Power failure — dryer lost power during an active drying cycle
The PF error on the LG DLEX3700V indicates power failure — dryer lost power during an active drying cycle. This typically occurs due to power outage or trip of the household circuit breaker. Most homeowners fix this in 5–15 min by following the steps below.
Common Causes of PF
- 1Power outage or trip of the household circuit breaker
- 2Loose power cord connection at the wall outlet or dryer terminal block
- 3Overloaded household circuit causing breaker to trip
- 4Brief voltage drop from another appliance starting on the same circuit
How to Fix PF
- 1
Step 1
Check that the power cord is firmly plugged into the wall outlet
- 2
Step 2
Check the household circuit breaker panel — reset any tripped breaker for the dryer circuit by switching it fully off then back on
- 3
Step 3
Ensure the dryer is on a dedicated 240V circuit and not sharing with other high-draw appliances
- 4
Step 4
Press Start or any button on the dryer to resume or restart the interrupted cycle
- 5
Step 5
If the PF code appears again without an obvious power event, have an electrician inspect the outlet and wiring
Tools Needed
When to Call a Technician
PF error keeps appearing without a known power outage — have an electrician inspect the circuit, outlet, and dryer terminal block connections
Frequently Asked Questions
Common questions about LG PF error
The PF code on the LG DLEX3700V means the dryer lost electrical power while a cycle was in progress. This most commonly happens due to a main power outage, or a household circuit breaker tripping due to an overload. Check the breaker panel and reset any tripped breaker, then restart the dryer.
No — the PF code is informational rather than indicating a hardware fault. It simply tells you the cycle was interrupted due to power loss. Once power is restored and the breaker is reset, pressing Start will resume or restart the cycle. No repair is typically needed if the PF code was caused by a true power outage.
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