S
Shannon LittleAug 29, 2025
What does H99 error mean on my Panasonic CS-RE18JKE Air Conditioner?
- JJennifer SantosAug 29, 2025
If your Panasonic Air Conditioner displays the error code H99, several issues could be the cause: * A clogged air filter in the indoor unit. You should clean or replace the air filter. * Dust accumulation on the indoor unit heat exchanger. Clean the heat exchanger. * An air short circuit. Fix any air short circuit issues. * A faulty indoor pipe temperature sensor. Test or replace the indoor pipe temperature sensor. * A faulty indoor unit PCB. Check the indoor unit PCB.