Gree XK55, Owner'S Manual, Page: 47 / 49

Wired Controller XK55
43
Error
Code
Content Error Code Content
Ud
Grid-connection driver board
error
Cn
Indoor and Outdoor Network Error
of Mode Exchanger
Un
Communication error between
grid-connection driver board and
master controller
Cy
Communication Error of No Master
in Mode Exchanger
Uy
PV module overheating
protection
— —
7.4 Table of Status Codes
Error Code Content Error Code Content
A0 Unit is waiting for debugging Ay Shielding status
A1
Check the compressor operation
parameters
n3 Compulsory defrosting
A2 After-sales Refrigerant Reclaim q5
Setting of ordinary units and high
sensible heat units
A3 Defrosting q7 Select degree Celsius or Fahrenheit
A4 Oil return q8
Discharge low temperature
protection revision valueb
A5 Online Testing q9 Setting of defrosting mode
A8 Vacuum-pumping Mode qL Setting of static pressure
A9 Operate in Setback Function qE EVI Operating Mode
AH Heating qF System compulsory cooling mode
AC Cooling qP PV GMV Unit export area setting
AF Fan qU Grid voltage system configuration