In a washing machine with two inlets, an unexpected temperature can be due to the water supply, connections, or the program's mixing cycle. Check each inlet before suspecting a valve.
Confirm which connection feeds each inlet
Check the appliance labels and the manual: the color of a hose alone does not prove which water it carries. After an installation or a move, especially check whether the hot and cold connections were swapped.
See whether the same temperature always fails, or only a certain program. The machine may mix both water supplies or need them at different stages, even if you select a cold wash. Do not close one inlet to experiment unless you confirm that the manufacturer allows it.
What to check without accessing the inside
- Water availability at each supply and whether its shutoff valve is open.
- A kinked or crushed hose, especially behind the machine.
- Recent changes to the home water heater, plumbing, or installation.
- Whether the selected program matches the temperature it actually controls, without judging by the clothes after a cold rinse.
If you need to correct the connections, follow the requirements for cold and hot water inlet and avoid handling pressurized or hot lines. A path that does not let water through despite a correct supply requires checking the valve and control.
When the machine receives water but does not heat it internally, the issue is different: see no water heating.
Record the result by inlet and by program; “only the hot wash fails” is more useful than attributing the problem to a general temperature issue.