
When the H98 error code appears on a Panasonic microwave, it indicates a problem with the magnetron or a related component. The magnetron is the component that generates the microwave energy used to heat food. The issue could be with the magnetron itself or another component that affects its ability to function properly.
H98 is a fairly common error code on Panasonic microwaves. If you encounter this error, this guide will help you understand the potential causes and provide guidance on how to resolve them.
Symptoms of the H98 error code
When experiencing the H98 error code on your Panasonic microwave, you may notice the following symptoms:
- “H98” appears on the microwave display when you attempt to run it.
- The microwave won’t run at all.
- The microwave runs but stops after 20 or 30 seconds and doesn’t heat properly.
Causes of the H98 error code
The H98 error code on Panasonic microwaves is almost always related to an issue with the magnetron. However, several issues can affect the magnetron’s ability to function properly, resulting in the H98 error code, such as:
- A faulty magnetron
- A faulty inverter board
- A faulty door switch
- A power issue
- A temporary software glitch
Diagnosing the cause of the H98 error code
Diagnosing the exact cause of the H98 error code can be challenging and dangerous. Testing the magnetron and inverter board requires specialized tools and expertise, and it can expose you to high-voltage components that may retain a charge even when the appliance is unplugged.
As such, it is strongly recommended to have a professional diagnose the cause of the H98 error code. That said, you can safely test the door switches yourself to determine if they might be causing the H98 error.
How to fix the H98 Error Code
Here are several troubleshooting steps to address the H98 error code on your Panasonic microwave.
1. Reset the microwave
If you’re lucky, the H98 error on your microwave may be caused by a temporary glitch in the control system that can be resolved by resetting the appliance.
To reset your Panasonic microwave, unplug the device, wait a few minutes, and then plug it back in. If the error code returns, move on to the next solution.
2. Check the power supply
Ensure that the microwave is plugged into a functioning power outlet. To verify this, try plugging another device into the outlet to see if it works properly, or plug the microwave into a different outlet you know is functioning to see if this resolves the error.
Next, inspect the microwave’s power cord to ensure it is not damaged, worn, frayed, or split, and confirm that the plug’s prongs are not bent or loose. If you suspect an issue with the wall outlet or power cord, have a qualified electrician perform the necessary repairs.
Finally, make sure the microwave is plugged directly into a wall outlet, not into an extension cord, as this can cause a voltage drop that may lead to the H98 error.
3. Check the door switches
A faulty door switch may cause the H98 error code because it disrupts the proper flow of power to the magnetron and inverter circuit. You can check the door switches by following these steps:
- Unplug the microwave.
- Remove the screws securing the control panel in place, then gently pull it away from the microwave to expose the interior. Be cautious of any wires connected to the panel.
- Locate the three door switches to the left of the control panel opening, near the door latch mechanism.
- Remove and test each door switch one by one, not altogether.
- To remove a door switch, disconnect its wire connection and unscrew or unclip it from its mounting bracket.
- Inspect the switch for signs of burning or physical damage.
- Press the actuator button on the switch. It should make a distinct “click” sound. If not, replace the switch.
- You can also test the switches for continuity with a multimeter. Replace any that fail the continuity test.
4. Contact a professional
If the previous steps haven’t resolved the H98 error, it’s very likely due to either a faulty magnetron or a faulty inverter board. It is highly recommended that a professional perform these repairs, as they require advanced knowledge of microwaves and the safe handling of high-voltage components.
However, if you have advanced DIY skills or previous experience with microwave repairs, here are the general steps to follow:
Replacing the magnetron:
- Unplug the microwave.
- Safely discharge the high-voltage capacitor. (WARNING: Dangerous—attempt only if experienced.)
- Remove the microwave’s outer cover.
- Remove the screws securing the magnetron cover.
- Carefully disconnect any wires connected to the magnetron.
- Remove the mounting screws securing the magnetron to the microwave.
- Install the new magnetron in its place, reconnect any wires, reattach the magnetron cover, and reassemble the microwave.
Replacing the inverter board:
- Unplug the microwave.
- Safely discharge the high-voltage capacitor. (WARNING: Dangerous—attempt only if experienced.)
- Remove the microwave’s outer cover.
- Locate the inverter board, typically near the base of the microwave.
- Carefully disconnect all wires connected to the inverter board, noting their positions for reassembly.
- Remove the screws securing the inverter board to the microwave.
- Remove the faulty inverter board.
- Install the new inverter board in its place, secure it with screws, and reconnect all wires in their original positions.
- Reassemble the microwave and replace its outer cover.
Should I fix the H98 error code?
Fixing the H98 error code on a Panasonic microwave can often be nearly as expensive as purchasing a new microwave, especially when considering the cost of components and an appliance technician’s labor.
Both the magnetron and inverter board can be costly to replace when done by a professional. As a result, many people opt to purchase a new microwave instead of repairing the error.
However, if a faulty door switch causes this error, it is a relatively inexpensive and simple issue to resolve. In such cases, repairing the microwave is worth considering.

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