- Appliances
- Dehumidifiers
CH
LG CH on a dehumidifier: possible refrigerant leak
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
Medium
Quick answer
On an LG dehumidifier, CH on its own means a refrigerant leak. LG says there are no user steps: switch it off, unplug it and request repair. Do not confuse it with CH 24, CH 67 or CH 01 to CH 03.
Safety first
Stop and check this first
- Only a qualified technician opens the refrigerant circuit: LG gives no steps for CH and the user must not touch pipes or connections.
Safe checks you can perform
- Full code on the display
- Switch off and unplug
- Details for service
Leave these tasks to a qualified professional
- Do not attempt this professional task: Leak confirmation with refrigeration equipment
- Do not attempt this professional task: Operating test after the repair
- Do not attempt this professional task: Repair versus replacement assessment
What a technician must be able to justify
Technician visit
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.
Leak confirmation with refrigeration equipment
What they doA refrigeration technician tests the sealed circuit for leaks with their equipment and locates the leak point, if any.
They must show youthe leak test and the point found.
In writingthe leak found, the repair, the refrigerant and quantity charged per the unit's rating plate.
Operating test after the repair
What they doThe technician runs the unit and checks it collects water again and CH does not return.
They must show youthe unit collecting water without a code.
In writingthe test and the result.
Repair versus replacement assessment
What they doIf the leak is in a sealed circuit part, the technician explains what must be replaced before doing it.
They must show youthe affected part and why it must be replaced.
In writingthe itemised quote for parts and labour.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Full code on the display
- Who:
- you.
- How:
- check whether the display shows CH alone or CH followed by numbers (24, 67, 01, 02, 03).
- Result that matters:
- knowing whether it is the refrigerant leak or another code.
- If it shows CH alone:
- follow this entry and request repair.
- If it shows CH with numbers:
- look up that code; some have steps you can do.
- Evidence to keep:
- photo of the display.
Evidence: LG Dehumidifier - Error Code List
Switch off and unplug
- Who:
- you.
- How:
- switch the dehumidifier off and unplug it. Do not keep restarting it: LG gives no troubleshooting steps for CH.
- Result that matters:
- the unit stopped while you wait for the technician.
- If it is unplugged:
- request the repair.
- If you notice an odd smell or noise:
- ventilate the room and tell the technician.
- Evidence to keep:
- note of the date and any smell or noise.
Evidence: LG Dehumidifier - Error Code List
Details for service
- Who:
- you.
- How:
- note the model and serial number from the label and since when the unit has been collecting less water.
- Result that matters:
- useful information for the diagnosis and the warranty.
- If it has collected less water for days:
- say so; it fits a loss of charge.
- If it failed suddenly:
- say that too; the technician will take it into account.
- Evidence to keep:
- photo of the label and the invoice.
Evidence: LG Dehumidifier - Error Code List
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Appliances
- Brand
- LG
- Product type
- Dehumidifiers
Known code variants
- C H
- ch
- deshumidificador LG CH fuga refrigerante
- LG dehumidifier CH
- LG dehumidifier CH refrigerant leak
- LG deshumidificador CH
What it means
LG explains that the CH code indicates a refrigerant leak and that there are no troubleshooting steps for the user: the unit needs repair. The refrigerant runs in a sealed circuit with the compressor; without the correct charge, the unit does not cool the coil and stops collecting water. The control infers the leak from how the circuit behaves, so the technician must confirm it with their equipment before recharging or replacing parts. LG uses other codes starting with CH that mean different things.
Warnings and stop conditions
- Mediumsource verified
Only a qualified technician opens the refrigerant circuit: LG gives no steps for CH and the user must not touch pipes or connections.
Evidence: LG Dehumidifier - Error Code List
Symptoms and causes
Probable causes · in order
- Leak in the refrigerant circuitCommon
This is the cause LG gives for CH; it is confirmed only by the technician's check, not by the code.
Evidence: LG Dehumidifier - Error Code List
- A similar code misreadPossible
LG has CH 24 (pressure switch), CH 67 (fan lock) and CH 01 to CH 03 (electronics); if numbers follow CH on the display, it is a different case with different steps.
Evidence: LG Dehumidifier - Error Code List
Virtual technician
Does CH 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 Dehumidifier - Error Code List
LG Electronics · 2025 · official_doc
Was this entry useful?