## Causes of “F91”
– It is an error code displayed when there is some abnormality in the refrigeration cycle.
## How to Fix “F91”
– Perform a reset on the main unit
– Press the “Main Unit Reset” button on the remote control to reset the main unit power
– Alternatively, unplug the power plug from the outlet
– Reinsert the power plug or try turning the power back on and resume operation
#### Check the status of the timer lamp after turning the power back on
– Timer lamp is not flashing
– Operating normally
– Timer lamp is flashing
– Inspection/repair is needed
– For safety, unplug the power plug and contact the store or repair consultation desk
### Reference URL
Panasonic FAQ – “If the air conditioner main unit’s timer lamp is flashing and an error display ‘H**/F**’ appears” (https://jpn.faq.panasonic.com/app/answers/detail/a_id/9669/~/%E3%82%A8%E3%82%A2%E3%82%B3%E3%83%B3%E6%9C%AC%E4%BD%93%E3%81%AE%E3%82%BF%E3%82%A4%E3%83%9E%E3%83%BC%E3%83%A9%E3%83%B3%E3%83%97%E3%81%8C%E7%82%B9%E6%BB%85%E3%81%97%E3%81%A6%E3%80%81%E3%82%A8%E3%83%A9%E3%83%BC%E8%A1%A8%E7%A4%BA%E3%80%8Ch%2A%2A%EF%BC%8Ff%2A%2A%E3%80%8D%E3%81%8C%E5%87%BA%E3%81%9F%E3%82%89#gs=eyJndWlkZUlEIjoxMjEwMywicXVlc3Rpb25JRCI6MSwicmVzcG9uc2VJRCI6MTEsImd1aWRlU2Vzc2lvbiI6ImVNNm1SNWxxIiwic2Vzc2lvbklEIjoiZU02bVI1bHEifQ..)