H99 — Indoor operating unit freeze protection (Cooling)

Was bedeutet H99 ?

The unit has entered indoor freeze protection mode during cooling. This can be caused by issues with the indoor heat exchanger, a dirty air filter, or a short circuit in air circulation.

• Indoor heat exchanger issue
• Dirty air filter
• Air circulation short circuit

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Check the indoor heat exchanger.

2. 2

   Clean or replace the air filter.

3. 3

   Ensure there are no obstructions to air circulation.