20 Most Recent Ebac AD850 Dehumidifier Questions & Answers

• Make sure the drain pan is in all the way.
• The plastic housing gives many people trouble when reassembling. It has to be put on just so. Make sure you are clearing everything when sliding it back on.
• This housing has to be fiddled with when reassembling a bit. It will go back on.

Regards, Tony

The following statement is a parameter for all dehumidifiers and some of the control issues may vary, but the theory is the same.

Most dehumidifiers have a "Frost Guard" mounted on the condensor coil. If frost accumulates on the condensor coil the frost guard turns the compressor off until the frost melts, then comes back on again. For the dehumidifier to work properly, the surrounding (ambient), temperature must be higher than 65 degress. This temperature allows the moisture in the air to condense on the coils and drip into the reservoir without freezing up on the condensor coil. Also, if the humidity is too low, (below 45%), the same condition will occur. So it will help to keep the parameters in mind when you have this issue.
If your model does not employ a "Frost-Guard" the condition you describe will avail itself when the above parameters are not met.
Simply unplug, or turn off the unit, until the above parameters are met or exceeded.


Thank you for your allowing me to advise you on this issue.

Dave E. (Illeagle)

Just adding this as I found a basic design fault with my CD30... basically the defrost function runs after about 50 mins of operation, but what was happening was the unit was cutting off (because it had lowered the humidity to the set level) before the 50 mins had elapsed. The unit would then start again (with the coils still iced up) but never run for the 50 minutes needed to activate the defrost.. so a massive iceberg ended up building on the back of the unit! I modified the wiring of the unit so that the timer board is always powered, and the humidistat switches the neutrals of the compressor, fan and solenoid. This has totally cured the problem. Any decent electrician would be able to do this mod in a few minutes. I think the defrost circuit design has changed on newer models (probably because it was rubbish!!)

Hi, I have the same issue. I took off the plastic backside and managed a work around by removing the brown cable from the micro switch. It is now running again, but it won't get a signal when the water container is full ... so be aware when you start running it !

you could try ebay.or try asking google if there is a place near were you live.

This site might be able to help you. For the ebac 2850E manual. I could not find a "Z"850E Dehumidifier Instruction Manuals User Guides