Error Code 16 Cooling Mode; Error Code 16 Heating Mode; Error Code 21 Cooling Mode; Error Code 11 Eeprom Fault - Friedrich Floating Air Pro-Premiere FPHW091 Service & Parts Manual

Error Code 16 Cooling Mode

Error Code 16 Heating Mode

Error Code 21 Cooling Mode

Error Code 11 EEPROM Fault

74
TROUBLESHOOTING
Error code 16 cooling mode
Anti-freeze protection indoor unit
Is indoor heat
exchanger iced up?
yes
Refrigeration system protection,check the
air inlet and outlet of indoor unit
Error code 16 heating mode
Overload protection indoor unite
Is indoor heat
exchanger overheating?
yes
Refrigeration system protection,check the air
inlet and outlet of indoor unit
Error 21 (cooling mode)
Outdoor coil anti-overload protection
Is the outdoor condensor
overheating?
no
Check the coil sensor of
outdoor unit right or not
yes
Change the outdoor control board
Error code11
Outdoor EEPROM
Fault
no
Check the coil
sensor right or not
no
Change the coil
sensor
no
Check the coil sensor of
indoor unit right or not
no
Change the coil sensor
yes
Refrigeration system protection,check
the air inlet and outlet of outdoor
unit
no
Change the coil sensor
no
Check if the EEPROM
is loose?
yes
Change the EEPROM
Fig. 710
yes
Change the indoor
board
yes
Change the indoor
board
reconnect the EEprom