Question about Jenn-Air JJW8530C Expressions Collection Dual Single Oven
We need to replace the thermostat , can you tell us how? Thanks, Lee
Ignore the chowder-heads who think a 1970's Jenn-Air Drop-In Downdraft Range has self diagnostic codes. The oven thermostat has a copper tube that goes from the control knob all the way to the right upper wall of the oven. That contains a fluid that expands a bellows in the control. The knob adjusts a sprung teeter-totter to remove the power from the element when the desired temperature is reached. Sometimes a controlled poor temperature control because it is gummy, sometimes the fluid system has malfunctioned, and rarely the mechanical teeter totter or electrical contacts have failed. You can clean a gummy control with an electrical or electronics spray cleaner from an auto parts chain store or an online vendor. Use some paper toweling around the control to soak up the greasy solvent. Do follow the directions below for replacement to gain access to the bottom of the control and to move the control down from its installed position before attempting to clean it. Electronics Cleaner sprayed carelessly can remove the markings from the control panel and the number wheels of the clock. (BTW if your clock is stopped its rarely burned out, just gummed up and stalled. it can be removed and opened up and carefully degreased using cotton swabs and it will run again. The place to degrease is the gears closest to the round metal can clock motor, and when necessary inside the clock motor can. Don't touch the clock's number wheels for anything, the white paint can weaken with age and wipe off as if it only holds on by habit. The motor can be stalled indefinitely without damaging itself so it should be able to start up again when powered, it has very little force until it's multiplied by the gear train, so it's usually stalled by the early gears. If the clock wheel gearing is gummy enough to stall it when it's time to shift a digit or turn over multiple digits I suggest trying to use a thin cooking oil on a cotton swab to dissolve the grease and swab it away before trying anything more aggressive that is harder to control and may find its way onto a wheel face more easily, The timer gears are only engaged when the timer is running, resolve any gummed timer and chime gear problems after the clock runs correctly.)
To replace the oven temperature control;: Disconnect the power, and make sure it's off, you'll be working where you could touch a live wire, Open the oven door and remove the 4 screws holding the black cover under the controls. Remove the oven temperature knob, remove the nut holding the control to the panel. Migrate the existing control down to where you can shift the wires one at a time to the new control. You should be able to see the path the oven temperature probe follows. If you find you need to remove the control panel to thread it It's better to wiggle the drop-in out a bit to get to the screws left and right than to disconnect the flexible exhaust sleeve to move the range freely, because the exhaust can be a bit of doing to reconnect - mainly because you'll notice it's a greasy mess that has to be cleaned. Withdraw the old probe and install the new one. If the stand-off clips on the oven wall are missing or damaged they have to be replaced, it can;t just dangle. Close the wire tray and turn the power back on.
Posted on Jul 19, 2019
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