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Toshiba RAS-10NKH User Manual

Toshiba RAS-10NKH
54 pages
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Toshiba RAS-10NKH Specifications

General IconGeneral
TypeSplit System
Cooling Capacity2.8 kW
Heating Capacity3.2 kW
Power Supply220-240V, 50Hz
RefrigerantR410A
Energy Efficiency Ratio (EER)3.21
Coefficient of Performance (COP)3.61
Indoor Unit Weight9 kg
Noise Level (Outdoor)50 dB(A)

Summary

2. CONSTRUCTION VIEWS

2.1 Indoor unit

Diagrams and dimensions of the indoor unit.

2.2 Outdoor unit

Exploded view and dimensions of the outdoor unit.

3. CAUTION IN INSTALLATION

3.1 Installation of indoor unit

Procedures and precautions for indoor unit installation.

3.2 Flaring

Detailed instructions and precautions for pipe flaring.

3.3 Pipe process points

Guidelines for pipe bending and connection.

5. SPECIFICATIONS OF ELECTRICAL PARTS

5.1 RAS-10NKH, 10NKH4 (Indoor unit)

Electrical parts for the indoor unit with specifications.

5.2 RAS-10NAH, 10NAH4 (Outdoor unit)

Electrical parts for the outdoor unit with specifications.

8. OUTLINE OF OPERATION

8.1 Indoor Unit Controls and Display

Explains display panel indicators and control panel operations.

9. REMOTE CONTROL OPERATIONS

9.1 Button Functions

Details the functions of various buttons on the remote control.

9.2 Display Indicators

Explains the display indicators on the remote controller.

10. REMOTE CONTROLLER HANDLING

10.1 Location, Mounting, and Batteries

Guidance on remote controller placement, mounting, and battery replacement.

11. OPERATION MODES

11.1 Automatic Operation

How the unit automatically selects cooling, heating, or fan modes.

11.2 Manual Mode Selection

Manual selection of heating, cooling, or fan only modes.

11.3 Dry Operation

Instructions for operating the unit in dry mode for humidity control.

12. TIMER OPERATION

12.1 Timer Setting and Cancellation

How to set, reserve, and cancel ON/OFF timers.

13. AIR FLOW DIRECTION ADJUSTMENT

13.1 Vertical Air Flow Adjustment

How to adjust the vertical louver for desired air flow direction.

13.2 Horizontal Air Flow and Swing

Adjusting horizontal grilles and automatic swing functions.

9. OPERATION CIRCUIT DESCRIPTION

9.1 FAN ONLY Operation Circuit

Description of fan-only mode operation and air volume.

9.2 COOL Operation Circuit

Description of cooling mode operation, fan control.

9.3 HEAT Operation Circuit

Description of heating mode operation, fan control, and louver movement.

9.4 ECONO. Mode Circuit

Explanation of the economy mode for quiet and mild operation.

9.5 Dry Operation Circuit

Details on dry mode for humidity control and compressor cycling.

9.6 AUTO Operation Circuit

How the unit selects modes based on room temperature.

10. CONTROL MECHANISMS

10.1 Load and Temperature Limit Controls

Mechanisms for current, high temperature, and antifreezing control.

10.2 Defrost Operation Control

Conditions and control for defrost operation and indicator lamp.

10. TROUBLESHOOTING CHART

10.1 Pre-checks and Good Operations

Initial checks, power, wiring, and misleading good operations.

10.2 Trouble Sources and Judgement

Primary judgement of trouble sources and indoor unit controller roles.

11. DIAGNOSIS AND SELF-DIAGNOSIS

11.1 Abnormal Spot Display and Judgement

Interpreting block displays for self-diagnosis and judging abnormal spots.

11.2 Remote Controller Self-Diagnosis

Procedures for self-diagnosis using the remote controller and service modes.

11.3 Self-Diagnosis by Check Codes

Using check codes and key operations for self-diagnosis.

12. TROUBLESHOOTING FLOWCHARTS

12.1 Power Cannot Be Turned On

Flowchart for troubleshooting when the unit does not operate at all.

12.2 Power Relay and Indoor Fan Issues

Flowcharts for power relay not operating or indoor fan not operating.

12.3 Compressor and Sensor Issues

Flowcharts for compressor not operating and sensor issues.

13. HOW TO CHECK COMPONENTS

13.1 Remote Control Check

Steps to check the remote control and its interaction with the indoor unit.

13.2 PC Board Checking

Steps to check the PC board for defects, voltage, and fuses.

13.3 Sensor Resistance and Timer Reduction

Checking sensor resistance values and reducing anti-restart timer.

14. EXPLODED VIEWS AND PARTS LIST

14.1 Indoor Unit Parts List

Exploded view and parts list for the indoor unit.

14.2 Outdoor Unit Parts List

Exploded view and parts list for the outdoor unit.

14.3 PC Board Components List

Detailed list of PC board components and their part numbers.

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