Zanussi condenser drier: tank full light on even though empty

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.
The tank capacity is about 3.5 lt., enough for a drying cycle.

- Remove the screw (1) which secures the support micro and use a screwdriver for the two hooks which secure it to the sump.


- Lift them simultaneously and unthread the micro support towards outside

Putting upside down the support you can access the floating microswitch.
Inside the sump there is the float.
To extract it rotate the float 90° clockwise as shown.
Lift it up, rotate it towards outside and extract it.



While reassembling the pump, the float and the tank microswitch, repeat the same operations backwards, paying attention that when the micro support is remounted it is necessary to use a screwdriver in the fissure (indicated by the arrow), to lift the micro lever and lean it over the float (if this operation is not carried out the lever of the micro comes up alongside the float (it deforms) and the two components do not function anymore.


Dado

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.

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

Hello, before call the specialized service try this:
Turn off and unplug the dryer from the main supply.
Open the main door of the dryer and with your hand attempt to move the drum up several times.

I experienced the problem with a hotpoint TCYM 750, with the red empty water light failing to switch off. After removing the filter and cleaning it, cleaning the condenser and drying anywhere I had access to the machine still didn't heat and the light remained on. Reading the post about the machine having 3 reservoirs it struck me that one of the reservoirs may be hard to access. So I unplugged the machine and tipped it onto its front. The reservoir drained, I pushed the machine back upright and cleared up some water around the condenser. The drier now works properly and the empty water light is off - job done!

the float down by the pump might be stuck......or the pump could be knackerd,................cheers

Make sure lint build up is clear behind condenser

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])

excess water seems to be lodged in the drier and was drained out.There is a drain at the rear of the machine. I am concidering connecting a pipe here and draining permently to the outside.

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