LG PuriCare dehumidifiers (UD501KOG5 and similar 50-pint): quick sheet

Covers: LG PuriCare portable dehumidifiers such as UD501KOG5 (discontinued at several retailers) and later 50-pint PuriCare models. LG uses CH-prefixed fault codes.

Single sourceBrands: LG6 components

LG's own-design portable. Unlike most OEM-built portables, faults show as CH codes: CH for a refrigerant leak (no field fix), CH 24 pressure switch, CH 67 fan lock, CH 01-03 electronic faults. The owner's manual lists a 41-90 F operating range with protective shutdown above it.

Safety first

Unplug before cleaning.
Refrigerant-related codes are blocked: refer (EPA 608).

How it works

A compressor-driven coil removes moisture; the humidistat cycles the compressor to the setpoint. Auto-defrost runs when the coil gets cold and has its own indicator light.

A full or missing bucket stops the unit (full-bucket indicator with auto shut-off). A filter check indicator reminds the user after a set number of run hours.

Below 32 F water can freeze inside; above about 90 F a protective device shuts the unit off. LG treats a CH refrigerant code as service-only.

Components & tests

Unlock all 6 components, specs, service mode and teardown

Full library + AI assistant for $34.90, one time.

Get lifetime access

Official manufacturer documentation

Always confirm values against the tech sheet for the exact model.

LG US dehumidifier error codes

OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work. © 2026 OnCall Tech. Original content; not a reproduction of any manufacturer document.Generic part photos (not of this brand): Close view of the louvered air outlet of a portable air conditioner by Curpharar, CC BY-SA 4.0

Diagnostic guides for this appliance

Guide · Dehumidifier

Dehumidifier error codes: general approach (sensor, bucket, pump)

Most portable dehumidifiers share the same code groups: sensor faults (E1/E2/EH), bucket (P1/FL), pump (E5/P2) and refrigeration protection (E3/EC). Power-cycle and basic checks fix many; sensor faults need a part.

4 steps ~30 mineasy

Guide · Dehumidifier

Dehumidifier won't turn on (no display)

Check outlet, cord and any reset button first. Then internal fuse, transformer (on some whole-house units) and the control board.

4 steps ~45 minmoderate

Guide · Dehumidifier

Dehumidifier humidity reading wrong or runs nonstop

Compare against a known-good hygrometer. A dusty or failed humidity sensor, a set point too low for the space, or an undersized unit makes it run nonstop.

3 steps ~30 mineasy

Other dehumidifiers manuals

Manual · Dehumidifier

Midea Cube dehumidifiers (MAD20S1QWT / MAD35S1QWT / MAD50S1QWT): quick sheet

Midea Cube 20, 35 and 50-pint portable dehumidifiers, with and without built-in pump. Midea has shipped more than one control-board generation under similar model numbers, so read the code set shown on the display.

8 components6 common failuresMidea

Manual · Dehumidifier

GE portable dehumidifiers (AHM / AHK series and APER / APHR 50-pint): quick sheet

GE portable dehumidifiers: older AHM30/40/65 and AHK30/40/50/65 families, and newer APEL/APEW/APER 50 and APHR50 (built-in pump). Code tables differ between generations; confirm on the model's owner's manual.

7 components5 common failuresGE

Manual · Dehumidifier

Santa Fe Compact70 and Advance90 crawlspace / basement dehumidifiers: quick sheet

Santa Fe (Therma-Stor) Compact70 and Advance90 stand-alone units used in encapsulated crawlspaces and basements; optional condensate pump kit shared across the Santa Fe line. Newer A2L-refrigerant versions exist; check the nameplate.

7 components5 common failuresSanta Fe (Therma-Stor)