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lassele LRT-23H User Manual

lassele LRT-23H
89 pages
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Commercial
Upright Refrigerator & Freezer
Service Manual

Table of Contents

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lassele LRT-23H Specifications

General IconGeneral
Brandlassele
ModelLRT-23H
CategoryRefrigerator
LanguageEnglish

Summary

Safety Cautions During Service

Handling Electric Parts Safely

Precautions for exchanging or repairing electric parts, using rating parts, and ensuring wiring integrity.

Fire and Water Hazard Prevention

Measures to prevent fire from tracking/shorts and damage from water in electric parts.

Installation and Usage Safety

Ensuring proper assembly, stable installation, grounding, and safe outlet usage.

Part Identification - Main Assembly

LRT-771H Main Assembly Parts

List and diagram of main assembly parts for LRT-771H.

LFT-771H Main Assembly Parts

List and diagram of main assembly parts for LFT-771H.

LRT-1471H Main Assembly Parts

List and diagram of main assembly parts for LRT-1471H.

LFT-1471H Main Assembly Parts

List and diagram of main assembly parts for LFT-1471H.

LRT-72H Main Assembly Parts

List and diagram of main assembly parts for LRT-72H.

Wiring Diagrams

Wiring Diagram T23R

Circuit diagram for T23R models, showing electrical connections.

Wiring Diagram T23F

Circuit diagram for T23F models, showing electrical connections.

Wiring Diagram T49R

Circuit diagram for T49R models, showing electrical connections.

Wiring Diagram T49F

Circuit diagram for T49F models, showing electrical connections.

Wiring Diagram T72R

Circuit diagram for T72R models, showing electrical connections.

Wiring Diagram T72F

Circuit diagram for T72F models, showing electrical connections.

Electronic Control System

Freezer Control - Display Panel Usage

Instructions for using the display PCB panel for freezer control, including buttons and indicators.

Freezer Control - Function Table and Manual Defrost

Explains functions like Power On, COMP, FAN, BOX HEATER, Lamp, and defrost settings.

Freezer Control - Defrost and Heater Functions

Details on Defrost, PRE-COOL, HEATER ON, Resting Period, Forced Defrost, Self Check, Door Open Alarm.

Freezer Control - Sensor Checks and Condenser Alarm

Explains D-Sensor check, Condenser Alarm setup, and sensor types.

Refrigerator Control - Display Panel Usage

Instructions for using the display PCB panel for refrigerator control, including temperature settings.

Refrigerator Control - Function Table

Details functions like Power On, Normal Operation, Defrost Period, and Defrost System modes.

Refrigerator Control - Advanced Functions and Alarms

Covers Resting Period, FAN Off, HTR Control, Frost Prevent, Door Open Alarm, Vapor Fan Error, Condenser Alarm.

Control Modes - COMP Operation and AC Load Control

Explains COMP operation timing and AC load control sequence.

Control Modes - Forced Defrost and Mode Control

Details on forced defrost, mode selection, temperature adjustments, and defrost time settings.

Control Modes - Part Test, Error Check, and Version Change

Procedures for testing parts, checking errors, and changing versions.

Control Modes - Temperature Units, Cord Settings, and LED Checks

Covers unit conversion, cord settings, LED checks, PROM clear, Vapor Pan error, and temp check.

Control Modes - Condenser Alarm and Sensor Errors

Explains condenser alarm settings, S1 sensor errors, and lists sensor types.

Control Board Layout and Connections

Diagram showing the layout and connections of the main control board.

Error Code Table and Descriptions

Lists error codes, conditions, and their corresponding functions and status.

Sensor Description and Functions

Describes the function and color of different sensors (D-sensor, R-sensor, RT-sensor).

Troubleshooting - Error Checks

Error Codes and Status Display

Lists error codes (S1, Rt, D1, dF, cF, EH), their explanations, and unit status.

Error Codes - Hi Temp, E2PROM, Open Door, Vapor Pan

Lists error codes (EH, EEP, Edr, uFn), their explanations, and unit status. Also includes notes on compressor protector.

Service Diagnosis - Troubleshooting Chart

Compressor Issues Troubleshooting

Identifies causes and remedies for compressor not starting, overload, or intermittent operation.

Temperature and Defrost Problem Diagnosis

Addresses high/low cabinet temperature, defrost issues, and abnormal noise.

Fan and Relay Troubleshooting

Addresses fan issues, relay problems, and thermistor testing.

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