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Summary of Contents for Technibel Climatisation CAV92MR5TA
- Page 1 TECHNICAL DATA & SERVICE MANUAL INDOOR UNIT: CAV92MR5TA- DUAL-SPLIT SYSTEM AIR CONDITIONER 0.8180.277.0 08/2002...
- Page 2 IMPORTANT! • Ground the unit following local electrical codes. • 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.
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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. ELECTRICAL DATA 3-1 Electric Wiring Diagrams 4. FUNCTION 4-1 Room Temperature Control 4-2 Dry Operation (Dehumidification) 4-3 Freeze Prevention (Cooling) 4-4 Overload Prevention (Heating) 4-5 Cold Draft Prevention (Heating) 4-6 Defrosting Operation (Heating) -
Page 4: Specifications
1. SPECIFICATIONS 1-1 Unit Specifications CAV92MR5TA- 220 - 240V ~ 50Hz Power source 230V Voltage rating Cooling Heating Performance See catalogue with the requested matching Capacity 700/600/500 Air circulation (High/Med./Low) m³/h Features Microprocessor/ I.C. thermostat Controls/Temperature controls Control unit Wireless remote control unit Timer ON/OFF 24 hours &... -
Page 5: Major Component Specifications
1-2 Major Component Specifications CAV92MR5TA- Controller PCB XMR98EH Part No. Controls Microprocessor Control circuit fuse 250 V - 3,15 A RCS-6MHPN4E-G Remote Control Unit Fan & Fan Motor Centrifugal fan Type 1…. Ø 280 / L 175 Q'ty ……. Dia. and lenght R4E280-AK45-12…1... -
Page 6: Other Component Specifications
1-3 Other Component Specifications CAV92MR5TA- ATR-J105 Trasformer AC 230V, 50/60Hz Rating Primary 19V - 0.526A Secondary 10 VA Capacity Ω (at 21°C) Coil resistance Primary (WHT-WHT): 205 ± 10% Secondary (BRN-BRN): 2,0 ± 10% Thermal cut-off temp. 150°C PBC-41E-S14 Thermistor ( Coil sensor TH1) ΚΩ... -
Page 7: Dimensional Data
2. DIMENSIONAL DATA Units: mm... -
Page 8: Electrical Data
3. ELECTRICAL DATA 3-1 Electric Wiring Diagrams... -
Page 9: Function
4. FUNCTION 4-1. 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 informations) is transmitted every 5 minutes by the remote control unit to the controller in the indoor unit. - Page 10 ■ 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 5 minutes by the remote control unit to the controller in the indoor unit.
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Page 11: Dry Operation (Dehumidification)
4-2. 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 ON/OFF cycle automatically as shown in the chart below according to the room temperature. -
Page 12: Freeze Prevention (Cooling)
4-3. 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 13: Cold Draft Prevention (Heating)
4-5. Cold draft Prevention (Heating) ● This function controls indoor fan speed so that strong draft of cold air could not blow out before the indoor heat exchange coil have sufficiently warmed up. ● STANDBY lamp of the indoor unit lights up when this function is working. ●... -
Page 14: Defrosting Operation (Heating)
4-6. Defrosting Operation (Heating) ■ Defrosting Flowchart. * Split System A: Indoor unit A Split System A (or B) Split System B (or A) Compressor A Solenoid coil A * Split System B: Indoor unit B Compressor B Heating operation Heating operation Solenoid coil B 20 minutes masking... -
Page 15: Drain Pump And Float Switch
■ Defrosting Mode Timing Chart Start of defrosting Release of defrosting Defrosting 13.5 min. or outdoor coil temp. 26°C 65 sec. 65 sec. Compressor A 5 sec. 5 sec. 5 sec. Compressor B 1 min. 4-way valve A and B Outdoor fan 30 sec. -
Page 16: Troubleshooting
5. TROUBLESHOOTING 5-1. 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. 5-1-1. 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 17 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 : Measure resistance of outdoor fan •...
- Page 18 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 control receiver on front of indoor Clean receiver.
- Page 19 5-2-3. 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).
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Page 20: Some Part Of Air Conditioner Does Not Operate
5-3. Some part of air conditioner does not operate. 5-3-1. 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 21 5-3-4. Only compressor does not run Check compressor motor Overload relay is working Measure coil resistance of capacitor (CA, CB) (OLR 1 to 4) power relay (PRA, PRB) Measure resistance of Temperature of compressor compressor motor winding is abnormally high Refrigerant gas shortage Charge refrigerant gas Measure power supply voltage...
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Page 22: Air Conditioner Operates, But Abnormalities Are Observed
5-4. Air conditioner operates, but abnormalities are observed 5-4-1. Operation does not switch from HEAT to COOL (or COOL to HEAT) Remote control unit Receiver in lamp ass'y may be defective may be defective Measure resistance of 4-way valve's winding (20S) COOL to HEAT Check voltage between terminals Outdoor PCB ass'y is defective... - Page 23 5-4-2. 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.
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Page 24: If A Sensor Is Defective
5-5. If a sensor is defective. 5-5-1. Thermistor (TH1 or TH2) is defective. • Operation lamp on front side of • Indoor coil thermistor (TH1 ) or room indoor unit is blinking. (*) air thermistor (TH2 ) is defective. • Replace the thermistor. Alarm Signal (*) NOTE Operation lamp on the front side of the indoor unit will blink when either indoor coil thermistor or room... -
Page 25: Checking Electrical Components
6. CHECKING ELECTRICAL COMPONENTS 6-1. Measurement of Insulation power plug (Local supply) Resistance ● The insulation is in good condition if the resistance Ground exceeds 2MΩ. probe 6-1-1. 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 26: Checking Continuity Of Fuse On Pcb Ass'y
6-2. 7-2. 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 27: Remote Control Address
7. REMOTE CONTROL ADDRESS 7-1 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 28 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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