User manual TOSHIBA RAS-24UAH-ES-1 SERVICE MANUAL

[. . . ] SVM-03009 SERVICE MANUAL AIR CONDITIONER SPLIT WALL TYPE RAS-24UKHP-ES-1 / RAS-24UAH-ES-1 RAS-18UKHP-ES2 / RAS-18UAH-ES2 RAS-24UKP-ES-1 / RAS-24UA-ES-1 RAS-18UKP-ES2 / RAS-18UA-ES2 18 Class (Heat pump model) 18 Class (Cooling only model) 24 Class Feb. , 2003 FILE NO. SPECIFICATIONS CONSTRUCTION VIEWS 2-1 2-2 2-3 2-4 Indoor Unit Outdoor Unit (RAS-24UAH-ES-1, RAS24UA-ES-1) Outdoor Unit (RAS-18UAH-ES2) Outdoor Unit (RAS-18UA-ES2) RAS-24UKHP-ES-1 / RAS-24UAH-ES-1 RAS-18UKHP-ES2 / RAS-18UAH-ES2 RAS-24UKP-ES-1 / RAS-24UA-ES-1 RAS-18UKP-ES2 / RAS-18UA-ES2 Indoor Unit (RAS-24UKHP-ES-1, RAS-18UKHP-ES2) Outdoor Unit (RAS-24UAH-ES-1) Outdoor Unit (RAS-18UAH-ES2) Indoor Unit (RAS-24UKP-ES-1, RAS-18UKP-ES2) Outdoor Unit (RAS-24UA-ES-1) Outdoor Unit (RAS-18UA-ES2) RAS-24UKHP-ES-1 / RAS-24UAH-ES-1 RAS-18UKHP-ES2 / RAS-18UAH-ES2 RAS-24UKP-ES-1 / RAS-24UA-ES-1 RAS-18UKP-ES2 / RAS-18UA-ES2 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-ES-1, RAS-18UKHP-ES2 6-2 RAS-24UKP-ES-1, RAS-18UKP-ES2 7. OPERATION DESCRIPTION 7-1 7-2 7-3 7-4 7-5 7-6 7-7 7-8 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 Safety Cautions Installation Diagram of Indoor and Outdoor Units Installation Indoor Unit Outdoor Unit Others 8. INSTALLATION PROCEDURE 8-1 8-2 8-3 8-4 8-5 8-6 ­1­ FILE NO. 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-ES-1, RAS-24UA-ES-1) Outdoor Unit (RAS-18UAH-ES2) Outdoor Unit (RAS-18UA-ES2) Indoor Unit (E - Parts Assy) Indoor Unit Outdoor Unit (RAS-24UAH-ES-1) Outdoor Unit (RAS-18UAH-ES2) Outdoor Unit (RAS-24UA-ES-1) Outdoor Unit (RAS-18UA-ES2) 10. [. . . ] (The preset temperature on the remote control changes to [00]. ) 3) Press the [MODE] button while pressing the [CHECK] button, [B] is indicted at the right of the present temperature display. · To reset the switch to the [A] setting, press the [MODE] button again while pressing the [CHECK] button. A B FAN SWING FIX ON START/STOP MODE ECO TIMER AUTO Hi-POWER MEMO SET CLR [MODE] button OFF FILTER RESET CLOCK CHECK Fig. Confirm that the indoor unit can operate with the new setting. ­ 43-1 ­ FILE NO. Gas leak test Electric parts cover 8-7-3. Auto restart setting This product is designed so that, after a power failure, it can restart automatically in the same operating mode as before the power failure. D C Information Flare nut connections (Indoor unit) Valve stem cap connection The product was shipped with Auto Restart function in the off position. <How to set the auto restart> · Press and hold the TEMPORARY button for about 3 seconds. After 3 seconds, the electronic beeper makes three short beeps to tell you the Auto Restart has been selected. · To cancel the Auto Restart, follow the steps described in the section Auto Restart Function of the Owner's Manual. Flare nut connections (Outdoor unit) A B Service cap connection Valve stem cap connection Fig. 8-7-1 · Check the flare nut connections, valve stem cap connections and service port cap connections for gas leak with a leak detector or soap water. Test operation To switch the TEST RUN (COOL) mode, press TEMPORARY button for 10 sec. (The beeper will make a short beep. ) TEMPORARY button Fig. Troubleshooting Procedure : Follow the details of 9-2. If there is no trouble corresponding to 9-2, check whether or not there are faulty parts following 9-4. Incorrect cable connection between Indoor and outdoor units The indoor unit is connected to the outdoor unit with 4 cables. Check that the indoor and outdoor units have been properly connected with terminals assigned the same numbers. If the connectors are not properly connected, the outdoor unit will not operate normally, or OPERATION lamp and TIMER lamp will blink (5Hz). Program control The microcontroller operates as shown in Table 9-2-1 to control the air conditioner. If there are any operational problems, check whether or not the problems correspond to Table 9-2-1. If they correspond to the Table, they are not problems with the air conditioner, but they are indispensable operations to control and maintain the air conditioner properly. 9-2. Basic Check Items 9-2. 1 Power supply voltage The line voltage must be AC 220 ­ 240V. If it is not within this rage, the air conditioner may not operate normally. Table 9-2-1 No. 1 Operation of air conditioner When the main power supply is turned on, the OPERATION lamp on the indoor unit blinks. The indoor fan motor speed does not change in the Dry operation. [. . . ] (1 screw 4 x 10L) 3) Disconnect the lead wires from the capacitor terminal. 1) Perform the common procedure 1 2) Remove the fixing screw. (1 screw 4 x 10L) 3) Disconnect the lead wires from the capacitor terminal. 1) Perform the common procedure 1 2) Unlatch the relay and pull it upward. [. . . ]