Chigo 38B User Manual

1
CHIGO
Service mannal
Room airconditioner
Split Wall-Mounted Type
NOTE:
Before servicing the unit, please first read the service
manual and then contact with your service center if
meet problem

Chigo 38B Specifications

General

Brand	Chigo
Model	38B
Category	Air Conditioner
Language	English

Summary

1. Summary

3. Installation Precautions

3.1 Safety Precaution

Essential safety instructions to prevent injury and damage during installation.

3.2 Warning

Critical warnings related to installation procedures and component usage.

3.3 Installation Details

Self-Diagnosis Functions

Error Code Display

Table detailing self-check codes and their corresponding digital readouts.

6. Parameters

Table 6-1: Specifications

7. Wiring Diagrams

7.1 Indoor Unit Wiring

Electrical schematic diagrams for various indoor unit models.

7.2 Outdoor Unit Wiring

8. PCB Principle Charts

38 Section Schematic

65 Mitsubishi Main Chip Schematic

9. PCB Functions

Display Panel Functions

Cooling Operation Modes

Heating Operation Modes

Defrosting Modes

Intelligent Defrost

Explanation of the intelligent defrost process and conditions.

Outdoor PCB Defrost Control

How the outdoor PCB controls the defrosting cycle based on specific parameters.

Outdoor Sensor for Defrost

Failure Display

LED Lamp Display Codes

Table detailing LED indicators and their fault indications and solutions.

Failure Analysis (E3-E8)

10. Troubleshooting

Indoor Sensor Errors

Troubleshooting steps for indoor temperature sensor errors.

Indoor TP1 Sensor Error

Troubleshooting steps for indoor coil pipe temperature sensor errors.

Indoor Fan Motor Issues

Compressor Operation Issues

Remote Control Troubleshooting

Unit Not Responding to Remote

General Troubleshooting Flow

Unit Display & Operation Check