Fujitsu Technical Support 937-575-0380 866-952-8324

Fujitsu Mini-Splits Re: Toolbox Fujitsu Toolbox is an app that allows access to quick and easy diagnostic information. To utilize Toolbox: Search for and download the Fujitsu Toolbox App. After the initialization process, login using the following password: yk33fk45 Once on, enter the...

Fujitsu Mini-Splits Re: Diagnostic/Error Codes If you use a wired type remote control, error codes will appear on the remote control display. If you use a wireless remote control, the lamp on the photodetector unit will output error codes by way of blinking patterns. See the lamp...

Fujitsu Mini-Split Re: Error A1 Error Code A1 = High Compressor Discharge Temperature Also indicated on the control board by 10 Green flashes and 1 Orange flash. Qty Possible Causes: 3 Low Refrigerant Charge Bad Sensor CHECKOUT: 1. Check Unit...

Fujitsu Mini-Split Re: Error A5 Error Code A5 = Low Pressure Fault Also indicated on the control board by 10 Green flashes and 5 Orange flashes. Qty Possible Causes: Low Refrigerant Charge Bad Pressure Switch ? CHECKOUT: 1. Check Unit...

Operation: 10 blinks Timer: 1 blink Economy: continous *In most instances, you locate and identify error codes on mini-splits at the indoor unit operation/timer lights (minus certain controllers). Discharge Temp. Error: EEV VALVE NOT OPENING 2 LOW REFRIGERANT...