Discuss

Oven not preheating after accidental shorting element

 in

Oven Repair (including Ranges and Cooktops)

. "

My Bosch electric oven will no longer pre-heat properly after the bake element was accidentally shorted when a metal cover

..."
 
 
Register | FAQ's | New Posts | Today's Posts | Extras
Appliance Repair Forum > Appliance Repair Help > Oven Repair (including Ranges and Cooktops) » Oven not preheating after accidental shorting element

Post New Thread  Reply By reading any content on this site you agree to AppliancePartsPros.com, Inc. disclaimer and Terms of Use.
 
LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 08-14-2013, 08:33 PM
Junior Member
 
Join Date: Aug 2013
Posts: 4
cjlogan@gmail.com is on a distinguished road
Default Oven not preheating after accidental shorting element
Model Number: HES345U   Brand: Bosch   Age: 5 - 10 years   

Appliance Parts from AppliancePartPros.com


My Bosch electric oven will no longer pre-heat properly after the bake element was accidentally shorted when a metal cover that is part of the back panel was placed inside the cover and connected one of the 220 power terminals to one side of the bake element.

When pre-heating, the oven will only go up to about 280F, then stays at that temp. I have not tried verifying that is the actual temp with an oven thermometer; however, I have tried baking a banana bread and it would not cook as if it was set too low.

I can use the broil element to heat the oven, then turn off the broil element and turn the bake element back on to 350F. The temp will read somewhere around 450F at first, but will eventually go down.

With the power off, I have disconnected the bake and broil elements and tested the resistance of them with a multimeter. The bake element was 28 ohms and the broil element was 17 ohms.

The connector between the power and the bake element was partially melted, but I bought a new one and replaced it.

I was leaning towards replacing the bake element until I tested its resistance. It doesn't seem really high; however, it is definitely higher than the broil element. Lastly, I don't see any damage on the control board.

Any suggestions?


Related Models
Amana HET-480 RANGE- S/C S/I DDRAFT GAS
Amana HEU-516 RANGE- S/C S/I DDRAFT GAS
Magic Chef HF309-2 HOOD
Magic Chef HF309-3 HOOD
Magic Chef HF309-4 HOOD
Frigidaire HF30M Frg(v3) / Range Vent Hood
Magic Chef HF30R-1 HOOD
Magic Chef HF30R-1A HOOD
Magic Chef HF369-2 HOOD
Magic Chef HF369-3 HOOD
Magic Chef HF369-4 HOOD
Frigidaire HFA180FM1D Kel(v1) / Chest Freezer
Frigidaire HFA180FM2D Kel(v2) / Chest Freezer
Frigidaire HFP158DM1W Kel(v2) / Chest Freezer
Frigidaire HFP158DMOW Kel(v1) / Chest Freezer
Frigidaire HFS156AM3W Kel(v1) / Chest Freezer
Frigidaire HFS156SM2W Kel(v2) / Chest Freezer
Frigidaire HFS156SM4W Kel(v3) / Chest Freezer
Frigidaire HFS156SM5W Kel(v1) / Chest Freezer
Frigidaire HFS158DM1W Kel(v1) / Chest Freezer
Frigidaire HFS158DMOW Kel(v2) / Chest Freezer
Frigidaire HFS158FM1W Kel(v1) / Chest Freezer
Frigidaire HFS158FM2W Kel(v2) / Chest Freezer
Frigidaire HFS158FM3W Kel(v3) / Chest Freezer
Frigidaire HFS158FM7W Kel(v1) / Chest Freezer
Frigidaire HFS158FM8W Kel(v1) / Chest Freezer
Frigidaire HFS180EM1W Kel(v1) / Freezer
Frigidaire HFS180EM2W Kel(v2) / Freezer
Frigidaire HFS204DM1W Kel(v3) / Chest Freezer
Frigidaire HFS204DMOW Kel(v3) / Chest Freezer
Frigidaire HFS204FM1W Kel(v1) / Chest Freezer
Frigidaire HFS204FM2W Kel(v1) / Chest Freezer
Frigidaire HFS204FM3W Kel(v2) / Chest Freezer
Frigidaire HFS204FM4W Kel(v3) / Chest Freezer
Frigidaire HFS204FM5W Kel(v1) / Chest Freezer
Frigidaire HFS208SM4W Kel(v1) / Chest Freezer
Frigidaire HFS230DM0W Kel(v4) / Chest Freezer
Frigidaire HFS230DM1W Kel(v5) / Chest Freezer
Frigidaire HFS230DMOW Kel(v4) / Chest Freezer
Frigidaire HFS260SM4W Kel(v2) / Chest Freezer
Frigidaire HFS262DM1W Kel(v1) / Freezer
Frigidaire HFS262FM1W Kel(v1) / Chest Freezer
Frigidaire HFS262FM5W Kel(v1) / Chest Freezer
Amana HG2090 DRYER- GAS
Amana HG2260 WASHER-TOP LOADING
Amana HG2490 WASHER-TOP LOADING
Amana HG2980 WASHER-TOP LOADING
Amana HG3009 WASHER-TOP LOADING
Amana HG4009 WASHER-TOP LOADING
Amana HG4080 DRYER- GAS
Amana HG4109 WASHER-TOP LOADING
Amana HG4209 WASHER-TOP LOADING
Amana HG4280 DRYER- GAS
Amana HG4360 WASHER-TOP LOADING
Amana HG4390 DRYER- GAS
Amana HG4490 DRYER- GAS
Amana HG4509 WASHER-TOP LOADING
Amana HG5009 DRYER- GAS
Amana HG5390 WASHER-TOP LOADING
Amana HG6009 DRYER- GAS
Amana HG6360 WASHER-TOP LOADING
Amana HG6380 DRYER- GAS
Amana HG6490 WASHER-TOP LOADING
Amana HG6494 WASHER-TOP LOADING
Amana HG6660 WASHER-TOP LOADING
Amana HG7009 DRYER- GAS
Amana HG7290 WASHER-TOP LOADING
Amana HG9260 WASHER-TOP LOADING
Amana HG9280 WASHER-TOP LOADING
Maytag HGD4300TQ0 29" GAS DRYER
Maytag HGD4400TQ0 29" GAS DRYER
Thermador HGSI42TS 
Thermador HGSW36TS 
Maytag HJ61201JRT ELECTRIC WATER HEATER
Maytag HJ61202JRT ELECTRIC WATER HEATER
Maytag HJ6301JLS ELECTRIC WATER HEATER
Maytag HJ6301JLSCSA ELECTRIC WATER HEATER
Maytag HJ6301JRT2 ELECTRIC WATER HEATER
Maytag HJ6301JRT2CSA ELECTRIC WATER HEATER
Maytag HJ6302JLS ELECTRIC WATER HEATER
Maytag HJ6302JLSCSA ELECTRIC WATER HEATER
Maytag HJ6302JRT2 ELECTRIC WATER HEATER
Maytag HJ6302JRT2CSA ELECTRIC WATER HEATER
Maytag HJ630NORT GAS WATER HEATER
Maytag HJ630NORT2 GAS WATER HEATER
Maytag HJ630NORT2CGA GAS WATER HEATER
Maytag HJ630NORTCGA GAS WATER HEATER
Maytag HJ630PORT GAS WATER HEATER
Maytag HJ630PORT2 GAS WATER HEATER
Maytag HJ630PORT2CGA GAS WATER HEATER
Maytag HJ630PORTCGA GAS WATER HEATER
Maytag HJ6401JLS ELECTRIC WATER HEATER
Maytag HJ6401JLSCSA ELECTRIC WATER HEATER
Maytag HJ6401JRS ELECTRIC WATER HEATER
Maytag HJ6401JRSCSA ELECTRIC WATER HEATER
Maytag HJ6401JRT2 ELECTRIC WATER HEATER
Maytag HJ6401JRT2CSA ELECTRIC WATER HEATER
Maytag HJ6401JRT2CSAF ELECTRIC WATER HEATER
Maytag HJ6401JRT2F ELECTRIC WATER HEATER
Maytag HJ6401JT4W ELECTRIC WATER HEATER
Maytag HJ6401JT4WCSA GAS WATER HEATER
Maytag HJ6402JLS ELECTRIC WATER HEATER
Maytag HJ6402JLSCSA ELECTRIC WATER HEATER
Maytag HJ6402JRS ELECTRIC WATER HEATER
Maytag HJ6402JRSCSA ELECTRIC WATER HEATER
Maytag HJ6402JRT2 ELECTRIC WATER HEATER
Maytag HJ6402JRT2CSA ELECTRIC WATER HEATER
Maytag HJ6402JRT2CSAF ELECTRIC WATER HEATER
Maytag HJ6402JRT2F ELECTRIC WATER HEATER
Maytag HJ6402JT4W ELECTRIC WATER HEATER
Maytag HJ6402JT4WCSA GAS WATER HEATER
Maytag HJ640NBDS GAS WATER HEATER
Maytag HJ640NBDSCGA GAS WATER HEATER
Maytag HJ640NBDVT GAS WATER HEATER
Maytag HJ640NBDVTCGA GAS WATER HEATER
Maytag HJ640NBPDT GAS WATER HEATER
Maytag HJ640NBPDTCGA GAS WATER HEATER
Maytag HJ640NBRS GAS WATER HEATER
Maytag HJ640NBRSCGA GAS WATER HEATER
Maytag HJ640NBRT GAS WATER HEATER
Reply With Quote
See inside of your appliance - diagrams and part photos for virtually every model.

powered by AppliancePartsPros.com
 
  #2 (permalink)  
Old 08-15-2013, 05:16 AM
Senior Expert
APP Volunteer
 
Join Date: Feb 2008
Posts: 18,143
denman is a name known to all
Default

I cannot find any info on this unit.

I was leaning towards replacing the bake element until I tested its resistance. It doesn't seem really high; however, it is definitely higher than the broil element.
Having different resistances is normal.
The bake element looks like 2,000 watts and the broil 3,300 watts approximately.
I would sya your elements are OK.

Lastly, I don't see any damage on the control board.
The control board is the most likely blown part. A voltage spike in the unit often blows transistors etc. on the board and there will not be any visual indication that they are bad.
__________________
-
Reply With Quote
  #3 (permalink)  
Old 08-15-2013, 05:48 AM
Junior Member
 
Join Date: Aug 2013
Posts: 4
cjlogan@gmail.com is on a distinguished road
Default Blown control board

The control board is the most likely blown part. A voltage spike in the unit often blows transistors etc. on the board and there will not be any visual indication that they are bad.
First of all, thanks for the quick reply.

Given that the oven still works in general, but only the bake preheat function isn't working properly, does that mean that only a small part of the control board is bad? Having said that, it looks like the control board is all one piece and would need to be replaced as a whole.
Reply With Quote
  #4 (permalink)  
Old 08-15-2013, 06:42 AM
Senior Expert
APP Volunteer
 
Join Date: Feb 2008
Posts: 18,143
denman is a name known to all
Default

Given that the oven still works in general, but only the bake preheat function isn't working properly, does that mean that only a small part of the control board is bad?
Yes.

Having said that, it looks like the control board is all one piece and would need to be replaced as a whole.
it has to be replaced as a whole.

Manufacturers do not publish schematics for circuit boards so unless the fault is obvious they cannot be repaired by DIYers.
__________________
-
Reply With Quote
  #5 (permalink)  
Old 08-15-2013, 07:39 AM
Junior Member
 
Join Date: Aug 2013
Posts: 4
cjlogan@gmail.com is on a distinguished road
Default Control board replacement

it has to be replaced as a whole.
Is is realistic that I, as a non-professional, could replace the entire control board if I got a new one?
Reply With Quote
  #6 (permalink)  
Old 08-15-2013, 09:43 AM
Senior Expert
APP Volunteer
 
Join Date: Feb 2008
Posts: 18,143
denman is a name known to all
Default

On most units I would say that yes you could replace it but I cannot find any info on this unit so cannot say that.

If you can figure out how to get at it then you should not have a problem replacing it.

Just be sure that the power to the unit is off when working on it.
__________________
-
Reply With Quote
See inside of your appliance - diagrams and part photos for virtually every model.

powered by AppliancePartsPros.com
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Oven not preheating to desired temp (replaced bake element and relay pcb) bds85466 Oven Repair (including Ranges and Cooktops) 0 02-07-2013 02:59 PM
Oven preheating problems groucho Microwave Repair 6 06-04-2012 12:53 PM
preheating gas oven keg1947 Oven Repair (including Ranges and Cooktops) 0 12-19-2011 06:57 PM
Oven Not Preheating To Temp CATRACER Oven Repair (including Ranges and Cooktops) 0 11-22-2010 08:45 AM
Oven not preheating matt.rankin Oven Repair (including Ranges and Cooktops) 0 10-14-2010 08:08 PM



All times are GMT -7. The time now is 01:52 AM.

The content on this web site is for informational purposes only and is not intended to replace an on-site diagnosis from a qualified appliance service technician. By reading any content on this site you agree to AppliancePartsPros.com , Inc. disclaimer and Terms of Use.
Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17