User manual TOSHIBA SATELLITE L955

[. . . ] OPERATION DESCRIPTION 7-1 7-2 7-3 7-4 7-5 7-6 7-7 7-8 7-9 8-1 8-2 8-3 8-4 8-5 8-6 8-7 8-8 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 Self-Cleaning function Safety Cautions Installation Diagram of Indoor and Outdoor Units Installation Indoor Unit Outdoor unit How to Set Remote Control Selector Switch How to Use Drain Pump Kit of Option Others ­1­ 8. 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 Parts 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 (SATELLITE L955UAH-ES4) Outdoor Unit (SATELLITE L955) Outdoor Unit (RAS-24UAH-ES4, RAS-24UA-ES4) Indoor Unit (E-Parts Assy) Indoor Unit Outdoor Unit (SATELLITE L955UAH-ES4) Outdoor Unit (SATELLITE L955) Outdoor Unit (RAS-24UAH-ES4) Outdoor Unit (RAS-24UA-ES4) 10. EXPLODED VIEWS AND PARTS LIST · This air conditioner is charged with HFC (R-410A) that does not deplete the Ozone layer. [. . . ] 8-4-21 <Condition for installation> · The unit must not decline more than 15 mm in either axis. 15 mm 390 mm or more 320 140 Floor Rear piping hole. hole Projection 15 mm or less 8 Mounting screw 4 x 25 s Clip anchor (local parts) 60 Fig. 8-4-20 CAUTION Failure to firmly install the unit may result in personal injury and property damage if the unit falls. · In case of block, brick, concrete or similar type walls, make 5 mm dia. · Insert clip anchors for appropriate Mounting screws 8. NOTE: · Secure four corners and lower parts of the Installation plate 1 with 6 to 8 mounting screws to install it. ­ 42 ­ FILE NO. Wiring connection · The piping direction can be the following 3 ways with <How to connect the connecting cable> the Drain hose. Terminal cover · Each piping direction should be connected with the Screws Flexible pipe ". Cord clamp Earth terminal Rear piping Side piping Fig. 8-4-23 · Cut or remove the determined direction slit or cover. Slit for upper piping Cover for side piping Cover for rear upper piping 1. Insert the connecting cable fully into the Terminal block and secure it tightly with the screw. · Wire type : More than 1. 5 mm2 (H07RN-F or 245 IEC66) or 1. 3 mm2 (AWG-16) Fig. 8-4-27 NOTE: Connect the earth line to the metallic part (i mark) located at the side of 3P terminal. AIR PURGE Evacuate the air in the connecting pipes and in the indoor unit using vacuum pump. 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) 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 inside oil of the vacuum pump enters into the air conditioner which adopts R-410A, a trouble of the refrigeration cycle may be caused. ) 1. Connect the charge hose from the manifold valve to the service port of the gas side packed valve. 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). Open fully the valve stem of the packed valves (both sides of Gas and Liquid). Securely tighten the caps on the packed valves. Compound pressure gauge Pressure gauge CAUTION · Do not apply excess torque, otherwise the nut may crack depending on the conditions. · Tightening torque of flare pipe connections The operating pressure of R-410A is higher than that of R-22 (Approx. It is therefore necessary to tighten firmly flare pipe connecting sections (which connect the indoor and outdoor units) up to the specified tightening torque. Incorrect connections may not only cause a gas leakage, but also damage the refrigerant cycle. Flare at outdoor unit side Fig. 8-5-4 -101kPa (-76cmHg) Half union Externally threaded side Flare nut Internally threaded side Handle Lo Charge hose (For R-410A only) Use a wrench to secure. [. . . ] (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 terminal. Running capacitor for compressor 3 4 Magnetic contactor Magnetic contactor Spark killer 5 Spark killer Running capacitor for fan motor - 75 - FILE NO. Outdoor Unit (RAS-24UAH-ES4, RAS-24UA-ES4) 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. (4 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 screwson on the terminal block and 1 ground screw on the electrical parts base. [. . . ]