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Toyotomi TAN-A28IV User Manual

Toyotomi TAN-A28IV
44 pages
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SERVICE MANUAL
ROOM AIR CONDITIONER
TAN/TAG-A28IV
TAN/TAG-A32IV
TAN/TAG-A53IV
CONTENTS
SPECIFICATION .................................................................... 1
FUNCTIONS .......................................................................... 7
SERVICE FUNCTION EXPLANATION .................................. 9
OPERATION DETAILS......................................................... 10
TROUBLESHOOTING GUIDE ............................................. 16
PERFORMANCE CURVE DIAGRAM ..................................22
ELECTRIC CIRCUIT DIAGRAM .......................................... 26
SCHEMATIC DIAGRAM AND PCB’S .................................. 30
PARTS LIST (PCB) .............................................................. 40
SEMICONDUCTOR LEAD IDENTIFICATION...................... 51
SEMICONDUCTOR PIN FUNCTION................................... 55
THERMISTOR RESISTANCE CHART ................................. 60
EXPLODED VIEW (INDOOR UNIT) .................................... 68
EXPLODED VIEW (OUTDOOR UNIT) ................................ 71
PARTS LIST (INDOOR UNIT) .............................................. 73
PARTS LIST (OUTDOOR UNIT) .......................................... 74
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Toyotomi TAN-A28IV Specifications

General IconGeneral
Cooling Capacity2.8 kW
Heating Capacity3.2 kW
Power Supply220-240V, 50Hz
Energy Efficiency Ratio (Cooling)3.21
Energy Efficiency Ratio (Heating)3.61
RefrigerantR32
Weight (Indoor Unit)8.5 kg
TypeSplit Air Conditioner

Summary

FUNCTIONS

Remote Control Transmitter Functions

Details operation modes, airflow selection, timer settings, and negative ion features for the remote.

Indoor Unit Functions

Explains room temperature sensing, time delay safety, fan speed control, LED indicators, dry and deice operations.

Outdoor Unit Functions

Covers hot-start, anti-freezing, airflow direction, inverter control, and forced operation modes for the outdoor unit.

SERVICE FUNCTION EXPLANATION

Emergency and Test Operation

Describes how to perform emergency and test operations, including auto-selection of modes and releasing the operation.

Signal Interference Prevention

Provides instructions on preventing signal interference when multiple indoor units are used in the same room.

OPERATION DETAILS

Timer and Airflow Control

Explains the detailed operation of timer functions (ON, OFF, Sleep) and airflow direction adjustments.

Compressor Protection and Cooling Mode

Details the time delay safety function for compressor protection and the operation of the cooling mode.

Dry and Heating Mode Operations

Describes the operational characteristics and parameters for the dry and heating modes of the air conditioner.

Defrosting and Compressor Starting

Explains the defrosting operation for the outdoor unit heat exchanger and the compressor starting sequence.

TROUBLESHOOTING GUIDE

Indication Lamp Troubleshooting

Guides users through troubleshooting issues based on combinations of indicator lamp statuses on the indoor unit.

Troubleshooting Checks and Steps

Outlines specific checks, steps, and wiring diagrams for diagnosing and resolving various operational problems.

Electric Characteristics and Error Display

Details sensor electric characteristics and the method for displaying past errors using indicator lamps.

WIRING DIAGRAM

PERFORMANCE CURVE DIAGRAM

Remarks for Gas Pressure Check and Charging

Provides important notes and precautions for checking gas pressure and charging refrigerant.

ELECTRIC CIRCUIT DIAGRAM

THERMISTOR RESISTANCE CHART

Room Temperature Sensor Resistance

Lists resistance and voltage values for the room temperature sensor at various temperatures.

Heat Exchanger Sensor Resistance

Provides resistance and voltage data for the heat exchanger temperature sensor across a range of temperatures.

Defrost & Outdoor Temp Sensor Resistance

Details resistance and voltage readings for defrost and outdoor temperature sensors at different temperatures.

Discharge Temperature Sensor Resistance

Presents resistance and voltage tables for the discharge temperature sensor at various temperature points.

EXPLODED VIEW (INDOOR UNIT)

EXPLODED VIEW (OUTDOOR UNIT)

PARTS LIST (INDOOR UNIT)

PARTS LIST (OUTDOOR UNIT)

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