- Appliances
- Refrigerators
Er gF
LG Er gF on a refrigerator: water flow sensor error
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Low
Quick answer
LG says gF points to a water flow sensor fault, often from a closed tap, a kinked hose or incorrect pressure. Unplug the fridge for 60 seconds, plug it straight into the outlet and check the tap and hose.
Safety first
Stop and check this first
- When checking the hose behind the fridge, unplug it first and dry the floor. Do not take apart the sensor or internal water connections: LG asks you not to disassemble internal parts.
Safe checks you can perform
- 60 second reset and direct outlet
- Tap open and hose without kinks
- Water pressure against the manual
Leave these tasks to a qualified professional
- Do not attempt this professional task: Water pressure measurement
- Do not attempt this professional task: Flow sensor check
What a technician must be able to justify
A technician is coming
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Water pressure measurement
What they doA plumber measures the pressure at the fridge supply with a gauge and compares it with LG's manual.
They must show youthe measured pressure against the manual requirement.
In writingthe measured value and what was corrected.
Flow sensor check
What they doIf water arrives at the right pressure, the LG technician checks the flow sensor and its connection with the fridge unplugged.
They must show youthe sensor test.
In writingthe cause and the replaced part with its reference.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Checks and evidence, step by step
Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
- 1
60 second reset and direct outlet
No special tools
Procedure
- Who:
- you.
- How:
- unplug the fridge for 60 seconds and plug it straight into a wall outlet, without an extension cord or power strip, as LG asks.
- Result that matters:
- gF does not return after the reset.
- If it does not return:
- it was a one-off; watch the dispenser for a few days.
- If it returns:
- move on to the tap and hose.
- Evidence to keep:
- a photo of the code and of how it was plugged in.
Evidence: [LG Refrigerator] Digital and Analog Error Codes
- 2
Tap open and hose without kinks
No special tools
Procedure
- Who:
- you.
- How:
- open the fridge's water tap fully and follow the hose to see that water arrives and that it is not kinked or crushed.
- Result that matters:
- water flows freely, as LG asks.
- If the tap was closed or the hose kinked:
- fix it and try the dispenser.
- If everything was fine:
- the tap and hose are ruled out.
- Evidence to keep:
- a photo of the open tap and the hose route.
Before moving the fridge to see the hose, unplug it and dry any water on the floor: water and electricity together are dangerous.
Evidence: [LG Refrigerator] Digital and Analog Error Codes
- 3
Water pressure against the manual
No special tools
Procedure
- Who:
- you, or a plumber if it needs measuring.
- How:
- find the water pressure LG requires in your model's manual and compare it with your supply.
- Result that matters:
- the pressure is within what the manual states.
- If it is low or high:
- a plumber should correct the supply; the fridge is not the cause.
- If it is correct and gF stays:
- the sensor or its circuit becomes more likely; contact LG.
- Evidence to keep:
- the manual figure and the plumber's measurement.
Evidence: [LG Refrigerator] Digital and Analog Error Codes
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Appliances
- Brand
- LG
- Product type
- Refrigerators
Known code variants
- E gF
- ER GF
- Er(E) gF
- Error gF LG
- gF
- gF frigorífico LG
- LG gF error
- LG refrigerator gF
What it means
LG explains that gF means a malfunction in the fridge's water flow sensor, which measures the water reaching the dispenser and ice maker. According to LG it can be caused by a closed water tap, a kinked hose or incorrect water pressure. Its guide asks you to unplug for 60 seconds and plug straight into an outlet, open the tap fully, check that water reaches the fridge through the hose without kinks and verify that the pressure meets the manual. If the code stays, the fault may be in the sensor or its circuit.
Warnings and stop conditions
- Mediumeditorial warning
When checking the hose behind the fridge, unplug it first and dry the floor. Do not take apart the sensor or internal water connections: LG asks you not to disassemble internal parts.
Evidence: [LG Refrigerator] Digital and Analog Error Codes · How to Troubleshoot the Error Codes on Your LG Refrigerator
Symptoms and causes
Probable causes · in order
- Water tap closed or half openCommon
LG lists it first. It is confirmed when gF clears after opening the tap fully and resetting.
Evidence: [LG Refrigerator] Digital and Analog Error Codes
- Kinked hosePossible
Another cause LG gives. You can see it by following the hose behind the fridge; once straightened, water reaches it again.
Evidence: [LG Refrigerator] Digital and Analog Error Codes
- Water pressure out of specificationPossible
LG asks for the pressure to meet the manual. If the tap and hose are fine, a plumber can measure the home pressure.
Evidence: [LG Refrigerator] Digital and Analog Error Codes
- Flow sensor or circuit faultPossible
If water arrives properly and gF stays, LG refers you to support; the technician checks the sensor.
Evidence: [LG Refrigerator] Digital and Analog Error Codes · How to Troubleshoot the Error Codes on Your LG Refrigerator
Virtual technician
Does Er gF still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
[LG Refrigerator] Digital and Analog Error Codes
LG Electronics · 2025 · official_doc
- 2
How to Troubleshoot the Error Codes on Your LG Refrigerator
LG Electronics · 2026 · official_doc
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