The F90 error code on a Panasonic air conditioner indicates a possible circuit problem from a defect in the outdoor PCB or failure in the compressor unit. It could also point to low refrigerant gas levels or coolant gas leaks. Most of the underlying causes of the F90 error merit a check from an HVAC professional, but it won’t hurt to do a round of troubleshooting on a circuit-related problem.
Resetting the circuit breakers and performing a manual reset on your Panasonic air conditioning unit might be enough to clear any residual electrical charges that may be behind the F90 error. Allowing an electrical fault to linger in your air conditioning system is risky, so address the error as soon as you can. For more electrical safety information, including handling circuit breakers in your home, the Energy Market Authority of Singapore suggests these safety practices.
Meanwhile, a refrigerant gas leak, which is instantly detectable because of the sweetish ether-like odor of coolant gas, necessitates an appointment with a service technician who will repair the damaged gas pipes.
Start troubleshooting the F90 error by turning off your Panasonic aircon, unplug it from the power outlet, and do an inspection of the outdoor sub-unit. Open the AC back cover and clean off any dirt that you find on the PCB mainboard, wiring system, and compressor. Check for any loose wiring jacks, frayed wires, or burnt terminals. After ensuring everything’s in good shape and normal looking, close up the AC back cover, plug the aircon back in, and turn it on. Hopefully, the F90 error code is no longer displaying. Otherwise, book an appointment with an HVAC technician.
Silverback Aircon has an expertly maintained collection of refurbished Panasonic aircon spare parts for prompt replacement of either your defective outdoor PCB or malfunctioning compressor, any of which may be behind the F90 error. We also have an established, fool-proof practice for repairing damaged Panasonic PCBs. Silverback Aircon does not simply replace a defective PCB or two, we install the entire circuit box with the complete set of PCBs matching the model of your condenser unit. For the Panasonic CU3S27MKZ condenser model, there are three types of PCBs–the control board, power board, and noise filter. For the Panasonic condenser model CSS9PKZW, only two PCBs–the control board and power board–are used. The table below summarizes the estimated costs associated with the parts that may be relevant to the F90 problem.
Additionally, if the persistent F90 error is caused by low refrigerant gas levels, Silverback Aircon has a gas top up servicing solution to the problem. Gas top up servicing is just one of the many offerings in Silverback Aircon’s comprehensive aircon servicing options. The table below shows the prices for refilling different types of refrigerant gases.
Consult with Silverback Aircon for free over Whatsapp to finally clear the F90 fault (or any other Panasonic aircon error code) from your Panasonic air conditioner as well as deal with any other aircon maintenance issue that you might have. Kindly note down the model number of your indoor unit (refer to the sticker attached to the fan coil unit) and the model number of your condenser unit (refer to the invoice sticker) before you call us; we need the information to properly diagnose the F90 error and give you a quote on the possible cost of repair and parts replacement. Call us today.
