Service manual Portable air conditioners 51AKA 006 51AKB 006G 51AKM 006G 51AKB 008G RTB 165G RTE 165G RTB 205C VTB 075C
Contents page 1. ASSEMBLY DRAWINGS .......................................................................................... 3 2. PARTS DESCRIPTION .......................................................................................... 4/5 2.1 Control panel .................................................................................................. 6/7 2.2 Accessories supplied ........................................................................................ 8 2.3 Dimensions and weight ..
1 ASSEMBLY DRAWINGS mod. 51AKB 006G 51AKB 008G RTB 165G RTB 205C mod. VTB 075C mod. 51AKA 006 mod.
2 PARTS DESCRIPTION Exhaust air outlet Flexible duct Air outlet Control panel Air outlet (for ventilation, dehumidification and heating only) Supply cable with plug Air inlet 4
2 PARTS DESCRIPTION Air filters Condensate collection tank Condensate drain tube 5
2.1 Control panel mod. 51AKB 006 RTB 165F mod. 51AKB 06G RTB 165G 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. OFF position Mode selector TURBO cooling SILENT cooling Dehumidification Low fan speed High fan speed Ventilation function indicator light Cooling indicator light Dehumidification indicator light Full water tank alarm indicator light Thermostat mod. VTB 075F VTB 075G 1. 2. 3. 4. 5. 6.
2.1 Control panel mod. 51AKM 006 51AKM 06G RTE 165F RTE 165G 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. ON-OFF button Mode selector Temperature setting button Fan speed setting button Operation on timer Operation off timer Low fan speed LED High fan speed LED ON timer LED OFF timer LED Display of set temperature and programmed operating times Set temperature LED Heating LED Dehumidification LED Cooling LED Fan only LED mod.
2.3 Dimensions and weight 2.2 Accessories supplied kg 1. Air outlet vent 2. Flexible hose 3. Fastening strap with suction cup 3 27.5 TECHNICAL DATA Model 51AKB 006 / 51AKB 06G RTB 165F / RTB 165G VTB 075F / VTB 075G 51AKM 006 / 51AKM 06G RTE 165F / RTE 165G VTE 075F / VTE 075G Cooling capacity W (Btu/h) 1830 6300 1830 6300 Heating capacity W (Btu/h) ----- 1000 + 1000 3410 + 3410 750 --640 750 1000 + 1000 640 16 16 3.3 --2.9 3.3 4,35 + 4,35 2.9 1.1 0.8 1.1 0.8 88.9 - 1320 72.
4 PERFORMANCE DIAGRAMS Cooling capacity, Btu/h 80% (1) Cooling capacity, Btu/h Cooling capacity, Watt Cooling capacity, Watt 80% (1) 60% (1) 40% (1) Indoor dry bulb temperature °C 60% (1) 40% (1) Indoor dry bulb temperature °C (1) Relative humidity The cooling capacity diagram is based on the room dry bulb temperature for three different relative humidity values.
4 PERFORMANCE DIAGRAMS Suction temperature °C Discharge air temperature °C 80% (1) 60% (1) 40% (1) Discharge air temperature °C Suction temperature °C 80% (1) 60% (1) 40% (1) Indoor dry bulb temperature °C Indoor dry bulb temperature °C (1) Relative humidity The air discharge temperature diagram is based on the room dry bulb temperature and relative humidity. Due to the temperature differences of the air at the outlet, the thermometer must be placed exactly in the position shown in the sketch.
5 WIRING DIAGRAMS mod. 51AKB 006 / 51AKB 06G mod.
5 WIRING DIAGRAMS mod.
5 WIRING DIAGRAMS mod. 51AKM 006 / 51AKM 06G mod. RTE 165F / RTE 165G mod.
6 REFRIGERANT CIRCUIT PRINCIPLE OF OPERATION 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 7 Compressor Condenser Fan Filter Capillary tube Evaporator Gas discharge Liquid Liquid/gas Gas suction R-407c REFRIGERANT 7.1 General 51AKB06G, 51AKM06G, RTB165G, RTE165G, VTB075G and VTE075G units use the new refrigerant R-407c. • Residual refrigerant in the system will have to be pulled out and stored in a disposal cylinder (do not ventilate in ambient).
7.2 Main differences between R-407c and R22 refrigerant R-407c R22 Refrigerant charging procedure Refrigerant charging procedure Refrigerant composition Refrigerant composition Partial refrigerant charge: Partial refrigerant charge: NOT PERMITTED! YES! Complete refrigerant charge only. Partial refrigerant charge allowed. Leak detector Leak detector Use HFC detector only. Use HCFC detector only.
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8 MICROPROCESSOR CONTROL 8.1 Special functions of the buttons Table 1 Pressing two buttons at the same time it is possible to activate some functions which are NOT described in the Instruction Manual. Test Activated function Duration 1 electric heater + LOW SPEED fan (only for models with electric heaters) 7 seconds Self-Test If the and “fan speed” buttons are pressed simultaneously the sequence outlined in the table 1 will start. Press any button to leave the Self-Test mode.
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8.3 Flow charts DEHUMIDIFICATION MODE TIMER ON * START START ROOM TEMPERATURE < 10°C YES COMPRESSOR AND FAN ARE STOPPED UNIT IS DEACTIVATED AND TIMER ON LED IS SWITCHED ON (m) NO NO “– –” APPEARS ON DISPLAY “X” HOURS ELAPSED FROM TIMER ON SELECTION YES FAN IS STARTED AT LOW SPEED UNIT IS ACTIVATED STOP COMPRESSOR IS STARTED * SUPPOSING THAT TIMER ON WAS SET TO ACTIVATE THE UNIT AFTER “X” HOURS. FAN SPEED LED AND OPERATING MODE ACCORDING TO SELECTION DONE.
8.3 Flow charts FAULTY SENSOR DIAGNOSIS COMBINED TIMER * START START FAULTY SENSOR TIMER DEACTIVATED (IF RUNNING) X>Y (DEACTIVATION SCHEDULED AFTER ACTIVATION) YES NO YES NO FAULTY SENSOR TIMER WORKING SEE TIMER ON FAULTY SENSOR TIMER ACTIVATED TEMP. <25°C OR TEMP.
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9 UNIT DISASSEMBLY Front panel removal Unscrew the six screws placed on unit back and remove the front panel. Control panel template removal Remove the control panel template levering on the two hooks placed in its lower part. In this way all the electrical and electronic parts of control panel can be reached and it is also possible do all checks and parts substitutions of the same panel.
9 UNIT DISASSEMBLY Electromechanical control removal Remove the plug-in switch knob, release the plastic tab and remove the switch end the board. Rear panel removal Remove the condensate tank in the rear of the unit. Unscrew the four side clamping screws, lift the back panel about 10 mm and finally remove it. At this point it is possible to make any check and/or service operation on the unit.
9 UNIT DISASSEMBLY Fan motor replacement Disconnect the polarized electronic connector and TH sensor. Using a screwdriver release the four plastic tabs that keep the half scroll of the fan in place. In this way it is possible to extract the motor from the rubber vibration isolators which are supporting it. If one or more plastic tabs of the half scroll of the fan are broken, the half scroll can be secured by similar screws to the ones used in the unit, during the re-assembly.
10 TROUBLESHOOTING Mod. 51AKM 006, 51AKM 06G, RTE 165F, RTE 165G, VTE 075F, VTE 075G Autodiagnostic In the event of malfunctions, a warning will be given automatically on the display.
10 TROUBLESHOOTING Mod. 51AKM 006, 51AKM 06G, RTE 165F, RTE 165G, VTE 075F, VTE 075G Trouble Action Remedy Unit does not work and both fan speed LEDs are blinking. Check the start capacitor. Replace start capacitor if necessary. Connect the fan motor directly to the supply. Replace the motor in case it does not work; if motor works replace the control PCB. Check the supply voltage. Call an electrician in case it is more than ±10% of the nominal voltage.
10 TROUBLESHOOTING Mod. 51AKM 006, 51AKM 06G, RTE 165F, RTE 165G, VTE 075F, VTE 075G Trouble Action Remedy Too much frost on cooler. Air filter is clogged. Clean air filter. Check fan speed. Replace motor if fan speed is too low. Outside air temperature is too low. Put the unit in Fan Only mode until outside coil is defrosted. Compressor relay contacts are welded. Replace power PCB. Cooler fins are bent and they partially close the air passage. Straighten the fins.
10 TROUBLESHOOTING Mod. 51AKM 006, 51AKM 06G, RTE 165F, RTE 165G, VTE 075F, VTE 075G Trouble Action Remedy The condensate tank is filled in Cooling Mode. Place the exhaust air duct in vertical position and pour a glass of water on the condensing coil. Connect the condensate drain pump directly to the supply. Replace the control PCB in case the motor works (the noise of the drained water can be easily heard). Replace the motor in case it does not work.
10.1 Component testing procedure Capacitor body To each terminal Capacitor To capacitor body Capacitor Fig. 1 Fig. 2 Capacitors Compressor Remove the plug from the socket and remove the cables from the capacitor. Discharge the capacitor, shortcircuiting its terminal with the blade of a screwdriver. Take an Ohmmeter and select the x 100 scale. Then connect the sensors of the Ohmmeter to two terminals of the capacitor.
OPTIONAL ACCESSORIES Window installation Wall installation 300 1200 11 30
11 OPTIONAL ACCESSORIES Filter kit Activated carbon filter Electrostatic filter 31 Filter frames
L010119H31 - 0397 Carrier S.p.A. - Via R. Sanzio, 9 - 20058 Villasanta (MI) Italy - Tel. 039/3636.1 The manufacturer reserves the right to change any product specifications without notice. Order No. 15173-74, March 1997. Supersedes Order No. (new).
