Bosch Heat pump Dryer WTW84560GB/11

[M1]

Not getting HOT

No fault codes or lights flashing on screen, any ideas this is the first one I have looked at.

HEAT PUMP dryer

[electrofix]

Re: Bosch Heat pump Dryer WTW84560GB/11

if its the first heat pump dryer you have looked at you have to understand how they work. not that I doubt your knowledge but you have to think a different way

a normal dryer heats the air with an element, this evaporates the water, and the condenser that’s cooled with air from the room takes the saturated air and condenses it out

now a heat pump dryer has no heater so in effect its a de-humidifier in a box. the air is blown around the case across the clothes, This air is passed through a cooled heat exchanger (evaporator) so it forms condensation and reduces the humidity of the air this then passed through the condenser of the system and flows back to the clothes. the only heat in the system is waste heat from the compressor
so in essence they don’t get very hot at all, more like slightly lukewarm

you need to find out if the compressor is running and check all the filters

Dave

[M1]

Re: Bosch Heat pump Dryer WTW84560GB/11

Yep

I have read up on them and yes the compressor is getting lukewarm. I shall check for blockages and filters.

Thanks

[smartin]

Re: Bosch Heat pump Dryer WTW84560GB/11

The other important thing is that it takes about 15 mins before any heat can be felt inside.

Martin

[Author]

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