Bosch Washing Machine Not Heating Water? Here's How to Fix It

Is your Bosch washing machine still not heating up water?

I would not assume a major part has failed yet. I suggest you check the selected temperature, hot water supply, and inlet hose, because a wrong setting, closed supply tap, or bent inlet hose can leave the washer with cold water.

Bosch Washing Machine Hot Water Problems and Checks

Before replacing a part, check the simple causes. To fix a Bosch washing machine not heating water, check the cycle, water supply, inlet hose and screens, then have the heating parts tested.

In many cases, if your Bosch washing machine won't heat water, note whether it is washing in cold water only or the water is not getting hot on every warm cycle.

Have the Water Controls Inspected

Before moving on, if the water is not getting hot after the supply checks, the inlet valve, heater, temperature sensor, wiring, or control may be at fault. Which parts apply depends on the Bosch model.

First, keep the machine unplugged and ask a qualified technician to test it. Contact Bosch first if the washing machine is under warranty.

The heating part on your Bosch sometimes need only a simple correction while the washer is empty.

Check the Temperature Setting

Besides this, select a normal warm or hot cycle instead of a cold, delicate, or energy saving option. Let the Bosch washing machine complete an empty test cycle without opening it while it runs.

Next, some cycles use cooler water to protect fabric. Compare the choice with the cycle chart in your manual before deciding the washing machine will not heat.

This cycle setting problem sometimes come and go on a Bosch as you check the simple causes.

Make Sure the Hoses Are Connected Correctly

For this check, follow each inlet hose behind the Bosch washing machine. Straighten sharp bends, free a hose trapped against the wall, and make sure the connections match the labels on the machine.

First, turn off the water before moving a connection. Replace a hose that is split, swollen, or leaking instead of trying to patch it.

This part around the inlet hose often get forgotten on a Bosch washing machine before you try a harder repair.

Inspect the Household Hot Supply

Next, check the manual to see whether your Bosch washing machine uses separate hot and cold hoses or heats a cold supply inside the machine. If it has a hot hose, open that tap fully and run the nearest hot sink tap.

For this check, if the nearby tap stays cold, the trouble is in the household hot water supply. A single inlet model needs a technician if its internal heating parts do not warm the wash.

A small hot water supply problem on the Bosch often cause a much bigger symptom while you look over the machine.

Inspect the Water Inlet Screens

As you work, small screens where the hoses meet the Bosch washing machine catch grit. A blocked hot side can leave the machine washing in cold water only even when cold filling looks normal.

First, unplug the washing machine, close the taps, and follow the manual before removing a hose. Rinse loose dirt gently, do not pull the screen out, and check every connection for leaks afterward.

In many cases, if both supplies are weak, read about a Bosch washing machine that is not filling with water.

Conclusion

These Bosch checks move from simple causes of the problem to repairs that need professional help for warmer wash water.

• Have the Water Controls Inspected
• Check the Temperature Setting
• Make Sure the Hoses Are Connected Correctly
• Inspect the Household Hot Supply
• Inspect the Water Inlet Screens