Answer:
When both the operation and economy lights are blinking on your Fujitsu mini-split, it typically signals a system malfunction that requires attention. In our experience, this combination of blinking lights often indicates a refrigerant issue, a sensor fault, or a blocked air filter. It’s essentially the system’s way of flagging that something isn’t operating as it should. Start by checking for dirty filters or obstructions around the indoor and outdoor units. If the issue persists, we recommend resetting the unit and contacting a certified technician to diagnose the problem.
More On: Fujitsu Mini-Split Operation and Economy Light Blinking
The blinking operation and economy lights are a diagnostic tool built into Fujitsu mini-splits, designed to alert you to specific system errors. The pattern of the blinks often corresponds to a fault code, which can help pinpoint the issue. For instance, a common reason for this alert is a refrigerant imbalance caused by a leak or a faulty compressor. In our experience, it’s also worth checking the indoor unit’s filters, as clogged filters can disrupt airflow and trigger the system to display an error.
Another scenario where this alert might occur is during extreme weather conditions. If the outdoor unit is obstructed by ice or debris, it could cause the system to overcompensate, leading to an error. Resetting the unit by turning it off at the breaker for a few minutes might clear temporary glitches. However, if the lights resume blinking after a reset, it’s essential to have the system inspected by a professional to prevent further damage.
