An H98 code is a protection fault that triggers when the indoor unit is at risk of overheating, and it’s most commonly seen while a system is running in heating mode. It’s designed to stop the unit before internal temperatures or pressures climb too high.
This is generally an airflow problem rather than a serious mechanical fault, with restricted air movement through the indoor unit being the main trigger. A very warm room, or something blocking the unit’s air outlet or return, can have the same effect.
Send us the code and a photo of the display, and a Ford & Doonan technician will get back to you. Please don't reset the unit before you take the photo.
(08) 9331 8800