Error code reference
Panasonic Air Conditioner Error Code H98
Indoor high pressure protection (heating)
Indoor high pressure protection (heating) — indoor heat exchanger detecting very high temperature during heating operation; stored in memory, no Timer LED flashing.
First step from the service manual
Check the indoor unit intake air filter for dirt/blockage.
The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.
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Get the full diagnostic procedure for H98.
- Step-by-step tests with expected resistance, voltage, and continuity values
- Wiring diagram references and connector pinouts from the OEM service manual
- Verified part numbers when replacement is required
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