Dehumidifiers Blog

Midea Dehumidifier Error Code e6

September 10, 2026

Fix Midea Dehumidifier Error E6 – DIY Guide

ERROR CODE E6

How to Fix Midea 50 Pint Dehumidifier

Professional DIY repair guide for humidity sensor faults. Save $150+ on service calls.

                    Quick Answer: Error Code E6 indicates a humidity sensor fault or communication failure between the sensor and main control board. The root cause is typically a disconnected wiring harness, corroded sensor probe, or failed thermistor.
                

⚡ Quick Fix / Soft Reset

Clear temporary logic glitches before opening the machine:

1 Turn the unit off using the power button on the control panel

2 Unplug the power cord directly from the wall outlet

3 Press and hold the power button for 30 seconds to drain residual power

4 Wait for 5 full minutes to let the motherboard completely reset

5 Plug the unit back in and turn it on. If E6 returns, proceed to physical troubleshooting

🔧 Step-by-Step Troubleshooting

🔧 Tools Needed: Phillips screwdriver, flathead screwdriver, digital multimeter, needle-nose pliers

Inspect the Humidity Sensor Wiring Harness

How to access: Unplug the dehumidifier. Remove the screws securing the back panel. Gently pry the plastic clips along the top seam using a flathead screwdriver and lift the top housing to expose the control board.

What to check: Locate the humidity sensor harness (a small wire bundle leading to a probe near the air intake). Trace the wire from the control board to the sensor. Disconnect and reconnect the plug at the board to ensure the pins are seated tightly. Look for any pinched, frayed, or chewed wires.

Test the Humidity Sensor (Thermistor)

How to test: Disconnect the sensor plug from the main control board. Set your multimeter to the Ohms (Ω) or resistance setting. Touch the metal probes to the two pins inside the sensor harness plug.

                            What to look for: At normal room temperature (around 70°F/21°C), a working Midea sensor should read between 10kΩ and 15kΩ. If your multimeter reads “OL” (open loop/infinity) or “0” (shorted), the thermistor is dead and must be replaced.
                        

Inspect the Main Control Board

If the sensor tests within the correct resistance range, the issue lies on the board.

What to check: Visually inspect the control board where the sensor harness plugs in. Look for burnt traces, bulging capacitors, or corroded solder joints around the sensor pins. Check the main relay for scorch marks. If the board shows physical damage, it cannot process the sensor data and will trigger E6.

🛒 Parts Replacement

If your multimeter test in Step 2 fails, you need to order a replacement Humidity Sensor Harness (often sold as a humidity sensor probe assembly). Search for your exact model number (e.g., Midea MAD50PS1WWT) or use the OEM part number listed in your manual.

💡 Alternative Solution

If the exact OEM harness is discontinued or on backorder, you can bypass the dealer markup. Purchase a generic 10k Ohm or 15k Ohm NTC thermistor probe with a matching 2-pin JST connector from Amazon or AliExpress. Ensure the resistance rating and physical probe length match your original part. Simply plug the generic harness into the existing board connector and route the probe to the original mounting location.

⚠️

Repair vs Replace

Be honest with yourself about the economics of the repair before spending more money.

If your troubleshooting in Step 3 reveals a fried main control board (burnt traces or a failed relay) and the unit is out of warranty, buy a new dehumidifier. A replacement control board costs between $80 and $120; combined with your time and effort, it approaches the cost of a brand-new 50-pint unit.

If you notice thick ice buildup on the evaporator coils, or the unit blows room-temperature air while the compressor hums loudly, you have a sealed system refrigerant leak. Do not attempt to repair a refrigerant leak yourself. It requires EPA certification and expensive recovery equipment. In this scenario, recycle the broken unit and invest in a new, energy-efficient model.

Important Decision

Michael And.