H98
Panasonic H98 Error Code – Indoor High Pressure Protection
Air Conditioner · CRITICAL Severity
What This Error Means
Indoor high pressure protection activated
Diagnostic & Repair Steps
1
Check Air Filter
Dirty filter is primary cause of high pressure protection.
Dirty filter is primary cause of high pressure protection.
INSPECT
~5 min
2
Clean Air Filter
Remove and wash filter. Allow to dry.
Remove and wash filter. Allow to dry.
CLEAN
~15 min
3
Check for Airflow Short Circuit
Ensure discharged air is not recirculated back to inlet.
Ensure discharged air is not recirculated back to inlet.
INSPECT
~10 min
4
Check Refrigerant Charge
Overcharge can cause high pressure. ⚠️ Certified technician only
Overcharge can cause high pressure. ⚠️ Certified technician only
TEST
~20 min
5
Contact Panasonic Support
If error persists.
If error persists.
CHECK
~5 min
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