Gree GMV-224WM/B-X, Service Manual

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GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
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Chapter 5 Remote Control
Part 1 Engineering Debugger
1. Overview
With quick increase of comprehensive constructions and large buildings, central air conditioning systems
of the buildings are not only increased in number and diversified in model but also sparsely distributed,
which makes centralized management and maintenance difficult to realize. Gree Debugger, integrated
with electronic communication technology and PC software technology, helps monitor, control, and
debug central air conditioning units all round, making sparse distribution not an issue and realizing
centralized control and management. Managers, needless to go to the site to set and manage all units,
can perform running state query, unit start/stop, temperature adjustment, and other operations using a
PC, improving working efficiency and reducing manpower, material, and management input.
At present, Gree Debugger can be used to comprehensively monitor and control Gree multi units. So
long as users have a PC, they can monitor and control air conditioning units through the software. Gree
Debugger is an effective intelligent management tool for air conditioning systems and also a tool for
engineering setup and after-sale debugging. With Gree Debugger, users can debug air conditioners on
site, understand units' running state, and conveniently analyze units' health conditions, not only
improving users' working efficiency and reducing maintenance difficulty and cost but also improving
customers' service quality and speed.
2. System Networking
Gree Debugger is applicable to both single-system network and multi-system network. In a
single-system network, the software can control both IDUs and ODUs. In a multi-system network,
however, the software can control the master ODU only.
2.1 Composition of System Network
From the network topology, it can be seen that Gree debugging network is composed of three parts:
Control PC part in the monitor room, including Gree Debugger and USB Converter Driver installed in the
PCs.
USB data conversion part, mainly converts air conditioning units' communication mode into PC
recognizable mode. Devices include USB data converters and USB data lines.
Air conditioning unit part, mainly composed of air conditioning units, including ODUs, IDUs, and lines. If
the lines are not long enough, the transfer board accompanied with Gree Debugger can help connect the
lines together. In a single-system network, the converter can be connected to an IDU or an ODU. In a
multi-system network, however, the converter can be connected to a master ODU only.