June 6, 2008
On Friday, 3 Sivan, 5768, Rav Heinemann, Shlita discussed the recent Kol Koreh regarding raising or lowering temperatures on Yom Tov on ovens equipped with the Sabbath Mode feature.

Dear Readers,

We at the STAR-K have worked with numerous appliance companies to make modern appliances more kosher consumer friendly for Shabbos and Yom Tov. During this process we have, in many cases, eliminated lights, icons, tones, and digital displays, provided for timed bake without tones and icons, and temperature adjustment on Yom Tov. However, these companies have chosen to name this feature the Sabbath Mode, and we are concerned from a halachic point of view that there may be some misunderstanding as to the proper use of these ovens on Shabbos. We would therefore like to make some clarifications.

1. No adjustment to the temperature is permitted on Shabbos even in the Sabbath Mode.

2. All food must be fully cooked and placed in the oven before Shabbos. No food (cooked or non-cooked) may be placed in the oven on Shabbos to re-warm or cook. This is true regarding ovens, as well […]