- Appliances
- Dishwashers
HE
LG HE on a dishwasher: heater error
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
Medium
Quick answer
On LG dishwashers, HE may appear when the heater that warms the water malfunctions and the water is not heated. LG says it requires inspection by a service technician: disconnect the appliance, note the code and model, and request service.
Safety first
Stop and check this first
- The heater runs on mains power under the tub: do not remove the kickplate or base to inspect it; LG says HE requires a technician.
Safe checks you can perform
- Code and model
- Safe disconnection
- Symptom from the last wash
Leave these tasks to a qualified professional
- Do not attempt this professional task: Heater measurement
- Do not attempt this professional task: Heated test
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.
Heater measurement
What they doWith the appliance unpowered, the technician measures the heater, its insulation and connections against LG specification for the model.
They must show youthe measured value against the specification.
In writingwhat was measured, the result and the reference of any replaced part.
Heated test
What they doAfter the repair, the technician runs a heated programme and checks it finishes without HE.
They must show youthe finished programme with no code.
In writingthe test and the date.
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
Code and model
No special tools
Procedure
- Who:
- you.
- How:
- take a photo of the display showing HE and of the model label; LG notes that codes differ by model.
- Result that matters:
- having the exact data for the technician.
- If other codes appear, such as tE:
- note them; tE points to the temperature sensor.
- If only HE appears:
- move on to disconnecting.
- Evidence to keep:
- the photos with the date.
Evidence: [LG Dishwasher] Guide to Error Codes
- 2
Safe disconnection
No special tools
Procedure
- Who:
- you.
- How:
- unplug the dishwasher; if it is built in and the plug is behind it, use the switch that controls its power or turn off the power strip hidden behind the kickplate, as LG says.
- Result that matters:
- no power until the visit.
- If you cannot find the switch:
- switch off its circuit at the breaker panel.
- If it is already disconnected:
- leave it and do not pull the unit out.
- Evidence to keep:
- which switch or circuit you turned off.
Evidence: [LG Dishwasher] Guide to Error Codes
- 3
Symptom from the last wash
No special tools
Procedure
- Who:
- you.
- How:
- without opening anything, check whether the dishes from the last programme came out cold or poorly dried.
- Result that matters:
- giving the technician the symptom with the code.
- If they came out cold:
- that fits HE; say so when requesting service.
- If they came out warm:
- say so anyway; the fault may be intermittent.
- Evidence to keep:
- a note of the programme and the result.
Evidence: [LG Dishwasher] Guide to 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
- Dishwashers
Known code variants
- error HC secadora Samsung
- error HE lavavajillas LG
- error HE lavavajillas Samsung
- H E
- HC
- lavavajillas Samsung no calienta HE
- LG dishwasher HE
- LG dishwasher heater error
- LG HE
- LG HE lavavajillas
- Samsung dishwasher HE
- Samsung dishwasher not heating HE
- Samsung dryer HC error
- Samsung dryer HE code
- Samsung HE dishwasher code
- Samsung HE dryer
- Samsung HE lavavajillas
- Samsung HE secadora
- Samsung secadora HE
What it means
In its dishwasher error code guide, LG explains that HE may appear when the heater that warms the water malfunctions, that is, when the supplied water is not being heated. LG gives no home steps for HE and asks for a service technician inspection. LG also notes that codes can differ by model. The heater runs on mains power next to water, and the code alone does not prove it is broken: its connection, the sensor or the control can also fail.
Warnings and stop conditions
- Mediumsource verified
The heater runs on mains power under the tub: do not remove the kickplate or base to inspect it; LG says HE requires a technician.
Evidence: [LG Dishwasher] Guide to Error Codes
Symptoms and causes
Probable causes · in order
- Heater not heatingCommon
This is what LG describes for HE. It fits if the dishes come out cold or poorly dried; only a technician measurement confirms the part.
Evidence: [LG Dishwasher] Guide to Error Codes
- Heating connection, sensor or controlPossible
With a sound heater, the fault may be in its wiring or the electronics that drive it. The code does not separate them.
Evidence: [LG Dishwasher] Guide to Error Codes
Virtual technician
Does HE 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 Dishwasher] Guide to Error Codes
LG Electronics · 2025 · official_doc
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