H98 — Indoor high pressure protection (Heating)

What does H98 mean?

The unit has entered indoor high pressure protection mode during heating. 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

Click steps to track your progress.

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.