Panasonic · Air Conditioner

Panasonic Air Conditioner H98 error code

Difficulty: Easy · Cost: $0–$150 · Duration: 15–20m

The H98 error means your Panasonic air conditioner's indoor high-pressure protection has activated — the refrigerant pressure inside the indoor unit has exceeded the safe operating limit. This is a safety shutdown to protect the refrigerant circuit from damage. Common causes include a dirty air filter restricting airflow, blocked air vents, or a refrigerant circuit fault. Cleaning the filter and ensuring airflow is unobstructed resolves it in many cases.

Common causes

Indoor air filter is dirty or clogged restricting airflow across the heat exchanger
Indoor unit air intake or outlet vents are blocked by furniture or curtains
Refrigerant circuit fault causing abnormally high pressure
Ambient temperature is extremely high stressing the refrigerant circuit

How to fix it

1

Turn off the unit and remove and clean the indoor air filters
2

Make sure nothing is blocking the air intake or outlet of the indoor unit
3

Allow the unit to cool down for 15–20 minutes before restarting
4

If H98 keeps returning after cleaning the filter and clearing airflow contact a qualified technician to inspect the refrigerant circuit