Re: Chefman/Costco Indoor Pizza Oven

Quote from: dpd on April 09, 2024, 06:50:45 PMThanks for your input!

The thermal cutoff fuse (inline with main AC input) blew after 4 or 5 pizzas. Sorry didn’t take pics, but they were good!
Glowing red top element throughout the bake with a switch-on warmup anout 3 minutes before launch. Stone ~800F. Top sensor around 900F.
Under 120 seconds, nice leoparding, great bakes!

Then the fuse went with the top sensor around 900F. Doing its job I suppose

The oven uses PID control with mechanical relays, you can hear them click on and off and the ammeter reads full on or full off. When the oven has run a while, the duty cycle starts flipping at around 10s on / 20s off on top, the temp goes down to 650-700ish, and you never get a decently hot top element again. Until you cycle main power and reset, then you get some heat back for a few minutes again.

The mystery is: what is causing the oven to behave this way? There must be something in the PID programming that is either:

1) dumb parameters, or
2) a kludge…