Gree GWH18AC-D3DNA1B

Running lamp C ooling lamp Heating lamp
Refrigerant s ys tem high press ure protection E1 blink 1 time
Anti-freezing protection E2 blink 2 tim es
Compres sor exhaus t high temperature protection E4 blink 4 times
AC over-current protection E5 blink 5 times
Com m unication failure between indoor unit and outdoor unit E6 blink 6 tim es
Anti-high temperature protection E8 blink 8 times
No feedback of indoor fan motor H6 blink 11 times
Jumper cap malfunction protection C5 blink 15 tim es
Indoor ambient sensor open or short circuit F1 blink 1 time
Indoor tube s ens or open or short circuit F2 blink 2 times
Outdoor ambient s ensor open or short circuit F3 blink 3 times
Outdoor tube s ensor open or short circuit F4 blink 4 times
Exhaus t s ensor open or short circuit F5 blink 5 times
Over load lim it / drop frequency F6 blink 6 times
Over current limit / drop frequency F8 blink 8 times
High exhaust temperature lim it / drop frequency F9 blink 9 times
Over voltage protection for PN PH blink 11 times
AC current detect circuit malfunction U5 blink 13 times
Compres sor reverse protection U4 blink 14 times
Over compressor phase current protection P5 blink 15 times
Inlet tube sensor m alfunction b5 blink 19 times
Outdoor DC fan m otor malfunction L3 blink 21 times
Outlet tube sensor malfunction b7 blink 22 times
Door m alfunction FC
Compres sor overload s ensor malfunction FE
Defrosting H1 blink 1 time
Static clearing dust protection H2 blink 2 times
Compres sor over load protection H3 blink 3 times
Sys tem abnormal protection H4 blink 4 times
IPM protection H5 blink 5 times
PFC p rotection HC blink 6 times
Compres sor loss step protection H7 blink 7 tim es
Heating anti-high tem perature drop frequency H0 blink 10 times
Startup failure Lc blink 11 times
Compres sor protection against los s of phas e U2 blink 12 times
Compres sor phase current detection circuit malfunction U1 blink 13 times
Compres sor demagnetization protection HE blink 14 tim es
Loading EEPROM malfunction EE blink 15 times
Communication failure between main board and driver board P6 blink 16 times
Capacitor charge malfunction PU blink 17 times
IPM sensor circuit m alfunction P7 blink 18 times
IPM high temperature protection P8 blink 19 times
PN voltage drop protection U3 blink 20 times
Low PN voltage protection PL blink 21 times
Current detect circuit m alfunction or Current sensor malfunction Pc
Compres sor loss of phas e protection Ld
Compres sor locked rotary protection LE
IPM over temperature lim it / drop frequency EU
4-wayvalve reversal abnorm al U7
Disconnection of the exhaus t temperature s ensor U8
AC power zero voltage detect error U9
Over tube temperature drop frequency FA
Anti-freezing limit / drop frequency FH
Name of malfunction
Display of double
eight code
Display of lamp
140
125
9.2.2 Blinking LED of Indoor/Outdoor Unit
45