Table of Contents
Advertisement
Quick Links
TECHNICAL DATA & SERVICE MANUAL
MCAV77R5VAA
MCAV97R5VAA
MCAV127R5VAA
KPAV128R5TAA
SPLIT SYSTEM AIR CONDITIONER
MCAV77R5VAA
MCAV97R5VAA
MCAV127R5TAA
KPAV128R5TAA
Floor-Mounted
Ceiling-Mounted
Indoor Unit
0.8180.156.0
+
GRV79R5VAA
+
GRV99R5VAA
+
GRV129R5VAA
+
GRV129R5VAA
Outdoor Unit
02/2001
GRV79R5VAA
GRV99R5VAA
GRV129R5VAA
Advertisement
Chapters
Table of Contents
Troubleshooting
Related Manuals for Technibel GRV79R5VAA
Summary of Contents for Technibel GRV79R5VAA
- Page 1 TECHNICAL DATA & SERVICE MANUAL MCAV77R5VAA GRV79R5VAA MCAV97R5VAA GRV99R5VAA MCAV127R5VAA GRV129R5VAA KPAV128R5TAA GRV129R5VAA SPLIT SYSTEM AIR CONDITIONER MCAV77R5VAA Indoor Unit MCAV97R5VAA MCAV127R5TAA Outdoor Unit GRV79R5VAA GRV99R5VAA GRV129R5VAA KPAV128R5TAA Floor-Mounted Ceiling-Mounted 0.8180.156.0 02/2001...
- 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 OPERATING RANGE SPECIFICATIONS Unit Specification Major Component Specifications Other Component Specifications DIMENSIONAL DATA REFRIGERANT FLOW DIAGRAM PERFORMANCE DATA 5-1 Performance Charts 5-2 Air Throw Distance Chart 5-3 Cooling Capacity 5-4 Heating Capacity ELECTRICAL DATA 6-1 Electrical Characteristic 6-2 Electric Wiring Diagrams INSTALLATION INSTRUCTIONS 7-1 Installation Site Selection... - Page 4 CHECKING ELECTRICAL COMPONENTS 11-1 Measurements of insulation resistance 11-2 Checking continuity of fuse on PCB ass’y 11-3 Checking motor capacitor DISASSEMBLY PROCEDURE FOR INDOOR UNIT 12-1 Removing air intake grille 12-2 Removing side panels 12-3 Access and removal of electrical components box 12-4 Removing flap motor 12-5...
-
Page 5: Operating Range
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. Maximum 27°C D.B. 24°C D.B. / 18°C W.B. Heating Minimum 16°C D.B. –... -
Page 6: Specifications
2. SPECIFICATIONS 2-1. Unit Specifications Indoor Unit MCAV77R5VAA Outdoor Unit GRV79R5VAA Power Source 220–240V ~ 50Hz Voltage rating 230 V Performance Cooling Heating Capacity 2.30 BTU/h 7,843 8,696 Air circulation (High) Moisture removal (High) Liters/h — Electrical Rating Cooling Heating... - Page 7 Indoor Unit MCAV97R5VAA Outdoor Unit GRV99R5VAA Power Source 220–240V ~ 50Hz Voltage rating 230 V Performance Cooling Heating Capacity 2.65 BTU/h 9,037 11,93 Air circulation (High) Moisture removal (High) Liters/h — Electrical Rating Cooling Heating Available voltage range 198 ~ 264 Running amperes Power input 1030...
- Page 8 Indoor Unit MCAV127R5VAA Outdoor Unit GRV129R5VAA Power Source 220–240V ~ 50Hz Voltage rating 230 V Performance Cooling Heating Capacity 3.30 4.10 BTU/h 11,424 13,98 Air circulation (High) Moisture removal (High) Liters/h — Electrical Rating Cooling Heating Available voltage range 198 ~ 264 Running amperes Power input 1,300...
- Page 9 Indoor Unit KPAV128R5TAA Outdoor Unit GRV129R5VAA Power Source 220–240V ~ 50Hz Voltage rating 230 V Performance Cooling Heating Capacity 3.30 4.10 BTU/h 11,424 14,98 Air circulation (High) Moisture removal (High) Liters/h — Electrical Rating Cooling Heating Available voltage range 198 ~ 264 Running amperes Power input 1300...
-
Page 10: Major Component Specifications
2-2. Major Component Specifications 2-2-1. Indoor Unit Indoor Unit MCAV77R5VAA Controller Part No. POW-K78EH(A), POW-K8EH(B) Controls Microprocessor Control circuit fuse 250 V 3.15 A Remote Control Unit RCS-8HPS3E Fan & Fan Motor Type Cross-flow Q'ty ... Dia. and length 1 ... ø95 / L617 Fan motor model ... - Page 11 Indoor Unit MCAV97R5VAA Controller Part No. POW-K78EH(A), POW-K8EH(B) Controls Microprocessor Control circuit fuse 250 V 3.15 A Remote Control Unit RCS-8HPS3E Fan & Fan Motor Type Cross-flow Q'ty ... Dia. and length 1 ... ø95 / L617 Fan motor model ... Q'ty KFV4Q-11H5P-S ...
- Page 12 Indoor Unit MCAV127R5VAA Controller Part No. POW-K128EH(A), POW-K8EH(B) Controls Microprocessor Control circuit fuse 250 V 3.15 A Remote Control Unit RCS-8HPS3E Fan & Fan Motor Type Cross-flow Q'ty ... Dia. and length 1 ... ø95 / L617 Fan motor model ... Q'ty KFV4Q-11H5P-S ...
- Page 13 Indoor Unit KPAV128R5VAA Controller PCB Part No. POW-K126GHS-(C) Controls Microprocessor Control circuit fuse 250 V 3.15 A Remote Control Unit RCS-6HPS3E Fan & Fan Motor Type Cross-flow Q'ty ... Dia. and length 2 ... ø130 / L180 Fan motor model ... Q'ty K48407-M01596 ...
- Page 14 2-2-2. Outdoor Unit Outdoor Unit GRV79R5VAA Controller POW-C96GH Compressor Type Rotary (Hermetic) Compressor model C-RN75H5A 80225245F Nominal output Compressor oil ... Amount ROTARY OIL ... 470 Ω Coil resistance (Ambient temp. 25°C) C–R : 3.45 C–S : 8.79 Safety devices...
- Page 15 Outdoor Unit GRV99R5VAA Controller POW-C96GH Compressor Type Rotary (Hermetic) Compressor model C-RN90H5B 80228345-S Nominal output Compressor oil ... Amount ROTARY OIL ... 470 Ω Coil resistance (Ambient temp. 25°C) C–R : 3.07 C–S : 6.69 Safety devices Type External(OLR A) External(OLR T) Overload relay MRA38066-3229...
- Page 16 Outdoor Unit GRV129R5VAA Controller POW-C96GH Compressor Type Rotary (Hermetic) Compressor model C-RN110H5B 80235645B Nominal output 1,100 Compressor oil ... Amount FV68S ... 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 MRA38065-3229...
-
Page 17: Other Component Specifications
Resistance kΩ 0°C 15.0 ± 2% Thermistor (Room sensor) DTN-TKS134B Resistance kΩ 25°C 5.0 ± 3% Outdoor Unit GRV79R5VAA GRV99R5VAA GRV129R5VAA Power Relay (PR) DFU24D1F Coil rating DC 24V Ω (at 20°C) Coil resistance 650 ± 10% Contact rating AC 250V, 20A Thermostat (Defrost thermo. - Page 18 Indoor Unit KPAV128R5TAA Thermistor (Room sensor TH2) KTEC-35-S6 Resistance kΩ 10°C 10.0 ± 4% 30°C 4.0 ± 4% 15°C 7.9 ± 4% 35°C 3.3 ± 4% 20°C 6.3 ± 4% 40°C 2.7 ± 4% 25°C 5.0 ± 4% 50°C 1.8 ± 4% Thermistor (Coil sensor TH1) PBC-41E-S14 Resistance...
-
Page 19: Dimensional Data
3. DIMENSIONAL DATA Indoor Unit MCAV77R5VAA MCAV97R5VAA MCAV127R5VAA 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,MCAV97 Wide tube ø12.7 (1/2") MCAV127 Unit : mm... - Page 20 Outdoor Unit GRV79R5VAA GRV99R5VAA GRV129R5VAA 4 – ø12 holes Air intake Wide tube service valve ø9.52 (3/8") GRV79,GRV99 ø12.7 (1/2") GRV129 Narrow tube service valve Air discharge ø6.35 (1/4") Unit : mm...
-
Page 21: Refrigerant Flow Diagram
4. REFRIGERANT FLOW DIAGRAM Indoor Unit MCAV77R5VAA Outdoor Unit GRV79R5VAA Indoor unit Outdoor unit Accumulator Wide tube service Wide tube valve 4-way Muffler valve O.D. ø9.52 mm (3/8 ") Narrow tube service Capillary tube Capillary tube Narrow tube valve Cooling cycle Strainer O.D. - Page 22 Indoor Unit MCAV127R5VAA Outdoor Unit GRV129R5VAA KPAV128R5TAA Indoor unit Outdoor unit Accumulator Wide tube service Wide tube valve 4-way Muffler valve O.D. ø12.7 mm (1/2 ") Narrow tube service Capillary tube Narrow tube valve Cooling cycle Strainer O.D. Check ø6.35 mm valve Heating cycle (1/4")
-
Page 23: Performance Data
5. PERFORMANCE DATA 5-1. Performance charts Indoor Unit MCAV77R5VAA Outdoor Unit GRV79R5VAA Cooling Characteristics Heating Characteristics Indoor inlet air Indoor inlet air D.B. temp. (°C) D.B. temp. (°C) 19.4 –5 Outdoor inlet air D.B. temp. (°C) Outdoor inlet air D.B. temp. (°C) - Page 24 Indoor Unit MCAV97R5VAA Outdoor Unit GRV99R5VAA Cooling Characteristics Heating Characteristics Indoor inlet air Indoor inlet air D.B. temp. (°C) D.B. temp. (°C) 19.4 –5 Outdoor inlet air D.B. temp. (°C) Outdoor inlet air D.B. temp. (°C) Indoor inlet air Indoor inlet air 2.95 (30) 1.38 (13) D.B.
- Page 25 Indoor Unit MCAV127R5VAA KPAV128R5TAA Outdoor Unit GRV129R5VAA Cooling Characteristics Heating Characteristics Indoor inlet air Indoor inlet air D.B. temp. (°C) D.B. temp. (°C) 19.4 –5 Outdoor inlet air D.B. temp. (°C) Outdoor inlet air D.B. temp. (°C) Indoor inlet air Indoor inlet air 1.38 (13) 2.95 (30)
-
Page 26: Air Throw Distance Chart
5-2. Air Throw Distance Chart Indoor Unit MCAV77R5VAA 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 27 Indoor Unit MCAV97R5VAA 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° Flap angle 60°...
- Page 28 Indoor Unit MCAV127R5VAA 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° Flap angle 60°...
- Page 29 Indoor Unit KPAV128R5TAA Ceiling mounted Cooling Room air temp. : 27°C Fan speed High Horizontal distance (m) Axis air verocity Flap angle 30° 45° Heating Room air temp. : 20°C Fan speed High Horizontal distance (m) Axis air verocity Flap angle 60°...
-
Page 30: Cooling Capacity
5-3. Cooling Capacity Indoor Unit MCAV77R5VAA Outdoor Unit GRV79R5VAA 230V Single Phase 50Hz RATING CAPACITY 2.30 kW AIR FLOW RATE 430 m EVAPORATOR CONDENSER ENT. TEMP. °C OUTDOOR AMBIENT TEMP. °C W.B. D.B. 2.32 2.22 2.12 2.02 1.89 1.74 0.53 0.58... - Page 31 Indoor Unit MCAV97R5VAA Outdoor Unit GRV99R5VAA 230V Single Phase 50Hz RATING CAPACITY 2.65 kW AIR FLOW RATE 430 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 0.67 0.72 0.77 0.83 0.92 1.01 1.80...
- Page 32 Indoor Unit MCAV127R5VAA Outdoor Unit GRV129R5VAA 230V Single Phase 50Hz RATING CAPACITY 3.3 kW AIR FLOW RATE 430 m³/h EVAPORATOR CONDENSER ENT.TEMP. °C OUTDOOR AMBIENT TEMP. °C W.B. D.B. 3.13 3.03 2.89 2.71 2.50 0.85 0.90 0.97 1.07 1.16 2.14 2.10 2.03 1.94...
- Page 33 Indoor Unit KPAV128R5TAA Outdoor Unit GRV129R5VAA 240V Single Phase 50Hz RATING CAPACITY 3.35 kW AIR FLOW RATE 700 m EVAPORATOR CONDENSER ENT. TEMP. °C OUTDOOR AMBIENT TEMP. °C W.B. D.B. 3.38 3.23 3.08 2.93 2.76 2.54 0.90 0.97 1.04 1.12 1.22 1.32 2.42...
-
Page 34: Heating Capacity
5-4. Heating Capacity –5 –8 Outdoor temperature (°C DB) NOTE … Point of Rating condition Black dot in the chart indicate the following rating condition. Indoor : 20°C D.B. Outdoor : 7°C D.B. / 6°C W.B. 2) Above characteristics indicate instantaneous operation, which does not take into consideration defrost operation. -
Page 35: Electrical Data
6. ELECTRICAL DATA 6-1. Electrical Characteristics Indoor Unit MCAV77R5VAA Outdoor Unit GRV79R5VAA COOLING 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 3.35 Power Input 0.025 0.055 0.74... - Page 36 Indoor Unit MCAV97R5VAA Outdoor Unit GRV99R5VAA COOLING Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 230V 1-phase 50Hz Rating Conditions Running Amps. 0.12 0.24 4.34 Power Input 0.027 0.055 0.948 1.03 Full Load Conditions Running Amps. 0.12 0.24 5.15...
- Page 37 Indoor Unit MCAV127R5VAA Outdoor Unit GRV129R5VAA COOLING Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 230V 1-phase 50Hz Rating Conditions Running Amps. 0.13 0.28 5.79 Power Input 0.031 0.062 1.207 Full Load Conditions Running Amps. 0.13 0.28 6.79...
- Page 38 Indoor Unit KPAV128R5TAA Outdoor Unit GRV129R5VAA COOLING Indoor Unit Outdoor Unit Complete Unit Fan Motor Fan Motor Compressor Performance at 230V ~ 50Hz Rating Conditions Running Amps. 0.29 0.32 Power Input 0.070 0.076 1.154 1.13 Full Load Conditions Running Amps. 0.29 0.32 6.59...
-
Page 39: Electric Wiring Diagrams
6-2. Electric Wiring Diagrams To avoid electrical shock hazard, be sure to Indoor Unit MCAV77R5VAA disconnect power before checking, servicing MCAV97R5VAA WARNING MCAV127R5VAA and/or cleaning any electrical parts. - Page 40 To avoid electrical shock hazard, be sure to Indoor Unit KPAV128R5TAA disconnect power before checking, servicing WARNING and/or cleaning any electrical parts.
- Page 41 To avoid electrical shock hazard, be sure to Outdoor Unit GRV79R5VAA disconnect power before checking, servicing GRV99R5VAA WARNING and/or cleaning any electrical parts.
- Page 42 To avoid electrical shock hazard, be sure to Outdoor Unit GRV129R5VAA disconnect power before checking, servicing WARNING and/or cleaning any electrical parts.
-
Page 43: Installation Instructions
7. INSTALLATION INSTRUCTIONS 7-1. Installation Site Selection Indoor Unit 15cm min. 15cm 15cm min. min. To prevent abnormal heat INDOOR UNIT generation and the possibility WARNING of fire, don’t place obstacles, enclosures and grills in front Front View of or surrounding the air... - Page 44 Outdoor Unit AVOID: heat sources, exhaust fans, etc. (Fig. 3) Exhaust fan damp, humid or uneven locations. Hot air Heat source choose a place as cool as possible. Outdoor unit choose a place that is well ventilated. allow enough room around the unit for air intake/exhaust and possible maintenance.
-
Page 45: Remote Control Unit Installation Position
7-2. Remote Control Unit Installation Removable mounting Position Wall The remote control unit can be operated from either a non-fixed position or a wall-mounted position. To ensure that the air conditioner operates correctly, do not install the remote control unit in the following places: Special mounting In direct sunlight... -
Page 46: Recommended Wire Length And Diameter
(B) Power Line (m) (C) Control Line (m) Area (mm Fuse or Circuit Breaker Capacity Model 2.5 mm 2.5 mm 1.0 mm GRV79R5VAA GRV99R5VAA GRV129R5VAA WIRING SYSTEM DIAGRAM Be sure to comply with local codes on running the WARNING Indoor unit Outdoor unit... -
Page 47: Function
8. FUNCTION 8-1. 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. The room temperature (and other information) is transmitted every 3 minutes by the remote control unit to the controller in the indoor unit. - Page 48 Heating 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 49: Dry Operation
8-2. 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 50: Freeze Prevention
8-4. 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. The compressor does not start again until the temperature rises above 8°C or 6 minutes has elapsed. -
Page 51: Overload Prevention
8-5. Overload Prevention (Heating) This function prevents overheating of the indoor heat exchange coil. When the temperature of the indoor heat exchange coil rises above B°C, and if the indoor fan is L (low speed), then the fan speed changes from L (low speed) to M (medium speed). When the temperature of the indoor heat exchange coil rises above A°C, the outdoor fan stops. -
Page 52: Cold Draft Prevention
8-6. 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. STANDBY lamp on front of the indoor unit lights up when this function is working. when 10 minutes has elapsed,the fan speed is automatically switched to set speed regardless of indoor heat exchange coil temperature. -
Page 53: Defrosting Operation
8-7. Defrosting Operation (Heating) Defrosting Flowchart Compressor ON Release of overload prevention (Outdoor fan operates.) Overload prevention works. Does outdoor fan stop? Outdoor fan is either operated Indoor heat exchanger coil Integrated operating time of Integrated operating time of or stopped for more than 10 temperature drops 0.8°C per compressor is more than compressor is more than 1.5... - Page 54 Defrosting Mode Timing Chart Release of defrosting Start of defrosting 32 seconds 11 minutes 32 seconds Compressor Outdoor fan 2 seconds 2 seconds Solenoid coil (4 – way valve) Indoor fan Set speed Set speed Standby lamp Indoor heat exch. coil temp.
-
Page 55: Refrigerant R407C:special Precaution When Servicing Unit
9. REFRIGERANT R407C : SPECIAL PRECAUTIONS WHEN SERVICING UNIT 9-1. Characteristics of new refrigerant R407C 9-1-1. What is new refrigerant R407C R407C is a new refrigerant that contains three types of non-azeotropy-type mixed refrigerant which does not adversely affect the Earth's ozone layer. Its refrigeration capacity and energy efficiency are about the same level as the conventional refrigerant R22 9-1-2. -
Page 56: Tools Specifically For R407C
9-3. Tools specifically for R407C For servicing, use the following tools for R407C Tool Distinction Tool Name • Gauge manifold • Charging hose • Gas leak detector • Refrigerant cylinder • Charging cylinder Tools specifically for R407C • Refrigerant recovery unit •... -
Page 57: In Case Of Compressor Malfunction
9-5. In case of compressor malfunction Should the compressor malfunction, be sure to replace compressor as quickly as CAUTION possible. Use only the tools indicated exclusively for R407C. See "10-3. Tools specifically for R407C". 9-5-1.Procedure for replacing compressor (1) Recovering refrigerant •... - Page 58 (5) Recharging Valve • Be sure to charge the specified amount of refrigerant in liquid state using the service port of wide tube service valve. The proper amount is listed on the unit's nameplate. When the entire amount cannot be charged all at once, charge gradually while operating the unit in Cooling Operation.
-
Page 59: In Case Refrigerant Is Leaking
9-6. In case refrigerant is leaking Never attempt to charge additional refrigerant when refrigerant has been leaking CAUTION from the unit. Follow the procedure described below to locate points of leaks and carry out repairs, then recharge the refrigerant. (1) Detecting Leaks •... - Page 60 (6) Recharging Valve • Be sure to charge the specified amount of refrigerant in liquid state using the service port of wide tube service valve. The proper amount is listed on the unit's nameplate. When the entire amount cannot be charged all at once, charge gradually while operating the unit in Cooling Operation.
-
Page 61: Charging Additional Refrigerant
9-7. Charging additional refrigerant 9-7-1.When tubes are extended • Observe the proper amount of refrigerant as stated in this service manual or the installation manual that came with the indoor unit. Charge additional refrigerant in liquid state. Never charge additional refrigerant if refrigerant is leaking from the unit. Follow CAUTION instructions given in "10-6. -
Page 62: 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 L and N on the terminal plate in the indoor unit. -
Page 63: 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 2MΩ... - Page 64 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. In case of Heating operation : •...
- Page 65 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 66 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 ( button).
-
Page 67: Some Parts 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 68 10-3-4. Only compressor does not run. • Check compressor motor Overload relay is working. (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 (R407c). •...
-
Page 69: Air Conditioner Operates, But Abnormalities Are Observed
10-4. Air conditioner operates, but abnormalities are observed. 10-4-1. 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 70 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 71: If A Sensor Is Defective
10-5. If a sensor is defective. 10-5-1. 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. Alarm Signal (*) NOTE Operation lamp on the front side of the indoor unit will flash on and off when the indoor coil thermistor is defective. -
Page 72: Checking Electrical Components
11. CHECKING ELECTRICAL COMPONENTS power plug 11-1. Measurement of Insulation (Local supply) Resistance Ground The insulation is in good condition if the resistance exceeds 2MΩ. probe Insulation 11-1-1. 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 73: Checking Continuity Of Fuse On Pcb Ass'y
11-2. 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 74: Disassembly Procedure For Indoor Unit
12. DISASSEMBLY PROCEDURE FOR INDOOR UNIT IMPORTANT! Please Read Before Starting Safety precautions for servicing the CEILING-MOUNTED indoor unit Before attempting to replace heavy and bulky parts such as the evaporator and fan motor, disconnect the indoor unit from the system and place it on the floor. Refer to the steps given below. When checking or servicing the air intake grille, side panels, or electrical component box, first check that power is completely disconnected. -
Page 75: Removing Side Panels
12-2. Removing Side Panels Hook (1) Remove the 3 screws attaching the left side panel. (Fig. 3) Slot (2) Note the position of the hook on the inside of the left side panel. To disengage the hook from the slot, Hook slide down the panel for removal. -
Page 76: Removing Flap Motor
12-4. Removing Flap Motor (1) Remove the 3 screws used to mount the top panel. Screw (Fig. 6) Top panel (2) While unlatching the 2 tabs inside the back of the top panel, lift the top panel diagonally in the direction of the arrow.(Fig. - Page 77 (3) Remove the 6 screws of the front panel and pull it toward you. (Fig. 9) (4) Remove the 2 screws used to mount the Screw evaporator. (Fig. 10) (5) Remove the rubber cap to pull the thermistor out of Front panel the evaporator.
-
Page 78: Removing Fan And Fan Motor
12-6. Removing Fan and Fan Motor (1) Unlatch the 2 hooks on each side to take off the front fan casing. (Fig. 12) Hook Front fan casing Hook Fig.12 (2) Remove the 2 screws attaching the rear fan casing and then pull the fan casing out. Rear fan casing Fig.13 (3) Insert a hex wrench in the fan boss and turn it... -
Page 79: Appendix Instructions Manual
APPENDIX INSTRUCTION MANUAL MCAV77R5VAA + GRV79R5TAA MCAV97R5VAA + GRV99R5TAA MCAV127R5VAA + GRV129R5TAA... -
Page 80: Product Information
Contents Page Features......................2 Product Information ..................3 Alert Symbols ....................3 Installation Location..................4 Electrical Requirements .................. 4 Safety Instructions ..................4 Names of Parts ....................5 Using the Remote Control Unit ..............10 Operation with the Remote Control Unit ........... 12 1. -
Page 81: Installation Location
Installation Location We recommend that this air conditioner be installed properly by • qualified installation technicians in accordance with the Installation Instructions provided with the unit. Before installation, check that the voltage of the electric supply in • your home or office is the same as the voltage shown on the nameplate. -
Page 82: Names Of Parts
Names of Parts Air intake INDOOR UNIT Air outlet Remote control unit Drain hose Refrigerant tubes OUTDOOR UNIT Air outlet This illustration is based on the external view of a standard model. NOTE Consequently, the shape may differ from that of the air conditioner which you have selected. - Page 83 Unit Display and Operation Selector Operation selector INDOOR UNIT TEST IMPORTANT REMOTE CONTROL receiver Avoid using radio equipment such as mobile phone near (within 1 m) the indoor unit. Some radio equipment may OPERATION lamp cause malfunction of the unit. OPERATION TIMER lamp TIMER...
- Page 84 Remote Control Unit (Display) Displayed when main unit sensor is in use Displayed when setting temperature SET TEMP Displayed when transmitting data Displayed when temperature is shown Displayed when the temperature setting is at the upper or lower allowable limit Displayed when setting timer Symbols (1) Operation mode...
- Page 85 Remote Control Unit AIR CONDITIONER Sensor Transmitter AIR CONDITIONER SET TEMP Display (Cover closed) 1HR. TEMP. TIMER 1 HR. TIMER button TEMP. setting buttons ON I /OFF ON/OFF operation button NIGHT NIGHT SETBACK button MODE selector button SETBACK MODE CLOCK Program button TIMER FLAP...
- Page 86 Remote Control Unit (continued) TIMER SELECT button No display : The timer does not operate. : The air conditioner stops at the set time. : The air conditioner starts at the set time. : The air conditioner stops and starts, or starts and stops, at the set times every day.
-
Page 87: Using The Remote Control Unit
Using the Remote Control Unit How to Install Batteries ACL button 1. Slide the cover in the direction indicated by the arrow and remove it. 2. Install two AAA alkaline batteries. Make sure the batteries point in the direction marked in the battery compartment. - Page 88 Using the Remote Control Unit (continued) Mounting the Remote Control Unit Removable mounting Non-removable mounting Wall Wall (Packed in the indoor unit) (Packed in the indoor unit) Mounting on a wall A. Removable mounting 1) Momentarily hold the remote control unit at the desired mounting position.
-
Page 89: Operation With The Remote Control Unit
Operation with the Remote Control Unit 1. Automatic Operation AIR CONDITIONER SET TEMP 1HR. TEMP. TIMER ON I /OFF STEP 2 NIGHT SETBACK MODE CLOCK STEP 1 TIMER FLAP SELECT FAN SPEED TIME SET SELECT SENSOR BATTERIES Check that the circuit breaker on the power panel is turned on and that NOTE the operation selector of the indoor unit is in the ON position. -
Page 90: Manual Operation
Operation with the Remote Control Unit (continued) 2. Manual Operation AIR CONDITIONER SET TEMP 1HR. TIMER TEMP. STEP 3 ON I /OFF STEP 2 NIGHT SETBACK MODE CLOCK STEP 1 FLAP TIMER STEP 5 SELECT FAN SPEED STEP 4 TIME SET SELECT SENSOR BATTERIES... -
Page 91: Adjusting The Fan Speed
Operation with the Remote Control Unit (continued) Choose the best position in the room for the remote control unit, • NOTE which also acts as the sensor for room comfort and transmits the operating instructions. Once you’ve found this best position, always keep the remote control unit there. -
Page 92: Night Setback Mode
Operation with the Remote Control Unit (continued) 4. Night Setback Mode AIR CONDITIONER SET TEMP 1HR. TEMP. TIMER ON I /OFF NIGHT SETBACK MODE CLOCK TIMER FLAP SELECT FAN SPEED Night Setback Mode is used for saving energy. Press the NIGHT SETBACK button while operation. mark appears in the display. - Page 93 Operation with the Remote Control Unit (continued) B. In Heating Mode: When the night setback mode is selected, the air conditioner automatically lowers the temperature setting 2 °C when 30 minutes have passed after the selection was made, and then another 2 °C after another 30 minutes have passed, regardless of the indoor temperature when night setback was selected.
-
Page 94: Special Remarks
Special Remarks ‘‘DRY’’ ( ) Operation How it works? Once the room temperature reaches the level that was set, the unit • repeats the cycle of turning on and off automatically. During DRY operation, the fan speed is automatically set to LOW or •... -
Page 95: Setting The Timer
Setting the Timer ON I /OFF The description below assumes that the switch NOTE on the back of the remote control unit has been set to the degrees Celsius display. NIGHT SETBACK MODE CLOCK FLAP TIMER SELECT FAN SPEED SELECT TIME SET SENSOR BATTERIES... - Page 96 Setting the Timer (continued) 3. How to set the ON time (Example) To start operation at 7:10 Operation Indication 1. Press the Program button ( The timer ON and time CLOCK twice. indications flash. The display will change Press the HH button until 7 is •...
-
Page 97: Using The 1-Hour Off Timer
Using the 1-Hour OFF Timer 1. 1-Hour OFF Timer This function causes the unit to operate for one hour and then stop, regardless of whether the unit is on or off when this button is pressed. indicator in the display indicates that this function is operating. -
Page 98: Adjusting The Airflow Direction
Adjusting the Airflow Direction 1. Horizontal The horizontal airflow can be adjusted by moving the vertical vanes with your hands to the left or right. When the humidity is high, the vertical vanes should be in the front CAUTION position during the cooling or dehumidifying operation. If the vertical vanes are positioned all of the way to the right or left, condensation may begin to form around the air vent and drip down. -
Page 99: Operation Without The Remote Control Unit
Operation without the Remote Control Unit INDOOR UNIT If you have lost the remote control unit or it has trouble, follow the steps below. 1. When the air conditioner is not running TEST If you want to turn on the air conditioner, switch the operation selector to the OFF position, and then to the ON position. - Page 100 Care and Cleaning (continued) Anti-Mold Filter The anti-mold filter behind the air intake grille should be checked and cleaned at least once every two weeks. Air intake grille How to remove the 1. Grasp both ends of anti-mold filter the air intake grille and pull it out and 2.
- Page 101 Care and Cleaning (continued) Air Clean Filter The air cleaning filter removes dust and dirt from the air, and reduces (not provided) odors and smoke from tobacco. The air clean filter is not provided with the air conditioner and must be NOTE purchased separately.
-
Page 102: Troubleshooting
Troubleshooting If your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, contact your dealer or service center. Trouble Possible Cause Remedy Air conditioner does not 1. Power failure. 1. - Page 103 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...