H98 — Indoor high pressure protection (Heating)

What does H98 mean?

The system has detected high pressure in the indoor unit during heating operation. This can be caused by blocked airflow or system issues.

• Indoor heat exchanger is dirty
• Air filter is dirty
• Short circuit in air circulation
• Issues with refrigerant levels

Click steps to track your progress.

1. 1

   Clean the indoor heat exchanger.

2. 2

   Clean or replace the air filter.

3. 3

   Ensure there are no obstructions to the indoor unit's air circulation.

4. 4

   Check for proper refrigerant levels if comfortable and knowledgeable.