User manual TOSHIBA RAS-18UKHP-ES4 SERVICE MANUAL

[. . . ] SVM-05011 SERVICE MANUAL AIR CONDITIONER SPLIT WALL TYPE RAS-24UKHP-ES4 / RAS-24UAH-ES4 RAS-18UKHP-ES4 / RAS-18UAH-ES4 RAS-24UKP-ES4 / RAS-24UA-ES4 RAS-18UKP-ES4 / RAS-18UA-ES4 18 Class (Heat pump model) 18 Class (Cooling only model) 24 Class May 2005 FILE NO. SPECIFICATIONS CONSTRUCTION VIEWS 2-1 2-2 2-3 2-4 Indoor Unit Outdoor Unit (RAS-24UAH-ES4, RAS-24UA-ES4) Outdoor Unit (RAS-18UAH-ES4) Outdoor Unit (RAS-18UA-ES4) RAS-24UKHP-ES4 / RAS-24UAH-ES4 RAS-18UKHP-ES4 / RAS-18UAH-ES4 RAS-24UKP-ES4 / RAS-24UA-ES4 RAS-18UKP-ES4 / RAS-18UA-ES4 Indoor Unit (RAS-24UKHP-ES4, RAS-18UKHP-ES4) Outdoor Unit (RAS-24UAH-ES4) Outdoor Unit (RAS-18UAH-ES4) Indoor Unit (RAS-24UKP-ES4, RAS-18UKP-ES4) Outdoor Unit (RAS-24UA-ES4) Outdoor Unit (RAS-18UA-ES4) RAS-24UKHP-ES4 / RAS-24UAH-ES4 RAS-18UKHP-ES4 / RAS-18UAH-ES4 RAS-24UKP-ES4 / RAS-24UA-ES4 RAS-18UKP-ES4 / RAS-18UA-ES4 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-ES4, RAS-18UKHP-ES4 6-2 RAS-24UKP-ES4, RAS-18UKP-ES4 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 Defrost Operation Auto Restart Function Filter Check Lamp Self-Cleaning function 7-10 QUIET Mode 7-11 COMFORT SLEEP mode -1- FILE NO. 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 Indoor Unit Outdoor Unit (RAS-24UAH-ES4, RAS-24UA-ES4) Outdoor Unit (RAS-18UAH-ES4) Outdoor Unit (RAS-18UA-ES4) Indoor Unit (E - Parts Assy) Indoor Unit Outdoor Unit (RAS-24UAH-ES4) Outdoor Unit (RAS-18UAH-ES4) Outdoor Unit (RAS-24UA-ES4) Outdoor Unit (RAS-18UA-ES4) 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 10. [. . . ] After passing the connecting pipe through the pipe hole, connect the connecting pipe to the auxiliary pipes and wrap the facing tape around them. CAUTION · Bind the auxiliary pipes (two) and connecting cable with facing tape tightly. In case of leftward piping and rear-leftward piping, bind the auxiliary pipes (two) only with facing tape. Indoor unit Slit (Body-right) Fig. 8-4-11 <Left-hand connection with piping> Bend the connecting pipe so that it is laid within 43 mm above the wall surface. If the connecting pipe is laid exceeding 43 mm above the wall surface, the indoor unit may unstably be set on the wall. When bending the connecting pipe, make sure to use a spring bender so as not to crush the pipe. Bend the connection pipe within a radius of 30 mm. Auxiliary pipes Connecting cable Installation plate Drain hose · Carefully arrange pipes so that any pipe does not stick out of the rear plate of the indoor unit. · Carefully connect the auxiliary pipes and connecting pipes to each other and cut off the insulating tape wound on the connecting pipe to avoid double-taping at the joint, moreover, seal the joint with the vinyl tape, etc. · Since dewing results in a machine trouble, make sure to insulate both the connecting pipes. (Use polyethylene foam as insulating material. ) · When bending a pipe, carefully do it not to crush it. ­ 40 ­ FILE NO. Swing the indoor unit to right and left to confirm that · Hole should be made at a slight downward slant on it is firmly hooked up on the installation plate. While pressing the indoor unit onto the wall, hook it Do not form the at the lower part on the installation plate. indoor unit toward you to confirm that it is firmly hooked up on the installation plate. Hook here 1 50 mm or more 1 Installation plate Do not put the drain hose end into water. Press (unhook) Do not put the drain hose end in the drainage ditch. 2 Hook Fig. Put water in the drain pan and make sure that the water is drained out of doors. When connecting extension drain hose, insulate the connecting part of extension drain hose with shield pipe. Shield pipe Fig. 8-4-13 · For detaching the indoor unit from the installation plate, pull the indoor unit toward you while pushing its bottom up at the specified parts. Drain hose Inside the room Extension drain hose Push Push Fig. 8-4-14 CAUTION Arrange the drain pipe for proper drainage from the unit. 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. [. . . ] (1 screw 4 x 10L) 3) Disconnect the lead wires from the capacitor terminal. (1 screw 4 x 10L) 3) Disconnect the lead wires from the capacitor terminal. (2 screws 4 x 10L) 3) Disconnect the lead wires from the relay terminal. 1) Perform the common procedure 1 2) Disconnect the lead wires from the P. C. [. . . ]