Fisher air conditioner error codes

Fisher air conditioner error codes

When the display panel on your Fisher air conditioner flashes strange numbers and letters (like E1, FO or F5) on the display and (or) the operation lamp is blinking, this means that the system is giving you an error code. Error codes are used by repairmen to diagnose the malfunction and repair the system. In many cases you may do it on your own with the help of the table below.

Fisher FSAI-Pro-91AE2 air error codes

Operation lamp Timer lamp Display LED STATUS
☆ 1 time X EO Indoor unit EEPROM parameter error
☆ 2 times X E1 Indoor / outdoor units communication error
☆ 3 times X E2 Zero crossing signal detection error(except FSAIF-Pro-181AE2)
☆ 4 times X E3 Indoor fan speed has been out of control
☆ 5 times X E4 Open circuit or short circuit of indoor room temperature T1 sensor
☆ 6 times X E5 Open circuit or short circuit of evaporator coil temperature T2 sensor
☆ 7 times X EC Refrigerant Leakage Detection
☆ 2 times O F1 Open circuit or short circuit of outdoor ambient T4 temperature sensor
☆ 3 times O F2 Open circuit or short circuit of condenser coil temperature T3 sensor
☆ 4 times O F3 Open circuit or short circuit of compressor discharge T5 temperature sensor
☆ 5 times O F4 Outdoor unit EEPROM parameter error
☆ 6 times O F5 Outdoor fan speed has been out of control
☆ 1 times PO IPM malfunction or IGBT over-strong current protection
☆ 2 times P1 Over voltage or over low voltage protection
☆ 3 times P2 High temperature protection of compressor top diagnosis and solution(Only FSAI-Pro-241AE2 model)
☆ 5 times P4 Inverter compressor drive error

Fisher FSPI-091B  air error codes

Error code Malfunction
EO Water Pump Malfunction
E1 High pressure protection of compressor
E3 Low pressure protection of compressor
E4 High discharge temperature protection of compressor
E5 Compressor overload or drive error
E6 Communication malfunction
E9 Water overflow protection
FO Indoor unit ambient sensor malfunction at air return opening
F1 Evaporator sensor malfunction
F2 Condenser sensor malfunction
F3 Outdoor unit ambient temperature sensor malfunction
F4 Discharge temperature sensor malfunction
F5 Ambient sensor malfunction on Displayer (or LED board)