Photovoltaic Multi VRF
26
Description of each stage of debugging progress
——
Debugging
code
Progress code
Status code
Code meaning and operation
method
Progress
LED1
LED2
LED3
Code
Display
status
Code
Display
status
Code
Display
status
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.
10_ Status
judgments of
outdoor valves
before startup
db
On
10
On
ON
On
Valves of ODU are being
inspected. Compressor will
start operation for 2min or so
and then stop. The opening
and closing status of outdoor
valves are as below:
Содержание GMV-Y120WL/A-T
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