Beko DCL 1560 condensor dryer. After starting the dryer the filter and water tank lights come on with a bleep. the filter is clean and the water tank is empty. Any help please.

check the mains filter/suppressor which may have blown

A GOOD LOCAL REPAIR SERVICE

The place I would start is to remove the vent hose from the dryer to exit wall and examine it for clogs then the other place to look for a typical clog point is the outside vent. If these ideas aren't your problem the dryer outer housing will have to be dismantled, this is a good sized job and you will need the repair manual for your beco for proper tear down and assembly.

check dampness senser may still have lint trapped around it
also poss. stuck button on control board

Stat or heater check power if it is a 220 volt machine may have one side down on power

not too many dryers w water tank, but the air filter light maybe due to a lack of air movement. If you have replaced an old machine, then your problem may be with the existing exhaust and duct work, you'll need to clean them out thoroughly to know. You may have to go outside or up on the roof as sometimes these also have trap doors that become stuck.

Clean the exhaust line connected to the rear of the dryer.
Run a load of laundry with the rear duct removed completely and see if the light comes on.

As a matter of fact I have solved the problem. The dryer is now fully functioning again. :-)
I'll try to explain how to fix the problem:
The water that condenses in the condensor (doh!) drips down into a container situated below the condensor. The moist air that passes through the condensor is the same air that circulates via the clothes, thus it also contains some lint that the filter doesn't catch. Over time there will be some build-up of lint and mucus (?), clogging the tank AND a sensor that sends a signal to the electronics to start the pump that evacuates the condensed water to the removable tank in the upper part of the machine. This messes up the function of the water evacuation system.
Alright, pull out the condensor and find a hatch in the 'floor' in the farther part of the compartment. Below the hatch you'll find the container that collects the condensed water. Start by cleaning it as thoroughly as you can. There are a few 'nooks and crannies', take your time, also flush with some fresh water and maybe some gentle cleanser to get rid of the mucus. The pump and the sensor for the pump are located in the left part (viewing from front of the machine) of the container. Try to flush there as well.

If this procedure doesn't solve the problem you'll have to disassemble the machine to also be able to remove the pump and sensor housing. I had to do this on mine. Quite a few screws to remove and keep track of, but pretty straight forward if aren't too uncomfortable with 'fixing things'.

I have some pictures of the 'project' somewhere, let me know if you would like to see them or if I may help you some other way.

BR /Hans

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.

Under the water bottle is a drain hole,when the bottle overflows water runs down this hole through a pipe to a reservoir behind the condensor unit, there is a float in this reservoir that rises and clicks a switch that activates the full tank light and stops the machine working,
removing the stopper at the rear and emptying the reservior should do the trick,If the float does not go back down due to dirt in the machine the left hand side panel can be removed by taking off the top then the retaining screws,one inside at the top the rest in the back panel,remove the one screw holding the float switch unit and clean the black float.(Make sure it's not plugged in)