What does LG AC error code CH 01 mean?

CH 01 indicates a communication error between the indoor unit and system, usually caused by wiring issues or connection failure.

How do I fix LG CH 03 error?

Check drain hose blockage, inspect drain pump, clean drain pan, and restart the unit.

Is LG CH 38 dangerous?

Yes. CH 38 indicates a refrigerant leak. Turn off immediately and contact a technician.

Can LG AC errors reset automatically?

Some errors reset after turning off power for 5–10 minutes and restarting the unit.

Why does my LG air conditioner keep showing error codes?

Common causes include sensor failure, dirty filters, wiring issues, or unstable power supply.

When should I call a technician for LG AC errors?

Call a technician if there is compressor failure, refrigerant leak, PCB issue, or repeated errors after reset.

Shark Robot Vacuum Error Codes

Complete Shark Robot Vacuum Guide

This guide explains all Shark Robot Vacuum error codes (CH series) with simple troubleshooting steps to help you identify and fix common issues safely before calling a technician.

Main Brush Obstruction

Turn off the robot vacuum.
Remove debris from the brush roller.
Check for tangled hair or threads.
Reinstall brush and restart cleaning.

Side Brush Jammed

Inspect side brush for obstructions.
Remove hair and debris buildup.
Ensure brush rotates freely.
Restart the robot vacuum.

Suction Motor Error

Empty the dust bin.
Clean filters and air pathways.
Check for blockages in suction channel.
Restart unit after cleaning.

Wheel Motor Fault

Inspect wheels for debris.
Ensure wheels move freely.
Check wheel motor operation.
Restart robot after inspection.

Navigation System Fault

Move robot to an open area.
Clean navigation sensors.
Remove obstacles from cleaning path.
Restart mapping process.

CLIFF

Cliff Sensor Error

Clean cliff sensors underneath robot.
Move unit away from reflective surfaces.
Place robot on flat flooring.
Restart cleaning cycle.

SENSOR

Navigation Sensor Blocked

Clean front and side sensors.
Remove dust buildup.
Check for physical damage.
Restart robot vacuum.

MAP

Mapping Failure

Clear obstacles from room.
Ensure adequate lighting.
Restart mapping function.
Reset robot map if necessary.

LOCATE

Positioning Error

Move robot to charging dock.
Check sensor cleanliness.
Restart navigation system.
Rebuild map if issue continues.

WHEEL

Wheel Jam Detected

Turn off robot vacuum.
Remove debris from wheel assembly.
Check wheel suspension movement.
Restart unit after cleaning.

WHEEL-L

Left Wheel Motor Error

Inspect left wheel for blockage.
Clean wheel housing.
Check motor movement.
Service motor if issue persists.

WHEEL-R

Right Wheel Motor Error

Inspect right wheel for obstruction.
Clean wheel assembly.
Verify free wheel movement.
Replace motor if necessary.

BRUSH

Brush Roller Jammed

Remove brush roller.
Cut away tangled hair.
Clean roller bearings.
Reinstall and test operation.

BRUSH-L

Brush Motor Error

Inspect brush motor assembly.
Check for debris buildup.
Verify electrical connections.
Replace motor if faulty.

SIDE

Side Brush Failure

Inspect side brush movement.
Remove hair and debris.
Check mounting screw.
Replace brush if damaged.

BIN

Dust Bin Full or Missing

Empty dust container.
Reinstall dust bin securely.
Clean sensor contacts.
Restart cleaning cycle.

FILTER

Filter Blocked

Remove and clean filters.
Allow washable filters to dry.
Replace worn filters.
Restart robot vacuum.

CLN

Cleaning System Blocked

Inspect suction pathway.
Remove debris from air channels.
Clean filters thoroughly.
Restart cleaning cycle.

DOCK

Docking Station Not Found

Ensure dock has power.
Move dock to open location.
Clean charging contacts.
Restart return-to-dock function.

CHARGE

Charging Error

Inspect charging contacts.
Clean dock terminals.
Verify power adapter operation.
Reconnect charging dock.

BATTERY

Battery Fault

Fully recharge the battery.
Inspect battery connection.
Restart robot vacuum.
Replace battery if capacity is low.

LOW BAT

Battery Critically Low

Return robot to charging dock.
Allow complete recharge.
Check dock power supply.
Resume cleaning after charging.

WIFI

Wi-Fi Connection Error

Check router signal strength.
Restart router and robot.
Reconnect through SharkClean app.
Verify network password.

APP

App Communication Error

Close and reopen mobile app.
Check internet connection.
Reconnect robot to account.
Update app and firmware.

UPDATE

Firmware Update Failed

Ensure stable Wi-Fi connection.
Keep robot on charging dock.
Retry firmware update.
Restart robot if update stalls.

Frequently Asked Questions

Why does my Shark Robot Vacuum show ERR or system error messages?

ERR messages usually indicate issues such as blocked sensors, navigation errors, brush roll obstructions, wheel jams, charging problems, or communication faults. Turn off the robot vacuum, clean all sensors and moving parts, then restart the unit.

Why does my Shark Robot Vacuum stop during cleaning?

The robot may stop due to low battery, obstacle detection, overheating protection, full dust bin, or a blocked brush roll. Remove any obstructions, empty the dust bin, and restart the cleaning cycle.

Why does my Shark Robot Vacuum not turn on?

Check that the battery is charged and the charging dock is connected properly. Inspect charging contacts for dirt or corrosion and allow the robot to charge for several hours before attempting to power it on.

Why does my Shark Robot Vacuum keep getting stuck?

The robot may become trapped by cables, rugs, furniture, or clutter. Clear the cleaning area, secure loose wires, and ensure navigation sensors are clean and unobstructed.

Why does my Shark Robot Vacuum move in circles?

Circular movement is often caused by dirty navigation sensors, wheel problems, or mapping issues. Clean all sensors and wheels, then restart the robot to rebuild its navigation path.

Why does my Shark Robot Vacuum have weak suction?

Weak suction is commonly caused by a full dust bin, clogged filters, blocked airflow, or debris in the brush assembly. Clean the dust bin, filters, and suction pathway thoroughly.

Why does my Shark Robot Vacuum make unusual noises?

Unusual sounds may result from tangled hair, debris inside the brush roll, wheel obstruction, or worn moving components. Turn off the robot and inspect all rotating parts before restarting.

Why does my Shark Robot Vacuum brush roll stop spinning?

Hair, threads, and debris can prevent proper brush rotation. Remove and clean the brush roll, check end caps, and ensure the brush motor area is free from obstruction.

Why does my Shark Robot Vacuum not return to the dock?

This may be caused by blocked sensors, poor dock placement, weak battery charge, or navigation issues. Ensure the dock has adequate clearance and clean the charging contacts.

Why does my Shark Robot Vacuum battery drain quickly?

Rapid battery drain may occur due to aging batteries, excessive cleaning cycles, or charging issues. Fully recharge the battery and replace it if runtime has significantly decreased.

How do I reset my Shark Robot Vacuum?

Turn the robot vacuum off, wait several minutes, then power it back on. Some models may require pressing and holding specific buttons to perform a factory reset.

When should I service my Shark Robot Vacuum?

Service is recommended if the robot repeatedly displays errors, fails to charge, loses navigation capability, experiences motor problems, or continues malfunctioning after cleaning and resetting.

Important: Shark Robot Vacuum system messages are designed to protect the battery, motors, navigation sensors, and cleaning system. If problems continue after troubleshooting, discontinue use and contact an authorized Shark service center for assistance.