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.

Ninja Coffee Maker Error Codes & Troubleshooting Guide

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

CLEAN

Cleaning Cycle Required

Run built-in cleaning cycle immediately.
Use approved cleaning solution.
Flush system with clean water.
Repeat if buildup persists.

DESCALE

Descaling Required

Use descaling solution or vinegar mix.
Run full brew cycle without coffee.
Rinse system 2–3 times.
Repeat monthly for maintenance.

ADD WTR

Water Tank Empty

Refill water reservoir.
Ensure tank is properly seated.
Check float sensor movement.
Restart brewing cycle.

ADD BEANS

Bean Hopper Empty

Add fresh coffee beans.
Check grinder hopper lid.
Ensure beans are not jammed.
Restart grinder cycle.

LOCK

Control Lock Active

Hold lock button for 3–5 seconds.
Disable child lock in settings.
Restart machine.
Check keypad response.

Water Flow Issue

Check water line blockage.
Clean internal tubing.
Descale machine.
Inspect pump operation.

Heating System Fault

Turn off and unplug unit.
Check heating element connection.
Inspect thermal fuse.
Replace heating component if needed.

Grinder Jam

Remove beans and clear blockage.
Clean grinder blades.
Check motor rotation.
Service grinder if needed.

Temperature Instability

Run descaling cycle.
Check thermostat sensor.
Inspect heating system.
Reset machine.

Pump Failure

Check pump blockage.
Inspect tubing system.
Test electrical connection.
Replace pump if faulty.

Heating Element Failure

Disconnect power immediately.
Inspect heating coil.
Check relay board.
Replace heating element.

Sensor Error

Check wiring connections.
Clean internal board area.
Restart system.
Replace sensor if needed.

Brew Timeout

Check water flow speed.
Clean filters and tubes.
Reset machine.
Run cleaning cycle.

Low Water Pressure

Check water supply pressure.
Clean inlet valve.
Inspect pump performance.
Descale system.

E10

Overflow Detected

Empty drip tray.
Check float sensor.
Clean drainage system.
Restart machine.

E11

Airlock in System

Prime water pump.
Run flush cycle.
Check tubing blockage.
Restart machine.

E12

System Reset Required

Unplug for 10 minutes.
Restart machine.
Check moisture damage.
Replace PCB if needed.

ERR WATER

Water Not Detected

Refill tank.
Check float sensor.
Clean connectors.
Restart machine.

ERR GRIND

Grinder Failure

Remove blockage.
Clean grinder blades.
Check motor function.
Service if needed.

SYS FAIL

System Failure

Power cycle machine.
Check PCB.
Inspect wiring.
Call technician.

Frequently Asked Questions

Why is my Ninja Coffee Maker not turning on?

Check if the coffee maker is properly plugged in and the power outlet is working. Ensure the water reservoir is correctly seated and the lid is closed. Try a different outlet. If still unresponsive, the power board may need inspection.

Why does my Ninja Coffee Maker suddenly stop during brewing?

This is usually caused by overheating protection, clogged water flow, or a misaligned brew basket. Turn off the machine, unplug it, and allow it to cool for 10–15 minutes before restarting.

Why is my Ninja Coffee Maker not brewing coffee properly?

The water line may be blocked or the coffee grind too fine. Clean the system, check water flow, and ensure the brew basket is not overfilled or clogged.

Why does my Ninja Coffee Maker smell like burning?

A burning smell may indicate scale buildup or overheating. Stop using immediately, unplug the unit, and run a descaling cycle before restarting.

Why is my Ninja Coffee Maker leaking water?

Check that the water reservoir is properly seated and not cracked. Inspect seals, drip tray, and brew basket alignment for leaks or damage.

Why is my Ninja Coffee Maker making loud noises?

Loud noises may come from air trapped in the pump, clogged water lines, or mineral buildup. Run a cleaning cycle and check internal tubing.

Why does my Ninja Coffee Maker show E1?

E1 indicates a water flow issue. Check for clogged tubes, refill the water reservoir, and run a descaling cycle.

Why does my Ninja Coffee Maker show E2?

E2 indicates a heating system fault. Unplug the unit, allow it to cool, and inspect heating components or thermal fuse.

Why does my Ninja Coffee Maker show E3?

E3 usually refers to grinder or brew blockage. Clean the grinder area, remove coffee buildup, and restart the machine.

Why does my Ninja Coffee Maker show E4?

E4 indicates temperature instability. Run a descaling cycle and check the thermostat sensor for proper operation.

Why does my Ninja Coffee Maker show E5?

E5 means water pump malfunction. Check for clogs, inspect tubing, and restart the machine after cleaning.

Why does my Ninja Coffee Maker show E6?

E6 indicates heating element failure. Unplug the machine and inspect internal heating components for damage.

Why does my Ninja Coffee Maker show E7?

E7 refers to sensor communication error. Restart the machine and ensure all internal connections are secure.

Why does my Ninja Coffee Maker show E8?

E8 indicates brew timeout. Clean filters, check water flow, and run a full cleaning cycle.

Why does my Ninja Coffee Maker show ERR WATER?

Water supply is not detected. Refill the reservoir, clean sensors, and ensure proper seating of the tank.

Why does my Ninja Coffee Maker show ERR GRIND?

Grinder jam detected. Remove beans, clean grinder components, and check motor operation.

How do I reset my Ninja Coffee Maker?

Turn off and unplug the machine for 10–15 minutes. Reconnect power, refill water, and restart with default settings.

Why do Ninja Coffee Maker problems keep coming back?

Recurring issues may indicate scale buildup, pump wear, sensor failure, or electrical instability requiring servicing.

When should I repair my Ninja Coffee Maker?

Seek repair if the machine fails to heat, does not pump water, shows repeated error codes, or stops mid-brew consistently.

Important: If your Ninja Coffee Maker continues to malfunction after troubleshooting, stop using it immediately. Persistent faults may indicate pump failure, heating element damage, control board issues, or internal electrical problems. Contact an authorized Ninja service center for proper diagnosis and repair.