Initially I replaced the drain pump and heating element due to the 7flash error/unit not starting indicating a heating issue. Worked for a week, then replaced the main control board, and tstat. Ran for about a
Month. The water coming into the unit takes forever to heat, I understand that this unit senses water temp and will throw an error if the water temp is not right. Is there another part I need to replace or ????
Replaced, heating element, tstat, main control board and drain pump
- Guest asked 8 years ago
Before replacing any more parts let’s make sure you are getting hot water to the unit. Try running the water to your sink first to make sure you have water that is at least 120 degrees in the pipes and going to the unit. Try that the next couple of times you run the dishwasher and see if that rectifies the issue. You also want to confirm the unit is hooked up to the hot water line not the cold water line, depending where you are at in the county this can make a big difference in the winter months.
Your next step in replacing parts in the heating circuit would be replacing your thermistor, relatively easy to replace and relatively low in cost. If none of those work for you you may have to go back to replacing your heater and board. There is a known issue where the heater and the board need to be replaced together as a kit for that model.
If your original heater# is 8269244 there is a replacement kit with heater and board together of part# 8193995
If your original heater# is 8268559 there is a replacement kit with heater and board together of part# 8193995
If your original heater# is 8563464 (KitchenAid Models) there is a replacement kit with heater and board together of part# 8193995
If your original heater# is 8563464 (Whirlpool Models) there is a replacement kit with heater and board together of part# 8193996.
There was a change in wattage in the heater, and some units require a new electronic control. The control pulses the heater on and off during operations. The control needs to be looked up by which heater you have, not by the original part number listed on the machine. If it is looked up only by model you may get a control board that fails on you.
Good luck on the repair and let us know how it goes!
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- Matt, Ace Appliance answered 8 years ago
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Sorry for the confusion earlier, I have replaced the thermistor when the main control board was replaced, the water takes at least 5 minutes from running the faucet bad ore it starts getting hot. We informed the owner after the board and heater was replaced, it seems this may not have been addressed. We also suggested purging the line until the water got hot, then turn on the dishwasher or adjust hot temperature.
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That could be the reason for the error code if it takes that long to get hot at the sink. Have they been running the water first at the sink to get it hot and still getting this error code? You can clear the error code and it will work again for a while until it recognizes a water temp issue again.
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