User manual TOSHIBA RAS-18GA-ES2 SERVICE MANUAL

[. . . ] SVM-06020 SERVICE MANUAL AIR CONDITIONER SPLIT WALL TYPE RAS-24GKHP-ES2 / RAS-24GAH-ES2 RAS-18GKHP-ES2 / RAS-18GAH-ES2 RAS-24GKP-ES2 / RAS-24GA-ES2 RAS-18GKP-ES2 / RAS-18GA-ES2 18 Class 24 Class May, 2006 FILE NO. SPECIFICATIONS CONSTRUCTION VIEWS 2-1 2-2 2-3 Indoor Unit Outdoor Unit (24 Class) Outdoor Unit (18 Class) RAS-24GKHP-ES2 / RAS-24GAH-ES2 RAS-18GKHP-ES2 / RAS-18GAH-ES2 RAS-24GKP-ES2 / RAS-24GA-ES2 RAS-18GKP-ES2 / RAS-18GA-ES2 Indoor Unit (RAS-24GKHP-ES2, RAS-18GKHP-ES2) Outdoor Unit (RAS-24GAH-ES2) Outdoor Unit (RAS-18GAH-ES2) Indoor Unit (RAS-24GKP-ES2, RAS-18GKP-ES2) Outdoor Unit (RAS-24GA-ES2) Outdoor Unit (RAS-18GA-ES2) RAS-24GKHP-ES2 / RAS-24GAH-ES2 RAS-18GKHP-ES2 / RAS-18GAH-ES2 RAS-24GKP-ES2 / RAS-24GA-ES2 RAS-18GKP-ES2 / RAS-18GA-ES2 RAS-B18NKPX / RAS-18N2AX RAS-24GKHP-ES2, RAS-18GKHP-ES2 RAS-24GKP-ES2, RAS-18GKP-ES2 Outline of Air Conditioner Control Description of Operation Circuit Hi POWER Mode High-Temperature Limit Control Low-Temperature Limit Control Defrosting Operation Auto Restar t Function Filter Check Lamp Self-Cleaning function QUIET Mode COMFORT SLEEP mode 3. WIRING DIAGRAM 3-1 3-2 3-3 3-3 4. SPECIFICATION OF ELECTRICAL PARTS 4-1 4-2 4-3 4-4 4-5 4-5 5. REFRIGERATION CYCLE DIAGRAM 5-1 5-2 5-3 5-4 5-4 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 -1- FILE NO. SVM-06020 8. INSTALLATION PROCEDURE 8-1 8-2 8-3 8-4 8-5 8-6 8-7 Safety Cautions Installation Diagram of Indoor and Outdoor Units Installation Indoor Unit Outdoor Unit How to Set Remote Control Selector Switch Others 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 9. TROUBLESHOOTING CHART 9-1 9-2 9-3 9-4 9-5 9-6 9-7 9-8 9-9 10. [. . . ] 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. After the piping has been connected to the indoor unit, you can perform the air purge together at once. · 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. 8-5-4 Half union Flare nut Externally threaded side Internally threaded side Use a wrench to secure. Use a torque wrench to tighten. Fig. 8-5-5 CAUTION · KEEP IMPORTANT 4 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) 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) Vacuum pump ­101 kPa (­76 cmHg) Handle Lo Charge hose (For R410A only) Connecting pipe Packed valve at liquid side Packed valve at gas side Service port (Valve core (Setting pin)) - 43 - Fig. SVM-06020 TO CHARGE REFRIGERANT Refrigerant No need to charge refrigerant Need to charge refrigerant 24 Class 15 m or les s Over 15 m up to 25 m (20g/m) 18 Class 15 m or les s Over 15 m up to 20 m (20g/m) 8-5-4. Remove the valve cover from the outdoor unit. Connect the connecting cable to the terminal as identified with their respective matched numbers on the terminal block of indoor and outdoor unit. When connecting the connecting cable to the outdoor unit terminal, make a loop as shown in the installation diagram of indoor and outdoor unit, to prevent water coming in the outdoor unit. Insulate the unused cords (conductors) from any water coming in the outdoor unit. Proceed them so that they do not touch any electrical or metal parts. <Stripping length of connecting cable> Terminal block <Packed valve handling precautions> · 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 (12. 70 mm) Liquid side (6. 35 mm) Service port 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) L N 1 2 3 Terminal screw Cord clamp Earth line Screw Cord clamp Hexagonal wrench is required. 4m m Power supply cord Connecting cable LN 10 12 3 10 10 70 70 10 80 60 Fig. [. . . ] 201 202 202 203 204 207 208 209 210 211 212 213 214 215 216 217 218 Part No. 43T00409 43T09386 43T09388 43T80306 43T80312 43T03010 43T03011 43T03012 43T09345 43T70309 43T21373 43T44376 43T47349 43T47350 43T49021 43T19322 43T49325 236 233 Location No. 219 220 221 222 223 224 226 227 228 229 230 231 232 234 234 235 236 Description FRONT PANEL ASSY GRILLE ASSY (18, 24GKHP) GRILLE ASSY (18, 24GKP) AIR FILTER (L) AIR FILTER (R) BODY; RIGHT BODY; LEFT HIDE; CLAW LOUVER-H HOSE ASSY; DRAIN STEPPING MOTOR REFRIGERATION ASSEMBLY PIPE; DELIVERY PIPE; SUCTION PIPE; SHIELD FIX-P-SENSOR SPRING - 71 - FILE NO. Outdoor Unit (RAS-24GAH-ES2) Location No. [. . . ]