DW just started hanging-up in the WATER HEATING cycle before rinse, NORMAL CYCLE, 42 minute point. Pump circulates water, but water will not heat to set point temp. Inlet water temp is about 120 F. I can touch the heating element during WATER HEATING cycle without discomfort or injury, although the element feels warm.
Ran the Diagnostics Test Cycle and everything went fine to Interval 7, the Water Heating interval. When it appeared the water was not getting any hotter, I advanced to the next interval by pressing POTS & PANS.
At the end of the Test Cycle, after the CLEAN LED illuminated, I opened the door and sprinkled water on the element and the water vaporized (boiled off) immediately.
The element appears to be functioning, so could this problem be caused by the control circuit, the thermistor?
Should the element get hot during WATER HEATING like it does during HEAT DRY?
Gene,
Thanks for your response. O.K., I’ve taken the control board out and I don’t see any evidence of damage on the exposed, component side of the board. Is there some easy way to get the board out of the housing so I can look at the other side? There are 4 integral retainer clips on each side of the housing.
Am I correct in assuming the heating element should be hotter during WATER HEATING?
The control board should sense the temperature rise during water heating and if it does not, then it should stop the dishwasher and show the error code.
When you said "inlet water temperature is about 120°F", did you measure the water temperature inside the dishwasher? This is very important.
Gene,
Does the control board sense the temperature through the thermistor? The TECH SHEET on the DW indicates that during the Normal Wash cycle, the thermal hold interval is terminated and cycle timing is resumed when the water is heated to the setpoint temperature (135 F) or when the thermal hold default time elapses (20-45 minutes). The TS doesn’t say anything about error codes. How would they be displayed and where would the codes be listed?
Anyway, after your last message, I decided to put everything back together and run it through a Normal cycle and check the temps again. When the Water Heating cycle started the water in the machine measured 120 F. I checked a few minutes later and was surprised to find that the temp had increased to about 130 F. Then after about 15 minutes into the Water Heating interval, the interval ended, the timer resumed and the wash cycle continued on to completion!
The 15 minute delay may be a little long, but at least things appear to be working. I will see what I can do to increase the water temp into the DW.