User manual TOSHIBA RAS-24SA-ES2 SERVICE MANUAL

[. . . ] SVM-10049 SERVICE MANUAL AIR CONDITIONER SPLIT WALL TYPE RAS-24SKP-ES2 / RAS-24SA-ES2 RAS-24SKHP-ES2 / RAS-24S2AH-ES2 April, 2010 FILE NO. SPECIFICATIONS CONSTRUCTION VIEWS 2-1 2-2 Indoor Unit Outdoor Unit 3. WIRING DIAGRAM 3-1 3-2 RAS-24SKP-ES2 / RAS-24SA-ES2 RAS-24SKHP-ES2 / RAS-24S2AH-ES2 Indoor Unit (RAS-24SKP-ES2) Outdoor Unit (RAS-24SA-ES2) Indoor Unit (RASP-24SKHP-ES2) Outdoor Unit (RAS-24S2AH-ES2) RAS-24SKP-ES2 / RAS-24SA-ES2 RAS-24SKHP-ES2 / RAS-24S2AH-ES2 RAS-24SKP-ES / RAS-24SA-ES2 RAS-24SKHP-ES2 / RAS-24S2AH-ES2 Remote control Outline of Air Conditioner Control Description of Operation Circuit Description of Safety and Reliability Prevention Function One-Touch Operation Hi POWER Operation QUIET Operation ECO Operation COMFORT SLEEP Operation FILTER Check lamp Auto Restart Function Self-Cleaning Operation 4. SPECIFICATION OF ELECTRICAL PARTS 4-1 4-2 4-3 4-4 5. REFRIGERATION CYCLE DIAGRAM 5-1 5-2 6. CONTROL BLOCK DIAGRAM 6-1 6-2 7. OPERATION DESCRIPTION 7-1 7-2 7-3 7-4 7-5 7-6 7-7 7-8 7-9 7-10 7-11 7-12 ­1­ FILE NO. SVM-10049 8. INSTALLATION PROCEDURE 8-1 8-2 8-3 8-4 8-5 8-6 Safety Cautions Installation Diagram of Indoor and Outdoor Units Installation Indoor Unit Outdoor Unit Test Operation Troubleshooting Procedure Basic Check Items Primary Judgement Self-Diagnosis by Remote Control (Check Code) How To Diagnose Faulty Parts Troubleshooting for Indoor unit Troubleshooting for Wiring (Interconnect cable and Serial Signal Wire) Troubleshooting for P. C. Board Troubleshooting for Remote Control 9. TROUBLESHOOTING CHART 9-1 9-2 9-3 9-4 9-5 9-6 9-7 9-8 9-9 10. [. . . ] Connect the charge hose to the port of the vacuum pump. Open fully the low pressure side handle of the gauge manifold valve. Operate the vacuum pump to start evacuating. Perform evacuating for about 15 minutes if the piping length is 20 meters. (15 minutes for 20 meters) (assuming a pump capacity of 27 liters per minute. Then confirm that the compound pressure gauge reading is ­101 kPa (­76 cmHg). Close the low pressure side valve handle of gauge manifold. Open fully the valve stem of the packed valves (both side of Gas and Liquid). Remove the charging hose from the service port. Securely tighten the caps on the packed valves. Compound pressure gauge Pressure gauge Manifold valve Handle Hi (Keep full closed) Charge hose (For R410A only) Vacuum pump adapter for counter-flow prevention (For R410A only) Outer dia. of copper pipe 6. 35 mm 12. 70 mm Tightening torque 16 to 18 (1. 6 to 1. 8 kgf·m) 50 to 62 (5. 0 to 6. 2 kgf·m) · Tightening torque of flare pipe connections The operating pressure of R410A is higher than that of R22. It is therefore necessary to firmly tighten the flare pipe connecting sections (which connect the indoor and outdoor units) up to the specified tightening torque. Incorrect connections may cause not only a gas leakage, but also damage to the refrigerant cycle. Flare at indoor unit side Flare at outdoor unit side Fig. 8-5-5 Half union Flare nut Externally threaded side Internally threaded side Use a wrench to secure. Use a torque wrench to tighten. Fig. 8-5-6 CAUTION · KEEP IMPORTANT 5 POINTS FOR PIPING WORK (1) Take away dust and moisture (Inside of the connecting pipes. ) (2) Tight connection (between pipes and unit) (3) Evacuate the air in the connecting pipes using VACUUM PUMP. (4) Check gas leak (connected points) (5) Be save to fully open the packed valves before operation. -101 kPa (-76 cmHg) Handle Lo Charge hose (For R410A only) Vacuum pump Connecting pipe Packed valve at gas side Packed valve at liquid side Service port (Valve core (Setting pin)) Fig. SVM-10049 TO CHARGE REFRIGERANT 8-5-6. The supply voltage must be the same as the rated voltage of the air conditiner. Prepare the power source for exclusive use with the air conditioner. <Stripping length of connection cable> Terminal block Round type terminal Terminal screw Screw Earth line Cord clamp Power supply cord Cord clamp Connecting cable 60 Refrigerant No need to charge extra refrigerant Need to charge extra refrigerant 24 class 15 m or less Over 15 m up to 25 m (30 g/m) · Open the valve stem all the way out; but do not try to open it beyond the stopper. · Securely tighten the valve stem cap with torque in the following table: Gas side Gas side (12. 70 mm) Liquid side (6. 35 mm) Service port Tightening torque 50 to 62 N·m (5. 0 to 6. 2 kgf·m) 16 to 18 N·m (1. 6 to 1. 8 kgf·m) 9 to 10 N·m (0. 9 to 1. 0 kgf·m) A 4 mm Same as Gas side 10 10 <Packed valve handling precautions> LN Round type terminal 123 100 Earth line Power supply cord Connecting cable Fig. 8-5-8 Cable tie Power supply cord · Hexagonel wrench : A (Unit : mm) Hexagonal wrench is required. A Connecting cable Protective bush Fig. [. . . ] · Holding the set screw, install the cross flow fan so that flat area on shaft of the fan motor comes to the mounting hole of the set screw. · Perform positioning of the fan motor as follows: · When assembling the fan motor, the fan motor must be installed in such a way that the fan motor leads will be taken out is positioned at the bottom front. · After assembling the two hooking claws of the motor band (right) into the main body, position the fan motor, insert it, and then secure the motor band (right) using the two fixing screws. Remarks q ­ 71 ­ FILE NO. [. . . ]