Mitsubishi Heavy Industries FDC155KXZEN1 User Manual

VRF INVERTER MULTI-SYSTEM AIR-CONDITIONERS
(OUTDOOR UNIT)
(Heat pump type)KXZ series
FDC121KXZEN1, 140KXZEN1, 155KXZEN1 (1 Phase)
FDC121KXZES1, 140KXZES1, 155KXZES1 (3 Phase)
SERVICE MANUAL
Manual No. '19 • KX-SM-318
• Note:
(1) Regarding the Indoor unit series, refer to the No. ’17 • KX-T-266 and ’18 • KX-T-281.

Mitsubishi Heavy Industries FDC155KXZEN1 Specifications

General

Cooling Capacity	15.5 kW
Heating Capacity	17.5 kW
Refrigerant	R32
Type	Split Type Air Conditioner
Power Supply	50Hz
Noise Level (Outdoor)	55 dB(A)

Summary

Operation Control Functions

Remote Control Operations

Details wired and wireless remote control operations and models.

System Control Logic

Outdoor Unit Control Logic

Troubleshooting Procedures

Troubleshooting Diagnosis Flowcharts

Guides users through diagnosing issues using flowcharts for various error codes.

Error Code Reference Guide

Lists and categorizes all error codes with corresponding page numbers for detailed troubleshooting.

Troubleshooting Specific Errors

Provides detailed countermeasures for specific error codes and anomalies.

Outdoor Unit PCB Replacement

Control PCB Replacement

Details the procedure for safely replacing the outdoor unit's control PCB.

Inverter PCB Replacement

Provides instructions for replacing the inverter PCB, including specific steps for different models.

Installation Safety and Procedures

Installation Safety Precautions

Highlights critical safety warnings and precautions for installation to prevent injury or damage.

Refrigerant Piping Work Procedures

Electrical Wiring Work

Test Operation Procedures

Check Operation Overview

Outlines the purpose and prerequisites for performing a check operation.

Cooling Test Run Procedure

Maintenance and Repair Procedures

PCB Replacement Guide

Details the procedure for safely replacing the outdoor unit's control and inverter PCBs.

Indoor Unit Disassembly

Outdoor Unit Disassembly Guide