H16
Panasonic H16 Error Code – Outdoor CT Open Circuit
Air Conditioner · HIGH Severity
What This Error Means
Outdoor current transformer open circuit
Diagnostic & Repair Steps
1
Power Off
Switch off at breaker.
Switch off at breaker.
RESET
~2 min
2
Inspect Outdoor PCB
Check CT circuit for damage. ⚠️ Disconnect power first
Check CT circuit for damage. ⚠️ Disconnect power first
INSPECT
~15 min
3
Check IPM Module
Inspect power transistor module.
Inspect power transistor module.
INSPECT
~10 min
4
Replace Outdoor PCB
Replace if CT circuit is open.
Replace if CT circuit is open.
REPLACE
~30 min
5
Contact Panasonic Support
If issue persists.
If issue persists.
CHECK
~5 min
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