Bosch condenser dryer not drying after support wheels fixed

[Badger_Boom]

Our Bosch condenser dryer (WTR85V21GB) developed a bad grating rumble a couple of weeks ago. It being well out of warranty and me being an adventurous type I decided I'd try and repair it myself.

Replacing the drum bearing didn't solve the problem, and a bit of research suggested the drum support wheels might be the culprit, and after changing them a couple of days ago it now turns freely and runs quietly.

But... now it doesn't dry properly. It doesn't seem to get as warm as it did before and after running for about four hours yesterday there didn't seem to be much if any water in the condensation container.

I have clearly created a new problem (not surprising given how much dismantling was required to get the drum out), but has anyone got any suggestion for what to check next.

 

[Wayners]

FYI.
We stopped using our tumble dryer and use a dehumidifier in a room.
Consider that for the future.

As for your problem I don't know. You can normally tell if bearing has gone but I don't know about support wheels.
You might need to get a multi meter and do some continuity testing and volt testing. Has the element got power and is it ok

 

[Gasguru]

It's a heat pump dryer.
Are you cleaning the moisture sensor and evaporator filter (behind the lower cover) on a regular basis ?

 

[pto]

why did you take the drum out no need just the side off

 

[morrisarmstrong]

Our Bosch condenser dryer (WTR85V21GB) developed a bad grating rumble a couple of weeks ago. It being well out of warranty and me being an adventurous type I decided I'd try and repair it myself.

Replacing the drum bearing didn't solve the problem, and a bit of research suggested the drum support wheels might be the culprit, and after changing them a couple of days ago it now turns freely and runs quietly.

But... now it doesn't dry properly. It doesn't seem to get as warm as it did before and after running for about four hours yesterday there didn't seem to be much if any water in the condensation container.

I have clearly created a new wacky flip problem (not surprising given how much dismantling was required to get the drum out), but has anyone got any suggestion for what to check next.

Nice job fixing the noise issue. Since the dryer now runs quietly but is not heating properly and there is little water in the condenser tank, the problem is likely related to heating or airflow. During reassembly, a heater connection may have come loose, or a thermostat or thermal fuse may have been disturbed. It is also possible that an air duct or seal is not fitted correctly, reducing airflow and heat buildup. I would start by checking all wiring connections, the heating element, and making sure the fan and air channels are properly installed.

 

[Justin Passing]

Not drying in the w/d's we've had has always been too much fluff in the condenser. One was a bosch.. Awkward job, you need strong bendy bits of wire you can make hooks on.

 

[Why Not Indeed]

the heating element,

Do condenser driers have a heating element?

 

[pto]

its a HEATPUMP dryer i thinck you have no gas left in it
is the compressor running ?

 

[ericmark]

Do condenser driers have a heating element?

Some do.

its a HEATPUMP dryer i thinck you have no gas left in it
is the compressor running ?

This was also my thought, we seem to assume all condenser driers work like our own, but water can be condensed out using room air, water, or refrigeration and putting the number into google it seems it is using the last method.

The problem, be it any type of refrigeration unit, AC, fridge, freezer, or tumble drier, to get it fixed needs a visit from someone with the kit, and the charge made for a site visit is around £60 before anything is done, cars not so bad we take the car to the garage.