microwave sometimes trips RCD

[goofy gorilla]

Hi I got a kenwood k30css13 microwave, works fine heating food up, however when I try to heat up a frozen pizza , the rcd keeps tripping, can't see anything obvious inside the microwave, cleaned it up inside bit still trips the rcd...is ot knackered? Time for a new one?
Ta

 

[JohnD]

is it a combi microwave; and does the RCD trip when you use the grill/oven element rather than microwave alone?

 

[goofy gorilla]

is it a combi microwave; and does the RCD trip when you use the grill/oven element rather than microwave alone?

Yes, exactly trips only when I use grill/oven....works fine with just microwave..

 

[JohnD]

It's quite common for those heating elements to break down with age and trip RCDs.

In many cases a replacement element is a plug-in part and can be replaced if you have a screwdriver

Search utube with your make and model number and there may be a how-to-do-it.

Replacement elements are widely available from appliance spares suppliers.