Gree GMV-Pdm450W/NaB-M

DC INVERTER MULTI VRF SERVICE MANUAL
T1/R410A/50Hz
( GC201107 -
)
CENTRAL AIR CONDITIONERS

Gree GMV-Pdm450W/NaB-M Specifications

General

Brand	Gree
Model	GMV-Pdm450W/NaB-M
Category	Inverter
Language	English

Summary

5 PIPING DIAGRAM

5.1 Piping diagram of GMV-Pdm224 WNaB-M,GMV-Pdm280 WNaB-M

Illustrates the refrigerant piping layout for specific outdoor unit models.

2 WIREDLESS REMOTE CONTROLLER

3 WIRED REMOTE CONTROLLER

3.2 Wired Controller XK02

5.4 Network Topological Diagram

5.5 Installation and Debugging

5.5.1 Installation

Covers the general installation steps for the smart zone controller.

5.5.1.3 Preparation and Connection of the Communication Line

Explains how to prepare and connect communication lines.

5.5.1.4 Installation

Provides step-by-step installation instructions for the smart zone controller.

5.5.2 Debugging and Viewing the Port No. and the Indoor Unit Address

5.6 Attachment

Error code list

7 ENGINEERING DEBUGGING

3 STEPS OF ENGINEERING DEBUGGING

3.1 Preparation before Debugging

3.3 Debugging

4 MAIN PARAMETERS AND REFERENCE VALVES FOR DEBUGGING

5 COMMON TROUBLES DURING DEBUGGING

Addresses common communication issues and their troubleshooting steps.

5.1 Communication

Addresses common communication issues and their troubleshooting steps.

5.2 System

Provides troubleshooting steps for system-related issues.

5.2.1 Discharge temp of system is abnormal.

Details troubleshooting for abnormal discharge temperature.

5.2.2 Abnormal System Pressure

Provides troubleshooting steps for abnormal system pressure.

MAINTENANCE

1 TROUBLE SHOOTING

Lists common troubleshooting steps and error displays.

1.1 Trouble Display of Indoor Unit

Explains error codes and their descriptions for indoor unit displays.

1.2 Trouble Display of Mainboard LED of Outdoor Unit

Describes the troubleshooting information from outdoor unit mainboard LEDs.

2 FLOW CHART OF TROUBLESHOOTING

2.1 High-pressure Protection

Details the troubleshooting steps for high-pressure protection errors.

2.2 Low-pressure Protection

Outlines the troubleshooting steps for low-pressure protection errors.

2.3 Exhaust Temperature Protection

Describes the troubleshooting process for exhaust temperature protection.

2.4 Communication Failure

Provides steps to troubleshoot communication failures between units.

2.5 Temperature sensor Trouble

Details troubleshooting procedures for temperature sensor errors.

2.6 Sensor Trouble

Covers troubleshooting for various sensor issues.

1) High-voltage sensor error

Guides troubleshooting for high-voltage sensor errors.

2) Low-voltage sensor error

Provides troubleshooting steps for low-voltage sensor errors.

2.7 No energization to the unit and mainboard

Details troubleshooting steps when the unit or mainboard has no power.

2.8 The AC contactor does not pull in

Explains troubleshooting steps when the AC contactor fails to engage.

2.9 Typical troubleshooting (E5) for DC frequency conversion drive board

Provides typical troubleshooting steps for E5 errors related to DC frequency conversion.

2.10 E5 Protection

Details troubleshooting steps for E5 protection errors.

2.11 PFC Protection

Outlines troubleshooting procedures for PFC protection errors.

2.12 IPM Protecion

Details troubleshooting steps for IPM protection errors.

2.13 Trip

Explains troubleshooting steps related to tripping faults.

2.14 Superheat Protection of Radiator

Provides troubleshooting steps for superheat protection of the radiator.

2.15 DC Overvoltage Protection

Details troubleshooting steps for DC overvoltage protection errors.

6 AFTER-SALES EMERGENCY MEASURES

7 DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS

7. 1 Outdoor Unit

8 EXPLODED VIEWS AND PART LIST