Gree GMV-24WL/C-T, Service Manual

Page: 103 / 150

GREE DC Inverter Side Discharge VRF
Ⅱ
for North America
100
Content
symbol
Division
symbol
C L E F J P
q
The main
body
conducts
cooling
Static pressure
setting
EVI operation
status setting
Compulsory
cooling mode
Dual heat
source water
emptying
-
Content
symbol
Division
symbol
U b d n y
Debugging C
Communication
malfunction
between IDU and
the receiving lamp
plate
Overflow
distribution of IP
address
- - -
Status
A
Long-distance
emergency stop
Emergency
stop of
operation
Limit operation - -
q - - - -
Working mode
of compressor
heating zone
2 Troubleshooting
Troubleshooting principle
(1) Communication malfunction
Communication
malfunction
Check whether indoor unit and
outdoor unit is power supplied
Energize indoor unit and
outdoor unit
Measure whether the
communication wire is in
normal
Replace communication
wire
NO
NO
Check whether the
communication wire between
indoor unit and outdoor unit is
correct
Connect the communication
wire for indoor unit and
outdoor unit correctly
NO
YES
YES