Gree GMV-36WL/A-T(U), Manual

Page: 90 / 131

DC Inverter Side Discharge VRF
Ⅱ
for North America
88
07_ Detect
indoor
components
db On 07 On
Error
code
On
System detects error on
indoor components. XXXX
means the project code of
IDU with error. 3s later,
related error code will be
showed. For instance, if no.1
IDU has d6 and d7 errors,
then the LED3 digital tube
will show circularly
00,01,d5,d6,07,92,d6,d7
every 2s.
After errors are
eliminated, system will start
next step automatically. If
power is off during
troubleshooting, then restart
debugging from progress 01
after power is on.
db On 07 On OC On
No error on components of
IDU. 2s later, next step
starts.
08_ Confirm
preheated
compressor
db On 08 On UO On
Preheat time for compressor
is less than 8 hours. Display
will be as in the left until the
preheat time reaches 8
hours.
Press main board’s
SW7 button to confirm
manually
that the preheat
time has reached 8 hours.
Then start next step. (Note:
Compressor may get
damaged if it is started
without 8 hours of preheat
time)
db On 08 On OC On
Compressor has been
preheated for 8 hours. 2s
later, next step starts.
09_ Refrigerant
judgments
before startup
db On 09 On U4 On
System is lack of refrigerant
and display will be as in the
left.
Please cut off power of
IDU and ODU and check if
there is leakage on
pipeline.
Solve the leakage
problem and complement
refrigerant into the unit.
Then connect power and
restart debugging from
progress 01. (Note: Before
re-charging refrigerant, unit
must be power off in case
system starts progress 10
automatically.)
db On 09 On OC On
Refrigerant is normal and
unit will display as in the left
for 2s. Then next step starts.