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Kenmore elite oven slow to heat/not holding temperature 790.97503000.

Dan28

Premium Member
Joined
Nov 2, 2022
Messages
7
Location
Virginia
Model Number
790.97503000
Brand
Sears Kenmore
Age
6-10 years
Need some help with the Kenmore double oven electric. The top oven heats quickly and stays at temperature. The lower oven takes in excess of 20 minutes to reach 350 and once preheated it does not maintain the temperature. Other significant information is that the convection fan runs appropriately and broil element visibly cycles as called for in the preheat phase. Resistance across the bake and broil elements are 16 and 12 ohms respectively. It is reading 270 volts into the unit. What else can I check? Is there a way to verify the operation of the temp sensor? Anything else I can check? Thanks for any help you can give.

Dan
 

Dan28

Premium Member
Joined
Nov 2, 2022
Messages
7
Location
Virginia
Hi Jeff, I was able to check the temp sensor and it reads 1090 ohms so that appears to be good. Is there a way to test the board before throwing the $350 part at it?
 

jeff1

Appliance Tech - Moderator
Staff member
Joined
Oct 10, 2004
Messages
26,155
Location
Ontario, Canada
Is there a way to test the board

Normally we eliminate everything thing else until that is the item left....and then change it.
A volt meter can be used to see if that element is getting 220-240 volts AC when set for bake. No power and the control or wiring between are the prime suspects.

jeff sr.
 

Dan28

Premium Member
Joined
Nov 2, 2022
Messages
7
Location
Virginia
I hate to say this one was not a success story. Had a compound problem, not getting correct voltages/signal out of the control board relay so we replaced that. Some condensation had dropped into the board from what appears to be the fan. Problem was not fixed and it appears the logic module is also bad. I am $650 into the repair and the module is over $450 so I can't justify fixing a 10 year old oven for more than a new one costs. I hope some of that info helps.
 

pgjensen

Premium Member
Joined
Dec 26, 2022
Messages
5
Location
NC
I hate to say this one was not a success story. Had a compound problem, not getting correct voltages/signal out of the control board relay so we replaced that. Some condensation had dropped into the board from what appears to be the fan. Problem was not fixed and it appears the logic module is also bad. I am $650 into the repair and the module is over $450 so I can't justify fixing a 10 year old oven for more than a new one costs. I hope some of that info helps.
Thanks for the reply! Just tested the thermostats and those had 1088 ohms resistance so the easy fix is ruled out. I'll go through similar steps and see if I can narrow down the bad part and hope it's not too expensive.

This oven is over 15 years old to my knowledge so I won't put much money in it.
 

pgjensen

Premium Member
Joined
Dec 26, 2022
Messages
5
Location
NC
One difference between your issues and mine is the broiling top element is not visible orange/cycling during the pre heat phase from what I see. Convection runs perfectly. Broiling is fine too. Hmm...
 

pgjensen

Premium Member
Joined
Dec 26, 2022
Messages
5
Location
NC
Top elements both register 14ohms

Convection elements both register 22ohms

Bottom elements both register 0ohms which makes me think I'm either testing the wrong cable since I can't easily access them, or they are both bad. I do have this issue in both the top and bottom for regular baking only. The lower oven was acting up for the past few years so we have mainly been using the upper. We noticed the upper oven heating poorly the past couple months.

Sorry for blowing you up ha.
 

pgjensen

Premium Member
Joined
Dec 26, 2022
Messages
5
Location
NC
Turns out both bottom elements were bad after physical inspection. Gonna replace both for $300 and hope to get a few more years out if this thing.
 
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