LG Range Code F42: Supply Voltage
On LG electric and gas ranges with a numeric F-code display, F42 is listed as a voltage error. The control has measured a supply voltage that is not right for the range, which can mean the…
- Code
- F42
- Appliance
- Range
- Brand
- LG
- Warranty
- 30-day workmanship
What F42 means
On LG electric and gas ranges with a numeric F-code display, F42 is listed as a voltage error. The control has measured a supply voltage that is not right for the range, which can mean the power coming into the home or the range wiring is off. The range may stop heating or stop responding. Low voltage at the outlet is a possible cause, and a qualified electrician can check it.
Common causes of F42
- Supply voltage that is low or unsteady
- A loose connection at the range power feed
- A control that is misreading the supply
- A breaker that is weak
1. Switch the range's circuit breaker off for 30 seconds, then back on. 2. Try the function again. 3. If F42 returns, have a licensed electrician check the supply to the range, then call us. 4. Avoid running other large appliances on the same circuit while you test.
- Supply problems and board problems look alike on the display, so we measure the supply before touching the range.
- We tell you the written price before any work starts.
Other Range codes
What does F42 mean?
The control sees a voltage problem. It can come from the house supply or from the range. Either the supply or the range could be the source, which is why a test matters.
Should I call an electrician?
If F42 returns after the breaker reset, yes. A licensed electrician can test the supply, and we can test the range. A licensed electrician can read the outlet voltage safely and tell you what it supplies.
Is F42 dangerous?
Low voltage is not a hazard by itself, but do not open panels or work on wiring yourself. Leave the wiring to a licensed electrician, and we handle the range.
Still seeing F42?
A technician diagnoses it on site and gives you the price in writing before any work starts.