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Hotpoint BWD129 - Wash temperature too high

Cold wash is fine but select any temperature and it virtually boils the clothes.

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Hello
Welcome to Fixya
My name is Huum,



Water temperature switch

The water temperature switch directs power to the valve. If there is no power getting to the valve, check the switch according to the wiring diagram for your machine.
Faulty Water Inlet Valve
The water inlet valve is the device that meters water from the supply lines into your wash tub. On domestic washers, there are two lines, one hot the other cold. These valves are susceptible to mineral build-up and sediment deposits. There are two common failure modes:

Failure Mode One: Valve will not open.
If you can verify that the solenoid on the valve body is receiving the requisite voltage and the valve will not open, then it is faulty. Since the solenoids operate independently, it is likely that one side of the valve will work and the other will not. This can produce strand results such as a very hot wash when warm is selected (due to no cold water). Or the reverse in that the wash water is cold when warm is selected. If mineral or hard water deposits are a problem, you may witness a substantial increase in the time required for the tub to fill. This is caused be a decrease in the flow ware of the valve.

Failure Mode Two: Valve opens but will not close.
This is verified by a valve that allows water to flow into the tub even though no power is being supplied to the solenoid. This one is usually quickly diagnosed when the machine begins to overflow and the power plug for the washer is disconnected from the wall. However, this will not stop the water from flowing into the machine. The water must be shut off at the wall. As with the previous failure mode, the variant of this failure mode is that it may take the valve a while to completely bridge the flow of water after the power has been removed from the solenoid.

How to Diagnose?
There are a couple of ways to diagnose a faulty valve. However, there is a simple test that one can perform that will usually let you know if the water inlet valve is faulty.

Scenario:
When set to cold wash and rinse, the unit will not fill. When set to warm wash and cold rinse the washer will fill with hot water only and will fail to rinse. This is a common scenario where the cold water side of the valve does not appear to be contributing to the fill, but the hot water side does. This symptom could be easily reversed where cold water is being supplied, but never hot water.

So, how can the problem be determined? It is as simple as switching the wire harness plugs on the hot and cold side. In the example above where the cold water is never being supplied, the symptoms would be the opposite when the wiring harnesses were switched. So the machine would produce only produce cold when warm or hot is selected. No water should be present when you select cold. This verifies that the timer, wiring and switches are all in working order. Assuming this tests checks out, you simply need to replace the water inlet valve.

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Posted on Dec 23, 2008

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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Hotpoint BWD129 - Wash temperature too high


Yes you are right!
I did not mention the sensor!
If what you tell me is accurate, the sensor is the next logical part and perhaps the only one left!
I think this is it. As long as the water valve is okay!

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