WTL 5410 getting E1 error message. Condenser hose seems unblocked. Pool of water behind the heat exchanger

SOURCE: Dryer drum will not turn

sounds like a power promblem to me check at out let for 220 volts if you have it there first turn circete breaker off then on try drier if that dont get it check for power at outlet with meter if 220 is there after unplugging drier check cord at back of drier at terminal block if all thats ok then you have a bad door switch a bad start switch or a bad thermal limiter last and rare bad drive motor

SOURCE: Water builds up behind heat exchanger

I don't know if there is a cure for this. Bosch never answers my calls or my e-mails, but I have found that by blowing in the hose to disengage the lint collecting there and then sucking out the line will remove nearly all of the build up amd drying will resume.

SOURCE: Re-set button location?

you need to remove the back panel the smaller one that covers heater matrix you will find a thermostat with a red reset button on it when you push it it will click and reset however you should find out why this happened before you use it again as it only does this if it overheats.

hope this helps

SOURCE: bosch axxis wtl 5410 dryer takes too long to dry.

You should have a cycling thermostat. this is most likely bad or your dryer vent may be clogged. Something is cutting the heat off before it gets hot enough. Both these cause this problem.

SOURCE: How to un-stack Bosh Washer WFL 2060/Dryer WTL 5410

Did you ever get an answer? I have the same problem...