Panasonic · Microwave error code
Unlock what this code means, its causes, tests and parts
Full library + AI assistant for $34.90, one time.
Get lifetime accessOnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.
Guide · MicrowaveNo heat means the high-voltage circuit is not producing microwaves: HV fuse, HV diode, HV capacitor, magnetron, HV transformer, a door switch, or (on inverter models) the inverter board. Every internal test is high-voltage work for trained techs only, with the cord unplugged and the HV capacitor discharged and verified.
Guide · MicrowaveConfirm with a water test on High. Then rule out a low power setting and low line voltage, since a small voltage drop cuts output a lot. An aging magnetron is the most common part cause; poor connections and a failing thermal protector also show up.
Component test · MicrowaveThe HV diode works with the HV capacitor to double the transformer voltage for the magnetron. It is made of many junctions in series, so an ordinary meter only shows it is not shorted. A shorted diode is a classic cause of no heat with a loud hum.
Panasonic · Microwave
E01
Fault - stop using
Panasonic · Microwave
H95
No microwave oscillation (magnetron/inverter)
Panasonic · Microwave
H96
High-voltage protection fault
Panasonic · Microwave
H97
Microwave generation fault
Panasonic · Microwave
H99
Magnetron / inverter circuit failure
Panasonic · Microwave
HOT / HOT INSIDE WAIT
Cavity too hot for auto programs