Discuss

Water isn't heating?

 in

Dishwasher Repair

. "

I have a Kenmore dishwasher model 665.16469300 that isn't cleaning the dishes fully. Normal cycle seems to run OK. When

..."
 
 
Register | FAQ's | New Posts | Today's Posts | Extras
Appliance Repair Forum > Appliance Repair Help > Dishwasher Repair » Water isn't heating?

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 09-10-2013, 01:29 PM
Junior Member
 
Join Date: Sep 2013
Posts: 3
Johnny Kaye is on a distinguished road
Default Water isn't heating?
Model Number: 665.16469300   Brand: Kenmore   Age: More than 10 years   

Appliance Parts from AppliancePartPros.com


I have a Kenmore dishwasher model 665.16469300 that isn't cleaning the dishes fully. Normal cycle seems to run OK. When I run anti-bacterial or sanitize rinse the "sanitized" LED blinks at cycle completion. Also the water doesn't seem to be hotter than supply line.

Suspecting the heating element circuit, I isolated the heating element and measured the resistance. It is essentially zero ohms. The wiring diagram says this value should be between 10-35 ohms. I ran an anti-bacterial cycle with a voltmeter across the heating element and it always read zero volts. I then ran an anti-bacterial cycle with the element removed from the circuit. The voltmeter indicated around 20 volts AC. Shouldn't this be 120 volts? I also measured the resistance across the HI limit thermostat terminals. The wiring diagram indicates this is supposed to be NC and opens at around 171 deg F. It is NC but even at 200 deg F it didn't open.

Am I interpreting the results correctly that 1) the heating element is shorted, 2) the Hi limit thermostat is malfunctioning AND 3) the control panel is sending the incorrect voltage to the heating element?


Related Models
Kenmore 665110739120 DISHWASHER
Kenmore 665110739130 DISHWASHER
Kenmore 665110739140 DISHWASHER
Kenmore 665110739190 DISHWASHER
Kenmore 66513012K110 UNDERCOUNTER DISHWASHER
Kenmore 66513013K110 UNDERCOUNTER DISHWASHER
Kenmore 66513014K110 UNDERCOUNTER DISHWASHER
Kenmore 66513019K110 UNDERCOUNTER DISHWASHER
Kenmore 66513023K110 DISHWASHER
Kenmore 66513032K110 UNDERCOUNTER DISHWASHER
Kenmore 66513033K110 UNDERCOUNTER DISHWASHER
Kenmore 66513039K110 UNDERCOUNTER DISHWASHER
Kenmore 66513042K110 UNDERCOUNTER DISHWASHER
Kenmore 66513043K110 UNDERCOUNTER DISHWASHER
Kenmore 66513044K110 UNDERCOUNTER DISHWASHER
Kenmore 66513049K110 UNDERCOUNTER DISHWASHER
Kenmore 66513102K900 DISHWASHER
Kenmore 66513102K901 UNDERCOUNTER DISHWASHER
Kenmore 66513102K902 UNDERCOUNTER DISHWASHER
Kenmore 66513103K900 DISHWASHER
Kenmore 66513103K901 UNDERCOUNTER DISHWASHER
Kenmore 66513103K902 UNDERCOUNTER DISHWASHER
Kenmore 66513104K900 DISHWASHER
Kenmore 66513104K901 UNDERCOUNTER DISHWASHER
Kenmore 66513104K902 UNDERCOUNTER DISHWASHER
Kenmore 66513109K900 DISHWASHER
Kenmore 66513109K901 UNDERCOUNTER DISHWASHER
Kenmore 66513109K902 UNDERCOUNTER DISHWASHER
Kenmore 66513112K700 DISHWASHER
Kenmore 66513112K701 DISHWASHER
Kenmore 66513112K702 UNDERCOUNTER DISHWASHER
Kenmore 66513113K700 DISHWASHER
Kenmore 66513113K701 DISHWASHER
Kenmore 66513113K702 UNDERCOUNTER DISHWASHER
Kenmore 66513114K700 DISHWASHER
Kenmore 66513114K701 DISHWASHER
Kenmore 66513114K702 UNDERCOUNTER DISHWASHER
Kenmore 66513119K700 DISHWASHER
Kenmore 66513119K701 DISHWASHER
Kenmore 66513119K702 UNDERCOUNTER DISHWASHER
Kenmore 66513122K700 DISHWASHER
Kenmore 66513122K701 DISHWASHER
Kenmore 66513122K702 DISHWASHER
Kenmore 66513122K703 DISHWASHER
Kenmore 66513123K700 DISHWASHER
Kenmore 66513123K701 DISHWASHER
Kenmore 66513123K702 DISHWASHER
Kenmore 66513123K703 DISHWASHER
Kenmore 66513124K700 DISHWASHER
Kenmore 66513124K701 DISHWASHER
Kenmore 66513124K702 DISHWASHER
Kenmore 66513124K703 DISHWASHER
Kenmore 66513129K700 DISHWASHER
Kenmore 66513129K701 DISHWASHER
Kenmore 66513129K702 DISHWASHER
Kenmore 66513129K703 UNDERCOUNTER DISHWASHER
Kenmore 66513132K700 DISHWASHER
Kenmore 66513132K701 DISHWASHER
Kenmore 66513133K700 DISHWASHER
Kenmore 66513133K701 DISHWASHER
Kenmore 66513139K700 DISHWASHER
Kenmore 66513139K701 DISHWASHER
Kenmore 66513152K700 DISHWASHER
Kenmore 66513152K701 DISHWASHER
Kenmore 66513152K702 DISHWASHER
Kenmore 66513153K700 DISHWASHER
Kenmore 66513153K701 DISHWASHER
Kenmore 66513153K702 DISHWASHER
Kenmore 66513154K700 DISHWASHER
Kenmore 66513154K701 DISHWASHER
Kenmore 66513154K702 DISHWASHER
Kenmore 66513159K700 DISHWASHER
Kenmore 66513159K701 DISHWASHER
Kenmore 66513159K702 DISHWASHER
Kenmore 66513163K700 DISHWASHER
Kenmore 66513163K701 DISHWASHER
Kenmore 66513163K702 DISHWASHER
Kenmore 66513163K703 DISHWASHER
Kenmore 66513169K700 DISHWASHER
Kenmore 66513169K701 DISHWASHER
Kenmore 66513169K702 DISHWASHER
Kenmore 66513169K703 DISHWASHER
Kenmore 66513173K700 DISHWASHER
Kenmore 66513173K701 DISHWASHER
Kenmore 66513173K702 DISHWASHER
Kenmore 66513173K703 DISHWASHER
Kenmore 66513173K704 UNDERCOUNTER DISHWASHER
Kenmore 66513182K800 DISHWASHER
Kenmore 66513182K801 DISHWASHER
Kenmore 66513182K802 DISHWASHER
Kenmore 66513183K800 DISHWASHER
Kenmore 66513183K801 DISHWASHER
Kenmore 66513183K802 DISHWASHER
Kenmore 66513189K800 DISHWASHER
Kenmore 66513189K801 DISHWASHER
Kenmore 66513189K802 DISHWASHER
Kenmore 66513192K900 DISHWASHER
Kenmore 66513192K901 UNDERCOUNTER DISHWASHER
Kenmore 66513192K902 DISHWASHER
Kenmore 66513193K900 DISHWASHER
Kenmore 66513193K901 UNDERCOUNTER DISHWASHER
Kenmore 66513193K902 DISHWASHER
Kenmore 66513194K900 DISHWASHER
Kenmore 66513194K901 UNDERCOUNTER DISHWASHER
Kenmore 66513194K902 DISHWASHER
Kenmore 66513199K900 DISHWASHER
Kenmore 66513199K901 UNDERCOUNTER DISHWASHER
Kenmore 66513199K902 DISHWASHER
Kenmore 66513206K901 UNDERCOUNTER DISHWASHER
Kenmore 66513206K902 DISHWASHER
Kenmore 66513212K901 UNDERCOUNTER DISHWASHER
Kenmore 66513212K902 UNDERCOUNTER DISHWASHER
Kenmore 66513213K900 UNDERCOUNTER DISHWASHER
Kenmore 66513213K901 UNDERCOUNTER DISHWASHER
Kenmore 66513213K902 UNDERCOUNTER DISHWASHER
Kenmore 66513219K901 UNDERCOUNTER DISHWASHER
Kenmore 66513219K902 UNDERCOUNTER DISHWASHER
Kenmore 66513222K600 DISHWASHER
Kenmore 66513222K601 DISHWASHER
Kenmore 66513223K600 DISHWASHER
Reply With Quote
See inside of your appliance - diagrams and part photos for virtually every model.

powered by AppliancePartsPros.com
 
  #2 (permalink)  
Old 09-10-2013, 03:43 PM
Senior Expert
APP Volunteer
 
Join Date: Feb 2008
Posts: 16,612
denman is a glorious beacon of light
Default

1) the heating element is shorted,
Suspecting the heating element circuit, I isolated the heating element and measured the resistance. It is essentially zero ohms. The wiring diagram says this value should be between 10-35 ohms.
Very unlikely that it is shorted.
My guess would be that you use too high of a meter scale.
If your meter is digital use the most sensitive scale usually 200 ohms.
Also before starting short the meter leads together to check if there is a zero offset in the meter.

3) the control panel is sending the incorrect voltage to the heating element?
I ran an anti-bacterial cycle with a voltmeter across the heating element and it always read zero volts. I then ran an anti-bacterial cycle with the element removed from the circuit. The voltmeter indicated around 20 volts AC. Shouldn't this be 120 volts?
Yes it should be 120 volts.
What you see is probably just ghost voltage.
It could be that the control board is shot but I would check the thermistor resistance before replacing the board,

2) the Hi limit thermostat is malfunctioning
I also measured the resistance across the HI limit thermostat terminals. The wiring diagram indicates this is supposed to be NC and opens at around 171 deg F. It is NC but even at 200 deg F it didn't open.
This would not cause your problem.
It should measure 0 ohms at room temperature.
That it does not open is a bit of a worry because you do not have over temperature protection.
The hi-limit is just a safety device.
__________________
-
Reply With Quote
  #3 (permalink)  
Old 09-10-2013, 05:27 PM
Junior Member
 
Join Date: Sep 2013
Posts: 3
Johnny Kaye is on a distinguished road
Default

Thanks for getting back to me so quickly.

1.) Yes I used a digital scale on lowest setting and also checked that shorting the leads yielded 0 ohms before testing element. Heating element supposed to be 10-35 ohms but I measured 0 ohms?

2.) In addition when dishwasher is off there is about 7 volts always present. Note that when the element is in the circuit this voltage goes to zero (shorted?)

3.) I understood that always closed HI-limit switch wouldn't cause the problem of non-working heating element. I just wonder why so many things are going wrong.
Reply With Quote
  #4 (permalink)  
Old 09-11-2013, 01:46 AM
Senior Expert
APP Volunteer
 
Join Date: Feb 2008
Posts: 16,612
denman is a glorious beacon of light
Default

1.) Yes I used a digital scale on lowest setting and also checked that shorting the leads yielded 0 ohms before testing element. Heating element supposed to be 10-35 ohms but I measured 0 ohms?
I have never seen one short and am at a loss at what happened to it.
It's basically a straight wire that runs between the connections.
But since the meter says it is shorted then it is shorted.
I am assuming that when you said you isolated the heating element you meant that you disconnected both sides of it and therefore are sure that you are reading just the heating element and not a parallel/alternate circuit path.

2.) In addition when dishwasher is off there is about 7 volts always present. Note that when the element is in the circuit this voltage goes to zero (shorted?).
This could also be ghost voltage.
As soon as you put any type of current drawing device on it, it drops to zero.

3.) I understood that always closed HI-limit switch wouldn't cause the problem of non-working heating element. I just wonder why so many things are going wrong.
There is a scenario that would explain a lot of your symptoms.
Lets say that the heating element dropped resistance over some time instead of shorting out quickly which would/should have blown the house wiring circuit breaker.
Then it would draw more current and overheated in one area.
Then the high limit would have kicked open, regulating the temperature.
Most hi-limit thermostat contacts are not made to cycle many times unlike a main temperature control thermostat. So after a while they would blow either go open or weld themselves together. Yours seem to be welded together.
Now with too much current going to the element all the time, it blew the relay contacts on the control board.
The steps see reasonable but I have never seen this.

I am scratching my head over this one.
__________________
-

Last edited by denman : 09-11-2013 at 02:25 AM.
Reply With Quote
  #5 (permalink)  
Old 09-11-2013, 05:27 PM
Junior Member
 
Join Date: Sep 2013
Posts: 3
Johnny Kaye is on a distinguished road
Default

1.) Yes I disconnected the wires leading to the element for the measurement.

2.) Yes and a short across any circuit won't support any voltage.

3.) That's the same scenario I was envisioning. The insight into the hi-limit switch is helpful.

I'm afraid replacing the heating element, hi-limit switch, and control panel (probably about $130 plus shipping) is too expensive on top of the wash pump I just replaced.
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
Dishwasher Not Heating Water pec329 Dishwasher Repair 8 12-16-2011 11:44 AM
Not heating water merryfit Dishwasher Repair 0 01-17-2011 05:24 AM
Not heating water or drying FireMark Dishwasher Repair 0 12-28-2010 01:41 PM
Water not heating blanks Dishwasher Repair 0 12-16-2010 02:27 PM
Water heating indymttn Dishwasher Repair 1 04-04-2009 05:02 AM



All times are GMT -7. The time now is 04:39 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