H41
Panasonic Humidity / Steam Sensor Error

Microwave beeps and displays H41, may not start a cook cycle.

Advertisements

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Advertisements

Possible Causes

Failed humidity sensor, Disconnected humidity sensor harness, Contaminated sensor area with grease or steam residue

How to Fix / Troubleshooting

Safety: This fault is low-voltage and generally safe to inspect around the cavity, but do not remove the outer cabinet.

Steps:

  • Power reset: Unplug the microwave for 5 minutes, then plug back in.
  • Clean the cavity: Wipe the interior, especially around the top or side area where the humidity sensor window is located (often a small grill or opening). Use a mild detergent and a soft cloth; avoid soaking.
  • Dry thoroughly: Leave the door open for 30 minutes to allow moisture to evaporate.
  • Test sensor cooking: Try a sensor reheat or sensor cook program with a cup of water. If H41 returns, the sensor or its wiring is likely faulty.

Next step: If cleaning and reset do not help, the humidity sensor assembly should be tested and replaced by a technician.

Advertisements

Repair Difficulty

Medium 3/5

Required Part

Humidity Sensor
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements