LG Washer Not Heating Water? Here's How to Fix It

Have you noticed that your LG washer is not heating up water?
I think the best place to begin is with the simple checks. I would check the selected temperature, hot water supply, and inlet hose, since a wrong setting, closed supply tap, or bent inlet hose can leave the washer with cold water.
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Pros:
- Handles a real 17.8 lb load, not just socks.
- Hooks to a kitchen tap in minutes.
- Keeps laundry going during a repair.
Cons:
- Needs floor space near a sink.
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What to Check When LG Washer Water Stays Cold
Start with the easiest checks. To fix an LG washer not heating water, check the cycle, water supply, inlet hose and screens, then have the heating parts tested.
As you work, if your LG washer won't heat water, note whether it is washing in cold water only or the water is not getting hot on every warm cycle.
Look Behind the Washer at the Hoses
Besides this, follow each inlet hose behind the LG washer. Straighten sharp bends, free a hose trapped against the wall, and make sure the connections match the labels on the machine.
Before you begin, turn off the water before moving a connection. Replace a hose that is split, swollen, or leaking instead of trying to patch it.

There is usually a few clues around the LG inlet hose before you try a harder repair.
Review the Selected Cycle
Further, select a normal warm or hot cycle instead of a cold, delicate, or energy saving option. Let the LG washer complete an empty test cycle without opening it while it runs.
Remember, some cycles use cooler water to protect fabric. Compare the choice with the cycle chart in your manual before deciding the washer will not heat.
These cycle setting is also worth your attention while you look over the machine.
Test the Nearby Hot Tap
Remember, check the manual to see whether your LG washer 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.
Besides this, 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.

The simple signs around this hot water supply is easy to miss as you inspect it.
Check the Valve and Temperature Parts
For this check, 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 LG model.
Before you begin, keep the machine unplugged and ask a qualified technician to test it. Contact LG first if the washer is under warranty.

The LG may gives you a useful clue around this heating part during your first check.
Check the Hose Connection Screens
Next, small screens where the hoses meet the LG washer catch grit. A blocked hot side can leave the machine washing in cold water only even when cold filling looks normal.
Before you begin, unplug the washer, 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.
As you work, if both supplies are weak, read about an LG washer that is not filling with water.
Conclusion
The simple checks above should help you get warmer wash water or decide whether the LG needs service.
- Look Behind the Washer at the Hoses
- Review the Selected Cycle
- Test the Nearby Hot Tap
- Check the Valve and Temperature Parts
- Check the Hose Connection Screens
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Pros:
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Cons:
- Heavy buildup may need two runs.
As an Amazon Associate I earn from qualifying purchases.
| ROVSUN 17.8LBS Portable Washing Machine | Check Price |
| Zyro Washing Machine Cleaner Tablet | Check Price |
| Portable Washing Machine, Mini Washer | Check Price |
LG Washing Machine Still Not Working?
Start with what your washing machine is doing. Use our diagnostic tool, answer a few easy questions, and get the solution.
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Written by
Muhammad Ali is an Electrical Engineer and Appliance Repair Specialist from Canada, who has been helping people fix their appliances since 2020.