What does E1 mean on the display of my dehumidifier

You get that info from the mfg or manual.

Hi, fusiti. We're sorry to hear about the difficulty with your Dehumidifier. Below are links to our Use & Care guides, Parts Diagrams, Troubleshooting information and the Service are of our website. We hope this helps! http://bit.ly/112Lu7q

On models a lttle later than yours E1, indicates that the air intake filter needs to be removed and cleaned. Probably, the same thing as yours. Before doing so, turn the Master ON/OFF Switch to OFF and unplug the unit. If you wash the filter use warm water and dish washing liquid, Rinse thoroughly and allow to completely before reinstalling. DO NOT operate the unit without the air filter in place.

Hope this helps you to troubleshoot and solve the problem.

Code E 5 what does it mean?

E1 code for the primary humidity sensor behind right side grill. Unit MUST be unplugged from outlet. Take right side grill out, unplug sensor from wire socket and plug back. If no help, you need new sensor.

E1 code for the primary humidity sensor behind right side grill. Unit MUST be unplugged from outlet. Take right side grill out, unplug sensor from wire socket and plug back. If no help, you need new sensor.

Water bucket full or switch is depressed under the bucket, check.

Danby's Consumer Help Line (1-800-263-2629) is always busy. So, I called their General number: 419-425-8627. The receptionist transferred my call to their Service dept. My call was answered in 2 minutes.

The Service Rep. described the following code for my dehumidifier model (DDR657EE):
P1 = Defrosting: the unit will go into Defrost mode periodically to ensure that the parts are working at the right operating temperature. It should be in Defrost (P1) mode for only a brief period of time. If the unit is in Defrost (P1) mode continuously for a couple of hours (or more), then you should call Danby Service for further assistance.

He had no documentation of a P2 code for my model.

He also described other General Codes (applicable to most Dehumidifier/Humidifier models):
E1 = Not enough water
E2 = Not draining
E3 = Water temperature too cool
E4 = Overflow Switch activated
E6 / E7 = Problem with Temperature Sensor

I hope that helps.

unit has a sealed system leak call sears for tech support 1-800-905-9505 it is under warranty

I dropped the water bucket by accident on the dehumidifier, and I have the same problem. Here what I found :
First, remove the water bucket and find the circuit diagram, it is very useful.

E1 code is related to the room humidity sensor, E2 code is related to the room temperature sensor and E3 code is related to the safety thermistor sensor. If you have one of these error code displayed, you will probably have to replace the sensor.

The humidity and temp sensors are located on the same board. To access it, remove the water bucket and you will see the 2 screws holding the front panel. Remove the screws, then gently prayed the front panel. Be careful, there is two plastic clip on the top of the panel and they are really easy to break. The board is located at the top right, under the cover. The safety thermistor is located on a pipe on the right side of the dehumidifier.