Split system not starting up for about 10 mins after turning on

something in inverter breaking down when hot and shorting out, cheaper to replace unit than inverter

H97, H98 or H99 mean that there's a problem with your inverter, magnetron, or digital programming circuit.

R

Is the internal cooling fan working when you cook?

If not, the magnetron will overheat, and the unit will draw excessive current.

Otherwise, I would suspect the inverter.

Due to the complexity and lethal voltages used and produced in inverters, I do not recommend that an inexperienced person work on repairing an inverter.

You can find an authorized Panasonic servicer here.
In Canada, you can find an authorized Panasonic servicer here.

The service manual is here.

You can order Panasonic parts & accessories from Encompass here or you can call them toll-free at 866-779-5835.

check the Melectron and inverter

I expect that you're operating in heating mode. When the temp outside is low, the outdoor unit will "frost over" and will need to initiate defrost cycle to remove this frost. At this time, the outdoor fan and indoor fan does not run. All you can do is wait for 6-12 minutes. If the unit provides no operation for an indefinite amount of time, call for service.
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If it stops after 7 seconds, it has a problem with the inverter.

If it stops at 16 seconds and is a sensor model, it probably has a defective humidity sensor.

If it stops after 22 seconds, that means the controller has detected a problem, usually a problem with the inverter, controller, magnetron, or a bad connection from one or the other.

Display codes H95, H97, H98 or H99 mean that there's a problem with your inverter, magnetron, or digital programming circuit.

That may be a loose connection in the wiring between the inverter, magnetron, and/or control board, or maybe one of those components has failed.

Due to the lethal voltages used and produced in inverters, I do not recommend that an inexperienced person work on these.

You can find an authorized Panasonic servicer here.

In Canada, you can find an authorized Panasonic servicer here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

All electronics work but microwave won't heat.

The kinds of components making that sound at their death are typically high power diodes and capacitors. If it is only a single component it wouldn't be expensive but the failure may have been initiated by another failure.
If you remove the housing and find no fuse to replace, you may want to consider giving yourself an early Xmas present; labor $ will likely be fairly high.

Tin foil or steel plates in a microwave will burn it out. I suspect it is or has burnt out. Never put anything steel in a microwave.

what was the problem in the beginning before replacing the power inverter ?? most of the main problem is the DISPLAY PANEL that needs to be replaced ( membrane circuit ) and to be honest with you , is not worth it to replace it cause the price you going to pay , you better off purchasing a new one . now days we call it THE DISPOSABLES MICROWAVES . hope this helps