How do you empty tank??? I can't find how to get

you can leave it turned off emptied in the unheated cottage. but i would not reccomend letting it run or stay with water in the tank. as water expand when it freezes. and will break the tank. also . dehumidifiers do nothing in freezing condition other than waste energy. so empty the tank and store it for the winter.

and your answer will appear right here :)

Sounds like the float valve inside tank may be stuck in closed position. Calcium buildup is very common. Good luck Juliana. Unplug and empty tank of any water and look for the float valve it should be near top of tank. Use a small bucket and mix vinegar and water and brush. Scrub that valve. Clean it up

The full light normally comes on when the tank is full. Emptying the tank and re-installing the tank should allow the system to reset. However, if the tank isn't pushed in all the way... the full switch and indicator light will be fooled into reporting a full condition. My suggestion is, first pull out the tank, look at the float and the tank full switch. Become familiar with these two items and confident that 1) the float is not stuck in the up position; 2) the tank full switch that the float is supposed to actuate will toggle (press your finger against it and let it return.) After this exercise make sure the tank is seated all the way in place. If your issue is mechanical, its easier to fix than if it's electrical, and if it is electronic... (just pray that it isn't).

Sounds like your float is stuck in the full position, or the sensor that shows full is stuck on full.
If tank is empty but shows full, problem lies where full signal is coming from.

If you mean you emptied it, and replaced the holding tank and now it doesn't work ... The holding tank probably didn't activate the safety trigger. Remove the tank and reinstall it, making sure that the tank triggers the safety switch. That should solve the problem.

There is a switch that is activated when you slide the tank back into the unit after you empty it. If the tank is not in just right it will not activate this swith. You might look for it and try pressing it with your finger to see if it is working. Not sure about your model but be careful not to shock youself! The switch should be insulated and is really just an interlocked relay...

Tank is not connecting with button/swith inside area where tank fits.

You may need to shim tank or use bungie cord to hold it in - the switch thinks that the tank has been removed

I thnk your tank is askew. Adjust the osition of the tank until the light goes off ...

Possible cause it's out of gas.

you might have to get a refridgeration mechanic to regas it, or/and fix any gas leaks

The tank may be full. Your dehumidifier has a safety device that turns off the dehumidifier when the water tank is full. Usually the tank itself either presses against a switch or there's a device connected to the tank that triggers a switch when the tank is in place and full.

If you've emptied the tank and the unit doesn't run, inspect the place where the tank rests to see if there's a switch or mechanism that's not being activated. You may be able to turn it on with a simple flick of your finger.