User manual TOSHIBA RAS-18S2AH-ES SERVICE MANUAL

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Manual abstract: user guide TOSHIBA RAS-18S2AH-ESSERVICE MANUAL

Detailed instructions for use are in the User's Guide.

 [. . . ] SVM-09036

SERVICE MANUAL

AIR CONDITIONER
SPLIT WALL TYPE
RAS-18SKHP-ES / RAS-18S2AH-ES RAS-24SKHP-ES / RAS-24S2AH-ES RAS-18SKP-ES / RAS-18SA-ES RAS-24SKP-ES / RAS-24SA-ES

February,  2009

FILE NO. SPECIFICATIONS CONSTRUCTION VIEWS
2-1 2-2 Indoor Unit Outdoor Unit

3. 

WIRING DIAGRAM
3-1 RAS-18SKP-ES / RAS-18SA-ES,  RAS-24SKP-ES / RAS-24SA-ES 3-2 RAS-18SKHP-ES / RAS-18S2AH-ES RAS-24SKHP-ES / RAS-24S2AH-ES

4. 

SPECIFICATION OF ELECTRICAL PARTS
4-1 4-2 4-3 4-4 4-5 4-6 Indoor Unit (RAS-18SKP-ES,  RAS-24SKP-ES) Outdoor Unit (RAS-18SA-ES) Outdoor Unit (RAS-24SA-ES) Indoor Unit (RAS-18SKHP-ES,  RASP-24SKHP-ES) Outdoor Unit (RAS-18S2AH-ES) Outdoor Unit (RAS-24S2AH-ES)

5. 

REFRIGERATION CYCLE DIAGRAM
5-1 5-2 5-3 5-4 RAS-18SKP-ES / RAS-18SA-ES RAS-24SKP-ES / RAS-24SA-ES RAS-18SKHP-ES / RAS-18S2AH-ES RAS-24SKHP-ES / RAS-24S2AH-ES

6. 

CONTROL BLOCK DIAGRAM
6-1 RAS-18SKP-ES / RAS-18SA-ES,  RAS-24SKP-ES / RAS-24SA-ES 6-2 RAS-18SKHP-ES / RAS-18S2AH-ES RAS-24SKHP-ES / RAS-24S2AH-ES

­1­

FILE NO. SVM-09036

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 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 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

8. 

INSTALLATION PROCEDURE
8-1 8-2 8-3 8-4 8-5 8-6

9. 

TROUBLESHOOTING CHART
9-1 9-2 9-3 9-4 9-5 9-6 9-7 9-8 9-9

10.  [. . . ] of copper pipe 6. 35
12. 70

R410A 1. 5 to 2. 0
2. 0 to 2. 5

<Tightening connection> Align the centers of the connecting pipes and tighten the flare nut as far as possible with your fingers. Then tighten the nut with a spanner and torque wrench as shown in the figure. 

Strong wind

CAUTION
· Do not apply excess torque. · Otherwise,  the nut may crack depending on the conditions. 

Fig. Evacuating After the piping has been connected to the indoor unit,  you can perform the air purge together at once. AIR PURGE Evacuate the air in the connecting pipes and in the indoor unit using a vacuum pump. Do not use the refrigerant in the outdoor unit. For details,  see the manual of the vacuum pump. <Using a vacuum pump> 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 oil inside of the vacuum pump enters into the air conditioner,  which use R410A,  refrigeration cycle trouble may result. ) 1. Connect the charge hose from the manifold valve to the service port of the gas side packed valve. 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. 

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.  [. . . ] 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) Remove the fixing screw. (2 screws 4 x 18L) 3) Disconnect the lead wires from the terminal.  [. . . ]

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