Zanussi ZDCB 37209W says tank is full when it is not

Return it back to the place of purchase and buy a different brand of dryer. Try Whirlpool or Sears Kenmore. You should have much better luck with these name brands.

Since it is new, I would call the mfr and have them look at it. It is under warranty isn't it?

Most dehumidifiers have a switch near the top right of the tank or left. When the tank gets full it tips out a bit and trips the switch to turn it off and light the indicator. Make sure the tank is sitting properly as I have done this before, and had the same problem, or check and adjust the sensor(if possible) to fix the problem. The tank not sitting right can cause it to trip the switch with a mostly empty tank.

It can be mechanical or electrical malfunction. I would check tank microswitch, float and lever.
Below is explained how the condensate drainage system works and that will facilitate fault detection.

The warm and cold air circuits cross inside the heat exchanger, which results in a thermal exchange which condenses the humidity contained in the warm air. The condensation which forms in the heat exchanger is collected in a sump, from which it falls by gravity into a tank. When the water in the tank reaches the max. level, the level of the water in the sump increases, which causes the float to move upwards, thus actioning a microswitch; The microswitch for dryers with electronic board sends a signal to the electronic circuit when the tank has been filled, switches off the appliance and lights a pilot lamp which indicates to the user that the tank is full. The microswitch with electromechanical control switches off the dryer (the timer motor is powered and ends its cycle) and lights a pilot lamp which indicates to the user that the tank is full.

Dado

Pat, Have you found a solution to this yet? I have got exactly the same fault today ! Having taken the top & left side of the dryer off, I found what looks like a broken drive belt - not the main drum drivebelt which is fine, but a shorter one (about 18cm diameter loop) with no obvious place for it to have come from. Any clues would be appreciated. Dave ([email protected])

I have just fixed this as below - your leak may be easier to see if you turn the machine on its front - there is a rear valve with a rubber bung and underneath a rubber pipe with a metal clip - check both for leaks - http://www.fixya.com/support/t4079509-full_water_indicator_lit_continuously

its either going to be fluff in the float which you can get at by taken the side panel off .or its fluff in the valve behind the water tank

Sounds like the condense pump is bad. Replace it, or look if there is lint in it. ;)

This is the problem of your dryer's circut board. call the person from whom you have buy this and if dryer has gaurenttie period then replace if you want to get relief in future. ANKAJ

Look for the sensor in the tank. If it is a float sensor then check it is not stuck. If it is a probe then clean the insulator.