Bosch condenser dryer not drying after support wheels fixed

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

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.
Sprunky
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.
That comparison to the car garage is so valid. If we could just "drive" our broken tumble dryers to a central repair hub, the costs would plummet. Instead, we’re stuck paying for a technician’s transit time and overhead just to get a diagnosis. It feels like we’ve traded the simplicity of old-school resistive heating for a complex system that effectively has a "self-destruct" timer once the refrigerant or compressor hits a snag.
 
That comparison to the car garage is so valid. If we could just "drive" our broken tumble dryers to a central repair hub, the costs would plummet. Instead, we’re stuck paying for a technician’s transit time and overhead just to get a diagnosis. It feels like we’ve traded the simplicity of old-school resistive heating for a complex system that effectively has a "self-destruct" timer once the refrigerant or compressor hits a snag.

Thank you for that well considered, rather obvious, and unnecessary response, to an old thread. Without your advice, we would never have known that.
 
I don't know about you, but my car will not transport large stuff. I used to have a Renault Kango mobility car not much bigger to the Honda Jazz I drive now, but could easily winch large domestic units in it. The Honda Jazz does have a good seat arrangement for back seats, and my folding e-bike will fit, but since the Kia Sorento went, I don't have a car to carry large stuff in. Wife's Jag is useless for anything large.

So to hire a van would cost as much as the visit. Not even got a trailer I could use, as no towing on any of my cars.

I looked at the driers, and did not want to core drill a hole in the wall, the old vented went out of the window, and it would dry at ½ heat setting in 90 minutes in the main some times would need setting off again, but it was using around 1.5 kWh per load, the washer drier we still have, rarely used, gets clothes far too hot for my liking, and uses water cooling, so heat does not go into the room, but not found a stand alone tumble drier with water cooling, they all seem to use air cooling, the the unit makes the room hot, since the utility room is small, this is not really a good idea, the hotter the air in the room the less efficiently it works. Plus they seem to use more energy to the vented at 1 kW.

So we went for the heat pump type, they do not heat up the room as much, and they use around 650 watts, but take a long time, around 2.5 hours, near the end often it does use a mark/space ratio so not using 650 watts for whole of cycle, but maths shows cost is about the same to run as the vented (set at 1 kW) the advantage is window closed, or no hole in the wall. And the drum is a little larger, so we are drying more clothes, so it is a little cheaper to run, but not by any large margin, it only just tips the balance.

Yes I would get another, suits me to not have it against outside wall, it also has some extra features like sensing when clothes are dry, and having a delay start timer so it can run using off-peak.

Although in the main we use solar to dry the clothes, the panels on the roof move the solar energy into the tumble drier.

The first heat pump drier failed in warranty and I still had the Kia Sorento, it was inspected in the house, but lived too far away from the shop for them to deliver, so had to take the old one back and collect a new one.

Looking at cars and the AC, not sure I would want a repair, as it seems once they leak out the refringent once, they do it again and again, and it is a case of recharging it every year. I don't think I have ever had a fridge or freezer re-charged, by time they fail, its a bit of a mess anyway, and always gone for new.

Not sure how long inverter drives last? The freezer is less noisy at start, so would think it will last longer, but capacitors do fail, and after 10 years would you want a repair, or would it be one thing after another once it fails the first time?
 
Looking at cars and the AC, not sure I would want a repair, as it seems once they leak out the refringent once, they do it again and again, and it is a case of recharging it every year. I don't think I have ever had a fridge or freezer re-charged, by time they fail, its a bit of a mess anyway, and always gone for new.

Mine ran without any problems, for a very long time, until the 'radiator' (name?), leaked at the front. At great expense, I had that replaced, it checked for leaks, and topped back up - whereupon, it failed again within months, loosing all its gas. Rather than paying someone to sort it out, I bought a top-up kit, which claimed to seal leaks. Since when, it has worked just fine.
 

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