Related Manuals for Toshiba RAS-137SAV-E
Summarization of Contents
1. SAFETY PRECAUTIONS
For general public use
Power supply cord specifications for outdoor unit.
CAUTION: New Refrigerant Air Conditioner Installation
Precautions for R410A refrigerant and installation.
CAUTION: Disconnecting the Appliance
Appliance connection to main power supply via circuit breaker.
DANGER: Installation and Maintenance
Warnings regarding authorized dealers and electrical work safety.
DANGER: HIGH VOLTAGE
Caution about high voltage circuits and touching PC board parts.
WARNING: General Precautions
Warnings against unit modification, improper installation, and electrical work.
CAUTION: Environment and Handling
Precautions for installation environment, handling sharp edges, and earthquake.
For Reference: Heating Operation
Note on potential issues with heating operation at low temperatures.
2. SPECIFICATIONS
2-1. Specifications
Detailed technical specifications for indoor and outdoor units.
2-2. Operation Characteristic Curve
Graphs showing current vs compressor speed for cooling and heating.
2-3. Capacity Variation Ratio According to Temperature
Graphs showing capacity ratio vs outdoor temperature.
3. REFRIGERANT R410A
3-1. Safety During Installation/Servicing
Safety precautions specific to R410A refrigerant handling.
3-2. Refrigerant Piping Installation
Guidelines for installing refrigerant piping, including materials and joints.
Joints
Details on flare and socket joints for piping.
3-2-2. Processing of Piping Materials
Procedures for processing piping materials before installation.
Flare Processing
Steps and dimensions for flare processing of copper pipes.
Flare Connecting Procedures and Precautions
Procedures and precautions for connecting flares.
3-3. Tools
3-3-1. Required Tools
Lists tools exclusive for R410A and general tools required.
3-5. Brazing of Pipes
3-5-1. Materials for Brazing
Types of brazing filler materials and their properties.
3-5-2. Flux
Reason for flux use and its functions.
Characteristics required for flux
Desired characteristics of flux for brazing.
Types of flux
Classification of flux types (noncorrosive, activated).
3-5-3. Brazing
Procedures for brazing to prevent oxidation.
4. CONSTRUCTION VIEWS
4-1. Indoor Unit
Exploded views and dimensions of the indoor unit.
4-2. Outdoor Unit
Exploded views and dimensions of the outdoor unit.
5. WIRING DIAGRAM
5-1. RAS-137SKV-E / RAS-137SAV-E
Wiring diagram for specific models.
5-2. RAS-167SKV-E / RAS-167SAV-E
Wiring diagram for specific models.
6. SPECIFICATIONS OF ELECTRICAL PARTS
6-1. Indoor Unit
List of electrical parts for the indoor unit.
6-2. Outdoor Unit
List of electrical parts for the outdoor unit.
7. REFRIGERANT CYCLE DIAGRAM
7-1. Refrigerant Cycle Diagram
Diagram illustrating the refrigerant flow and key components.
RAS-167SKV-E / RAS-167SAV-E
Refrigerant cycle diagram for specific models.
8. CONTROL BLOCK DIAGRAM
8-1. Indoor Unit
Block diagram of the indoor unit control system and remote controller.
RAS-167SKV-E
Control block diagram for the RAS-167SKV-E indoor unit.
8-2. Outdoor Unit (Inverter Assembly)
Block diagram of the outdoor unit's microcomputer and inverter.
9. OPERATION DESCRIPTION
9-1. Outline of Air Conditioner Control
Overview of the air conditioner's capacity-variable control system.
9-2. Operation Description
List of various operational descriptions.
9-3. Auto Restart Function
Description of the auto restart function.
9-4. Remote Controller and Its Fuctions
Details on the remote controller and its functions.
Operation control
Details on how the remote controller, indoor, and outdoor units interact.
Cooling/Heating operation
How cooling and heating operations are controlled.
AUTO operation
How the AUTO operation mode selects settings.
DRY operation
How DRY operation mode works based on temperature.
Indoor fan motor control
Control of indoor fan speed in cooling operation.
Indoor fan motor control
Control of indoor fan speed in heating operation.
Outdoor fan motor control
Control of outdoor fan motor speed based on conditions.
Capacity control
How cooling/heating capacity is adjusted by compressor revolution.
Current release control
Prevents inverter part troubles by controlling compressor speed.
Release protective control by temperature of indoor heat exchanger
Protective control based on indoor heat exchanger temperature.
Defrost control
Function to remove frost from the outdoor heat exchanger.
Louver control
Control of indoor unit air direction and swing.
ECO operation
Energy-saving operation mode.
Temporary operation
Temporary operation using the RESET button.
Discharge temperature control
Protective control based on discharge temperature.
Pulse Modulating valve (P.M.V.) control
Controls throttle amount of refrigerant in the cycle.
Self-Cleaning function
Minimizes mold/bacteria growth by drying fan.
Self-Cleaning function release
Procedures to cancel and set the self-cleaning function.
Remote-A or B selection
Separates remote control for multiple indoor units.
Short Timer
Timer settings for immediate unit start or maintenance.
FILTER Indicator
Indicator for filter cleaning reminder.
9-3-1. How to Set the Auto Restart Function
Steps to enable the auto restart function.
9-3-2. How to Cancel the Auto Restart Function
Steps to disable the auto restart function.
9-3-3. Power Failure During Timer Operation
How timer operation is affected by power failure.
9-4-1. Remote control and its functions
Identification of remote control buttons and indicators.
9-4-2. Operation of remote control
Basic operations using the remote control.
DRY OPERATION (COOLING ONLY)
Details of the DRY operation mode.
ECO OPERATION
Energy saving operation mode.
TEMPORARY OPERATION
Starting/stopping unit without remote control.
TIMER OPERATION
Setting and cancelling timers.
AUTO RESTART OPERATION
Setting and cancelling auto restart operation.
9-4-3. Name and Functions of Indications on Remote Controller
Explains symbols and indicators on the remote control display.
10. INSTALLATION PROCEDURE
10-1. Installation Diagram of Indoor and Outdoor Units
Diagrams showing placement and clearance for indoor/outdoor units.
10-2. Optional Parts, Accessories and Tools
Lists optional parts, accessories, and tools.
10-2-1. Optional Installation Parts
Lists optional parts for installation.
10-2-2. Accessory and Installation Parts
Lists standard accessories and installation parts.
10-2-3. Installation/Servicing Tools
Lists tools specific to R410A installation and servicing.
10-3. Indoor Unit
Installation specifics for the indoor unit.
10-3-1. Installation Place
Recommended locations for installing the indoor unit.
10-3-2. Drilling a Hole and Mounting Installation Plate
Procedures for drilling holes and mounting the installation plate.
10-3-3. Electrical Work
Requirements for electrical connections and wiring.
10-3-4. Wiring Connection
Steps for connecting the connecting cable to the indoor unit.
10-3-5. Piping and Drain Hose Installation
Procedures for piping and drain hose setup.
How to attach the drain cap
Steps to attach the drain cap.
How to attach the drain hose
Steps to attach the drain hose.
In case of right or left piping
Instructions for right or left piping installation.
Left-hand connection with piping
Instructions for left-hand piping connection.
CAUTION: Pipes and Cables
Cautions for binding pipes and cables, insulation.
10-3-6. Indoor Unit Installation
Steps for physically installing the indoor unit onto the mounting plate.
10-3-7. Drainage
Proper drainage setup for the indoor unit.
10-4. Outdoor Unit
Installation specifics for the outdoor unit.
10-4-1. Installation Place
Recommended locations for installing the outdoor unit.
10-4-2. Draining the Water
Procedures for draining defrost water from the outdoor unit.
10-4-3. Refrigerant Piping Connection
Steps for connecting refrigerant pipes, including flaring.
Tightening Connection
Procedures for tightening flare connections.
10-4-4. Evacuating
Procedure for evacuating air from the system using a vacuum pump.
Packed Valve handling precautions
Precautions for handling packed valves.
10-4-5. Wiring Connection
Steps for connecting wiring to the outdoor unit.
10-5. Test Operation
Final checks and testing procedures.
10-5-1. Gas Leak Test
How to perform a gas leak test.
10-5-2. Test Operation
Procedure for testing the unit's operation.
10-5-3. Auto Restart Setting
How to set the auto restart function.
10-5-4. Remote Controller A or B Selection
Setting remote control for multiple indoor units.
11. HOW TO DIAGNOSE THE TROUBLE
Precautions when handling the new inverter (3DV Inverter)
Safety warnings specific to the new inverter.
CAUTION: High Voltage
Safety warning about high voltage and circuit boards.
Precautions when inspecting the control section of the outdoor unit
Safety precautions for inspecting outdoor unit control section.
11-1. First Confirmation
11-1-1. Confirmation of Power Supply
Verifying power supply and breaker operation.
11-1-2. Confirmation of Power Voltage
Checking the input power voltage range.
11-1-3. Operation Which is not a Trouble (Program Operation)
Identifying normal operations that might be mistaken for faults.
11-2. Primary Judgment
11-3. Judgment by Flashing LED of Indoor Unit
Diagnosing issues based on indoor unit LED flashing patterns.
11-4. Self-Diagnosis by Remote Controller (Check Code)
11-4-1. How to Use Remote Controller in Service Mode
Steps to enter service mode and use check codes.
11-4-2. Caution at Servicing
Precautions when performing servicing after diagnosis.
Block distinction
Categorization of error codes by component.
11-5. Judgment of Trouble by Every Symptom
11-5-1. Indoor Unit (Including Remote Controller)
Troubleshooting for indoor unit symptoms like no power.
(3) Only the indoor motor fan does not operate
Troubleshooting for indoor fan motor not operating.
(4) Indoor fan motor automatically starts to rotate by turning on power supply
Troubleshooting for fan motor auto-rotation.
(5) Troubleshooting for remote controller
Troubleshooting steps for remote controller issues.
11-5-2. Wiring Failure (Interconnecting and Serial Signal Wire)
(1) Outdoor unit does not operate
Troubleshooting when outdoor unit does not operate.
(2) Outdoor unit stops in a little while after operation started
Troubleshooting for outdoor unit stopping after startup.
11-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E
Troubleshooting specific check codes related to wiring.
11-7. How to Diagnose Trouble in Outdoor Unit
11-7-1. Summarized Inner Diagnosis of Inverter Assembly
Diagnosis flowchart for the inverter assembly.
11-8. How to Check Simply the Main Parts
11-8-1. How to Check the P.C. Board (Indoor Unit)
Procedures for checking the indoor unit's P.C. board.
11-8-3. Indoor Unit (Other Parts)
11-8-4. Outdoor Unit
Checking components of the outdoor unit.
11-8-5. Checking Method for Each Part
Checking methods for electrolytic capacitors and diode blocks.
11-9. How to Simply Judge Whether Outdoor Fan Motor is Good or Bad
1. Symptom
Symptoms of outdoor fan motor issues.
12. HOW TO REPLACE THE MAIN PARTS
WARNING: General Repair Precautions
General safety warnings before performing repairs.
10-1. Indoor Unit
Procedures for replacing parts of the indoor unit.
Front panel
Procedure for removing and installing the front panel.
Electric parts box assembly
Procedure for removing and installing the electric parts box.
Horizontal louver
Procedure for replacing the horizontal louver.
Evaporator (Heat exchanger)
Procedure for replacing the evaporator.
Bearing
Procedure for replacing the bearing.
Fan motor
Procedure for replacing the fan motor.
Cross flow fan
Caution and procedure for reassembling the cross flow fan.
12-2. Microcomputer
Procedure for replacing the microcomputer.
12-3. Outdoor Unit
Procedures for replacing parts of the outdoor unit.
1. Detachment
Steps to detach parts from the outdoor unit.
2. Attachment
Steps to attach parts to the outdoor unit.
Front cabinet
Procedure for detaching and attaching the front cabinet.
Inverter assembly
Procedure for detaching and attaching the inverter assembly.
Control board assembly
Procedure for replacing the control board assembly.
Side cabinet
Procedures for detaching and attaching side cabinets.
Compressor
Procedure for replacing the compressor.
Reactor
Procedure for replacing the reactor.
Electronic expansion valve coil
Procedure for replacing the electronic expansion valve coil.
Fan guard
Procedure for detaching and attaching the fan guard.
TE sensor (outdoor heat exchanging temperature sensor)
Attachment of TE sensor.
TS sensor (Suction pipe temperature sensor)
Attachment of TS sensor.
TD sensor (Discharge pipe temperature sensor)
Attachment of TD sensor.
TO sensor (Outside air temperature sensor)
Attachment of TO sensor.
Replacement of temperature sensor for servicing only
Procedure for replacing temperature sensors.
13. EXPLODED VIEWS AND PARTS LIST
13-1. Indoor Unit (1)
Exploded view and parts list for the indoor unit.
Indoor Unit (2)
Exploded view and parts list for the indoor unit.
13-2. Outdoor Unit
Exploded view and parts list for the outdoor unit.
Location Part
Detailed parts list for the outdoor unit.
13-3. P.C. Board Layout
Location Part
Part numbers and descriptions for P.C. board components.
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