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.

Nikon Camera Error Codes

Complete Nikon Camera Guide

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

CHA

Memory Card Access Error

Remove and reinsert the memory card.
Inspect card contacts for dirt or damage.
Try a compatible replacement card.
Format the card in the camera if possible.

CHR

Memory Card Read Error

Back up any accessible files immediately.
Test the card in another device.
Reformat the card in-camera.
Replace the card if errors continue.

For

Card Formatting Required

Transfer important photos before formatting.
Use the camera's format function.
Verify card compatibility.
Replace damaged cards if necessary.

Card Err

Memory Card Error

Power off the camera.
Remove and reinstall the card.
Try another approved memory card.
Format the card after backing up data.

FEE

Aperture Ring Not Locked

Set aperture ring to the minimum aperture position.
Lock the aperture ring if applicable.
Detach and reconnect the lens.
Clean lens contacts carefully.

F--

Lens Communication Failure

Remove and reinstall the lens.
Clean electrical contacts.
Test another compatible lens.
Inspect lens mount for damage.

Err Lens

Lens Initialization Error

Turn camera off and back on.
Check lens movement for obstruction.
Reconnect lens securely.
Update firmware if available.

Err

Shutter Mechanism Failure

Power cycle the camera.
Remove battery for several minutes.
Reset camera settings.
Service the shutter assembly if persistent.

rErr

Image Processing Error

Wait for image processing to complete.
Use a faster memory card.
Reduce burst shooting frequency.
Restart camera if error remains.

AF Err

Autofocus System Failure

Clean lens and camera contacts.
Switch between AF and MF modes.
Test autofocus with another lens.
Service autofocus components if needed.

Focus

Unable to Achieve Focus

Increase lighting on the subject.
Select a different focus point.
Use manual focus mode.
Clean lens surfaces.

Batt

Low Battery Warning

Recharge the battery fully.
Install a charged spare battery.
Clean battery contacts.
Avoid extreme temperatures.

Battery Err

Battery Communication Error

Remove and reinstall battery.
Clean battery terminals.
Use a genuine compatible battery.
Replace battery if necessary.

Flash Err

Flash Unit Failure

Turn camera off and restart.
Check flash mechanism movement.
Inspect flash contacts.
Service flash assembly if required.

ERR

General Camera Malfunction

Turn camera off and restart.
Remove battery and memory card.
Reset camera settings.
Update camera firmware.

Internal System Error

Perform a complete power reset.
Remove external accessories.
Check firmware version.
Contact service if persistent.

Firmware Err

Firmware Problem

Verify firmware version.
Reinstall latest firmware.
Use a fully charged battery during update.
Restart camera after update.

FULL

Memory Card Full

Delete unnecessary files.
Transfer photos to a computer.
Use a higher-capacity memory card.
Format card after backup.

No Card

Memory Card Not Detected

Insert card correctly.
Inspect card slot for debris.
Try another compatible card.
Restart the camera.

Folder Full

Folder Number Limit Reached

Create a new folder in settings.
Transfer and archive images.
Format the memory card.
Reset file numbering if needed.

Frequently Asked Questions

Why is my Nikon camera not turning on?

Check if the battery is fully charged and properly inserted. Inspect the battery contacts for dirt or corrosion. Try a different battery or charger. If the issue persists, the power circuit may need servicing.

Why is my Nikon camera not focusing properly?

Ensure the lens is set to autofocus mode. Clean the lens and camera contacts. Check for low light conditions or subject movement. Reset autofocus settings if needed.

Why does my Nikon camera show a memory card error?

Remove and reinsert the SD card. Try formatting the card in-camera. Test with a different compatible memory card. Check if the card is locked or damaged.

Why is my Nikon camera not saving photos?

Check if the memory card is full or write-protected. Format the card after backing up data. Ensure the camera is not in a temporary save mode or battery-saving interruption state.

Why is my Nikon camera lens not working properly?

Detach and reattach the lens securely. Clean the lens contacts gently. Test with another compatible lens. Inspect for physical damage or misalignment.

Why does my Nikon camera display an error message?

Error messages may indicate lens communication failure, shutter issues, or system faults. Turn the camera off, remove battery and memory card, then restart the system.

Why is my Nikon camera battery draining quickly?

Battery drain may be caused by cold temperatures, continuous Live View usage, or an aging battery. Turn off Wi-Fi/GPS features and replace the battery if performance is weak.

Why is my Nikon camera overheating?

Overheating can occur during long video recording or continuous shooting. Turn off the camera and allow it to cool. Avoid direct sunlight and reduce continuous operation time.

Why is my Nikon camera shutter not working?

Check if the camera is in bulb mode or locked state. Ensure the battery is charged. Inspect for error codes or mechanical shutter failure. Reset the camera settings.

Why is my Nikon camera showing blurry images?

Blurry images may be caused by incorrect focus, slow shutter speed, or dirty lens. Clean the lens, adjust focus mode, and increase shutter speed in low light conditions.

Why is my Nikon camera flash not working?

Ensure flash is enabled in settings. Check if external flash is properly attached. Low battery or overheating may disable flash temporarily. Reset flash settings if needed.

Why is my Nikon camera not connecting to Wi-Fi?

Check Wi-Fi settings and ensure the feature is enabled. Restart both camera and device. Update firmware and ensure compatibility with the Nikon app.

Why does my Nikon camera freeze or lag?

Freezing may be caused by corrupted memory cards, firmware issues, or overloaded buffer memory. Restart the camera and update firmware if available.

How do I reset my Nikon camera?

Turn off the camera, remove the battery for 5–10 minutes, then reinsert it and power on. You may also use the factory reset option in the settings menu.

Why do Nikon camera problems keep returning?

Recurring issues may indicate faulty lenses, aging batteries, firmware bugs, or internal hardware problems requiring professional repair.

When should I call a technician for my Nikon camera?

Contact a technician if the camera shows persistent error messages, lens failure, shutter malfunction, or does not power on after troubleshooting.

Important: If your Nikon camera continues to malfunction after troubleshooting, stop using the device. Persistent issues may indicate internal hardware failure, sensor damage, shutter problems, or motherboard faults. Continued use may worsen the damage. Contact an authorized Nikon service center for proper diagnosis and repair.