air conditioner does not operate. 8-2-1. 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 2MΩ...
Page 36 B. Circuit breaker trips in several minutes after turning the air conditioner on. There is a possibility of short circuit. • Check capacity of circuit breaker. Replace with suitable one (larger capacity). Capacity of circuit breaker is suitable. Measure resistance of outdoor fan •...
Page 37 D. 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 38 8-2-3. Only outdoor unit does not run. A. Check setting temperature. Is room temperature too low ? Try to lower setting temperature by temperature setting button ( button). Outdoor unit still does not run. • Try to run using another remote control unit.
Page 39 8-3. Some part of air conditioner does not operate. 8-3-1. 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 40 8-3-3. 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 41 8-4. Air conditioner operates, but abnormalities are observed. 8-4-1. Poor cooling. • Check position of remote control unit. Change position of remote Cool air from air conditioner reaches • control unit. position directly. • Wide and narrow tubes between Insulate both wide and narrow indoor unit and outdoor unit are tubes separately and then insulated.
Page 42 8-5. If a sensor is defective. 8-5-1. Indoor coil temp. thermistor (TH1) is defective. • Operation lamp on front side of • Thermistor (TH1 ) is defective. indoor unit is flashing on and off. (*) • Replace thermistor. NOTE Alarm Signal (*) Operation lamp on the front side of the indoor unit will flash on and off when the indoor coil thermistor is defective.
Page 43 9. CHECKING ELECTRICAL COMPONENTS power plug 9-1. Measurement of Insulation (Local supply) Resistance Ground The insulation is in good condition if the resistance exceeds 2MΩ. probe Insulation 9-1-1. Power Supply Wires tester NOTE Clamp the grounding terminal of the power plug with a lead clip of the insulation resistance tester and The shape of the power plug may differ from measure the resistance by placing a probe on either of...
Page 44 9-2. Checking Continuity of Fuse Fuse on PCB Ass'y 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 Check for continuity using a multimeter as shown in Fig.
Page 45 In order to carry on a constant improvement, our products can be modified without prior notice. Per garantire un costante miglioramento dei nostri prodotti, ci riserviamo di modificarli senza preavviso. Par souci d’amélioration constante, nos produits peuvent être modifiés sans préavis. Unsere Produkte werden laufend verbessert und können Vorankündigung abgeändert Werden.

This manual is also suitable for:

Mcav97c5ta series Mcav127c5ta series Gr79c5ta series Gr99c5ta series Gr129c5ta series