Gree GC201808-III, Service Manual

Page: 138 / 362

GREE GMV5 HR HEAT RECOVERY UNITS
134
Progress Description for Commissioning Phases
——
Commissioning Code Progress Code Status Code
Meaning
Progress
LED1 LED2 LED3
Code
Display
Status
Code
Display
Status
Code
Display
Status
db On 09 On OC On
The system detects that
refrigerants are normal and
automatically enters the next
step.
10_Pre-startup ODU
valve status detection
db On 10 On ON On
Outdoor unit valves are being
opened.
db On 10 On U6 On
Outdoor unit valves have not
been completely opened.
db On 10 On OC On
Outdoor unit valves have been
properly opened.
11_Manually calculated
refrigerant perfusion
status
db On 11 On AE On
The refrigerant perfusion status is
manually calculated (appended
refrigerants must be accurately
calculated).
12_Unit commissioning
startup confirmation
db On 12 On AP Blinking
The system waits for a unit
commissioning startup
command.
db On 12 On AE On
The unit is set to
manually-calculated refrigerant
perfusion commissioning
operation status.
13_
—— —— —— —— —— —— No meaning.
14_
—— —— —— —— —— —— No meaning.
15_Cooling
operation by manual
perfusion
db On 15 On AC On
The system is in cooling-mode
commissioning operation (the
system automatically selects the
commissioning operation mode
without needing manual
settings).
db On 15 On
Corresponding
fault code
On
A fault occurs on the
cooling-mode commissioning
operation.
db On 15 On J0 On
A fault occurs on other modules
during the cooling-mode
commissioning operation.
db On 15 On U9 On
A fault occurs on ODU pipes or
valves.
db On 15 On XXXX/U8 On
The system detects pipe failure
of IDU. "XXXX" indicates the
project number of the faulty IDU.
The fault code "U8" is displayed
after three seconds. For
example, if a U8 fault occurs on
IDU 100, LED3 will circularly
display "01", "00" (two seconds
later), and "U8" (two seconds
later).