User manual TOSHIBA RAS-18UKHP-ES3 SERVICE MANUAL

[. . . ] SVM-04007-(1) SERVICE MANUAL AIR CONDITIONER RAS-24UKHP-ES3 / RAS-24UAH-ES3 RAS-18UKHP-ES3 / RAS-18UAH-ES3 RAS-24UKP-ES3 / RAS-24UA-ES3 RAS-18UKP-ES3 / RAS-18UA-ES3 RAS-24UKHP-AS3 / RAS-24UAH-AS3 RAS-18UKHP-AS3 / RAS-18UAH-AS3 RAS-24UKP-AS3 / RAS-24UA-AS3 RAS-18UKP-AS3 / RAS-18UA-AS3 SPLIT WALL TYPE 18 Class (Heat pump model) 18 Class (Cooling only model) 24 Class May 2004 FILE NO. SPECIFICATIONS CONSTRUCTION VIEWS 2-1 2-2 2-3 2-4 Indoor Unit Outdoor Unit (RAS-24UAH-ES3, RAS-24UA-ES3, RAS-24UAH-AS3, RAS-24UA-AS3) Outdoor Unit (RAS-18UAH-ES3, RAS-18UAH-AS3) Outdoor Unit (RAS-18UA-ES3, RAS-18UA-AS3) RAS-24UKHP-ES3 / RAS-24UAH-ES3, RAS-24UKHP-AS3 / RAS-24UAH-AS3 RAS-18UKHP-ES3 / RAS-18UAH-ES3, RAS-18UKHP-AS3 / RAS-18UAH-AS3 RAS-24UKP-ES3 / RAS-24UA-ES3, RAS-24UKP-AS3 / RAS-24UA-AS3 RAS-18UKP-ES3 / RAS-18UA-ES3, RAS-18UKP-AS3 / RAS-18UA-AS3 Indoor Unit (RAS-24UKHP-ES3, RAS-18UKHP-ES3, RAS-24UKHP-AS3, RAS-18UKHP-AS3) Outdoor Unit (RAS-24UAH-ES3, RAS-24UAH-AS3) Outdoor Unit (RAS-18UAH-ES3, RAS-18UAH-AS3) Indoor Unit (RAS-24UKP-ES3, RAS-18UKP-ES3, RAS-24UKP-AS3, RAS-18UKP-AS3) Outdoor Unit (RAS-24UA-ES3, RAS-24UA-AS3) Outdoor Unit (RAS-18UA-ES3, RAS-18UA-AS3) RAS-24UKHP-ES3 / RAS-24UAH-ES3, RAS-24UKHP-AS3 / RAS-24UAH-AS3 RAS-18UKHP-ES3 / RAS-18UAH-ES3, RAS-18UKHP-AS3 / RAS-18UAH-AS3 RAS-24UKP-ES3 / RAS-24UA-ES3, RAS-24UKP-AS3 / RAS-24UA-AS3 RAS-18UKP-ES3 / RAS-18UA-ES3, RAS-18UKP-AS3 / RAS-18UA-AS3 3. WIRING DIAGRAM 3-1 3-2 3-3 3-4 4. SPECIFICATION OF ELECTRICAL PARTS 4-1 4-2 4-3 4-4 4-5 4-6 5. REFRIGERATION CYCLE DIAGRAM 5-1 5-2 5-3 5-4 6. CONTROL BLOCK DIAGRAM 6-1 RAS-24UKHP-ES3, RAS-18UKHP-ES3, RAS-24UKHP-AS3, RAS-18UKHP-AS3 6-2 RAS-24UKP-ES3, RAS-18UKP-ES3, RAS-24UKP-AS3, RAS-18UKP-AS3 7. OPERATION DESCRIPTION 7-1 7-2 7-3 7-4 7-5 7-6 7-7 7-8 7-9 Outline of Air Conditioner Control Description of Operation Circuit Hi POWER Mode High-Temperature Limit Control Low-Temperature Limit Control Defrosting Operation Auto Restart Function Filter Check Lamp Self-Cleaning function Safety Cautions Installation Diagram of Indoor and Outdoor Units Installation Indoor Unit Outdoor Unit Others -1- 8. INSTALLATION PROCEDURE 8-1 8-2 8-3 8-4 8-5 8-6 FILE NO. SVM-04007 9. TROUBLESHOOTING CHART 9-1 9-2 9-3 9-4 9-5 9-6 9-7 9-8 9-9 10-1 10-2 10-3 10-4 11-1 11-2 11-3 11-4 11-5 11-6 Troubleshooting Procedure Basic Check Items Primary Judgement Self-Diagnosis by Remote Control (Check Code) How to Diagnose Faulty Part Troubleshooting for Indoor Unit Troubleshooting for Wiring (Interconnect cable and Serial Signal Wire) Troubleshooting for P. C. Board Troubleshooting for Remote Control Indoor Unit Outdoor Unit (RAS-24UAH-ES3, RAS-24UA-ES3, RAS-24UAH-AS3, RAS-24UA-AS3) Outdoor Unit (RAS-18UAH-ES3, RAS-18UAH-AS3) Outdoor Unit (RAS-18UA-ES3, RAS-18UA-AS3) Indoor Unit (E - Parts Assy) Indoor Unit Outdoor Unit (RAS-24UAH-ES3, RAS-24UAH-AS3) Outdoor Unit (RAS-18UAH-ES3, RAS-18UAH-AS3) Outdoor Unit (RAS-24UA-ES3, RAS-24UA-AS3) Outdoor Unit (RAS-18UA-ES3, RAS-18UA-AS3) 10. [. . . ] This air conditioner has the structure designed to drain water collected from dew, which forms on the back of the indoor unit, to the drain pan. Therefore, do not store the power cord and other parts at a height above the drain guide. Wall Drain guide Space for pipes Fig. Installation place · A place which provides the spaces around the outdoor unit as shown in the left diagram. · A place which can bear the weight of the outdoor unit and does not allow an increase in noise level and vibration. · A place where the operation noise and discharged air do not disturb your neighbors. · When the outdoor unit is to be installed in an elevated position, be sure to secure its feet. (Refer to the table of TO CHARGE REFRIGERANT for detail. ) · An allowable height level is up to 8 m. · A place where the drain water does not raise any problem. 8-5-2. Cut the pipe with a pipe cutter. Obliquity Roughness Warp 90° Fig. · Projection margin in flaring : A (Unit : mm) A Die Pipe Fig. Install the outdoor unit without anything blocking the air discharging. When the outdoor unit is installed in a place exposed always exposed to strong wind like a coast or on a high storey of a building, secure the normal fan operation using a duct or a wind shield. In particularly windy areas, install the unit such as to avoid admission of wind. · A place where high-frequency waves are likely to be generated as from audio equipment, welders, and medical equipment. Outer dia. of copper pipe 6. 35 9. 52 12. 70 R410A tool used 0 to 0. 5 0 to 0. 5 0 to 0. 5 Conventional tool used 1. 0 to 1. 5 1. 0 to 1. 5 1. 0 to 1. 5 Imperial (wing nut type, conventional tool) Outer dia. of copper pipe 6. 35 9. 52 12. 70 <Tightening connection> Align the centers of the connecting pipes and tighten the flare nut as far as possible with your fingers. Then tighten the nut with a spanner and torque wrench as shown in the figure. R410A 1. 5 to 2. 0 1. 5 to 2. 0 2. 0 to 2. 5 Strong wind CAUTION · Do not apply excess torque. · Otherwise, the nut may crack depending on the conditions. Fig. of copper pipe 6. 35 mm 9. 52 mm 12. 70 mm Tightening torque 16 to 18 (1. 6 to 1. 8 kgf·m) 30 to 42 (3. 0 to 4. 2 kgf·m) 50 to 62 (5. 0 to 6. 2 kgf·m) AIR PURGE Evacuate the air in the connecting pipes and in the indoor unit using a vacuum pump. <Using a vacuum pump> Be sure to use a vacuum pump with counter-flow prevention function so that inside oil of the pump does not flow backward into pipes of the air conditioner when the pump stops. (If oil inside of the vacuum pump enters into the air conditioner, which use R410A, refrigeration cycle trouble may result. ) 1. [. . . ] Outdoor Unit (RAS-18UA-ES3, RAS-18UA-AS3) No. 1 Part name Common procedure Procedures 1) Stop the operation of the air conditioner and turn off its main power supply or remove the power supply cord. (2 screws 4 x 10L) 3) Remove 2 cord clamps (4 screws 4 x 22L) and disconnect the power supply cord and connecting cable after removing 6 screws on the terminal block and 1 ground screw on the electrical parts base. (8 scerws 4 x 10L) (Pull the front lower portion toward you, and pull out it upward to remove it. ) 5) Remove the back cabinet. (4 screws 4 x 10L) Remarks Remove 8 screws 4 x 10L 4 screws 4 x 22L 4 screws 4 x 10L 2 Running capacitor for compressor 1) Perform the common procedure 1 2) Remove the capacitor band. [. . . ]