Toshiba RAS-10SA-E, RAS-10SKX ECONO. Mode, Low-Temperature Limit Control Cooling Operation

Page 15

7-5. ECONO. Mode

When the ECONO. button is pushed, during COOL and AUTO operation, the OPERATION display is turned off and the ECONO. display is lit and the indoor unit operates quietly and mildly with controlling airflow.

7-5-1. Cooling

(1)In the ECONO. mode, the set temp. by the remote control is changed automatically as shown in Fig. 7-5-1.

(2)Fan speed LOW

(˚C)

 

 

 

 

 

 

Set temp.

 

 

 

 

is changed

 

+2

 

 

 

 

 

 

Set temp.

 

 

 

 

is changed

 

 

+1

 

 

 

 

Set temp.

0H

1H

2H

TIME

ECONO. button is pushed

Fig. 7-5-1

7-6. Low-Temperature Limit Control (Cooling Operation)

The microprocessor detects the indoor heat exchanger temperature so as to prevent freezing up the indoor heat exchanger.

Control is performed as shown in Fig. 7-6-1.

Heat exchanger

 

temperature

Compressor Outdoor fan

 

(˚C)

ON

7

Less than 5˚C continues

 

5

for 5 minutes

OFF

Fig. 7-6-1

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Contents R C O Contents Troubleshooting Flowcharts What to be Prechecked FirstPrimary Judgement of Trouble Sources RAS-10SK-E/10SA-E RAS-10SKX/10SAX Cooling SpecificationsCondition JIS C9612-1994 Temperature Cooling Indoor Unit Construction ViewsRAS-10SA-E RAS-10SAX Outdoor UnitMain P.C. Board Wiring DiagramParts name Type Specifications Specifications of Electrical PartsRAS-10SK-E / RAS-10SA-E RAS-10SKX / RAS-10SAX Refrigerant Cycle DiagramAUTO, COOL, DRY, FAN only MICRO-COMPUTER Block DiagramM3/h Operation DescriptionsFAN only Operation Cool OperationLouver Control DRY OperationTemporary Auto Auto OperationECONO. Mode Low-Temperature Limit Control Cooling OperationCooling Auto Restart Function How to Set the Auto RestartCase of Power Failure during the Timer Operation How to Cancel the Auto RestartSafety Cautions For general public use Installation ProcedureUK Plugs and Sockets etc Safety Regulations SI Number Attach Installation Diagram of Indoor and Outdoor UnitsInstallation Installation PartsOptional Parts Mounting the installation plate Installation placeCutting a Hole and Mounting Installation Plate Remote controlElectrical Work When the installation plate is directly mounted on the wallTaking out the power cord Wiring ConnectionHow to remove the front cabinet How to open the screw capHow to install the front cabinet on the indoor unit Stripping length of connecting cableLeft-hand connection with piping Piping and Drain Hose InstallationCase of rightward piping Case of downward pipingDrainage Indoor Unit InstallationStrong wind Tightening connection Refrigerant Piping ConnectionVacuum Pumping FlaringA5 mm hexagon wrench is required Packed Valve Handling PrecautionsGas Leak Test Auto Restart SettingHow to set the Auto Restart OthersIncorrect Cable Connection between Indoor and Outdoor Units Troubleshooting ChartPower Supply Voltage What to be Prechecked FirstOperation of air-conditioner Description Misleading but Good Operations Program Controlled OperationPrimary Judgement of Trouble Sources Role of Indoor Unit ControllerBlock display Selecting ordinary mode Self-diagnosis with remote controlOperating key Indication after operation Self-diagnosis by check codesCondition Code Status Troubleshooting Flowcharts Power can not be Turned on No Operation at AllPreliminary checks Power can not be Turned on after Replacing Indoor PC Board Checking ProcedureOutdoor Unit does not Operate Only Compressor does not Operate Only Outdoor Fan does not Operate Only the Indoor Fan does not Operate Check procedureThere is no beep from Main PC board part How to Check the PC BoardOperating precautions Inspection proceduresProcedure Check Point Symptom Causes Top View Bottom View PC Board LayoutSensor How to Reduce the Operation Time of the Anti-Restart TimerIndoor Unit RAS-10SK-E, RAS-10SKX Part ReplacementPart name Procedure Remarks Microcomputer RAS-10SK-E, RAS-10SKX Outdoor Unit RAS-10SA-E, RAS-10SAX OFF Part Description Exploded Views and Parts ListIndoor Unit Capillary Tube