Does it matter if you wash your hair in cold or hot water?

unplug your machine swap the water inlet wires hot to cold and cold to hot if you now have only a cold wash replace the water inlet

if it's hot and cold fill machine , have you got the hoses connected correctly hot to hot supply , cold hose to cold mains supply
if its cold supply only to machine , make sure it's not connected to hot water supply, this could be worth checking.

these washers sense the water temperature that comes in to them and automatically adjust the temperature by turning on the hot and cold valve on make sure both your water valves on the wall are on all the way and water is coming out of each

Makes a big difference. Cold water valve is is normally marked blue or simply cold water. connected to cold water tap. Hot water marked with red colour or simply hot and connected to hot water tap.(Red hose - Hot water. Blue hose- cold water.).

Your water temp is determined by 2 things. First the hook up to your water supply. If you are able to turn off the hot water valve that feeds the unit and then select a cold water only wash, do you get cold water?? If not then someone hooked up the hoses to 2 hot water feeds. If hot and cold feeds are installed right, the second thing is your computer which monitors the incoming temp through the boards atc control and a thermister. If you select cold, and only get a hum and the cold water valve is on, you may have to clean the screens in the valve of any sediment. If no hum, and no cold, dead solenoid on valve, but that would throw an error code usually. All fills are monitored by the board and usually begin with a hot/wrm mix and then changeover to a monitored cold temp , about 70 degrees.

If the washer fills very slowly when you have it on a cold setting the cold water may be shut off behind you washer or possibly the hot and cold are switched. if that is not the problem then you have a relay problem with the machines electrical system.

It is normal for the machine to cycle between hot and cold water when filling even if selecting a cold cycle. The reason for this is because even a cold cycle requires the water temperature to be 78F for the soap to break up efficiently.

During the cold months the water in your pipes is probably less than 78F so the machine will need to add some hot water to bring it up to this temperature. Basically, it is adding cold and then hot water to maintain a temperature in the tub of 78F for cold water cycles.

Hope this helps, please rate my solution.

sundsas if you have a bad temp select switch. only selecting hot/hot

The problem is solved, it was a single handle shower valve in the open hot position when my wife washed her hair, she turned the water off at the shower head. This forced hot water into the cold pipes when a faucet down the line was opened. Thnks for the help.

hmmm..now that's really interesting..that's a function of the control board..methinks you have an error in the panel and control center.