Grundig heat pump dryer GTN38267GCW

[Shroppyfly]

Good morning experts
I was given one of these and the people said it doesn’t heat up, so armed with basis knowledge i thought id have a go , a few things i can tell you you, when the dryers running , the small tower pc style fan at front bottom right isn’t turning, now not sure whether it kicks in , or should be running all the time, i removed it it put 240v to it and it spins fine, thats first query m 2nd the two i think NTC thermostats, one to the left of that fun, and the other, in one of the pipes from the compressor, put a multimeter on them and both register continuity, i think, well the digi readouts the same , in ohms yes?
Then theres the fact, that the people either had the fluffiest laundry in uk, or a family of 67 Hamsters lived in the dry as it was a good 6 inches deep , i have to say at moment the dryer is stripped down so i could check/hoover out the evaporator
Am i checking things correctly? is there anything else i can check, orhi also cleaned the moisture sensors ( just inside the door) again continuity seemed fine, if i checked it right?

Thanks in Advance
James

[electrofix]

leave the right hand side off

run the dryer with damp clothes in

let it run and see if the compresor gets warm

I am tring to find out if the compressor is being energised

Dave

[Shroppyfly]

Dave
well prior to me stripping it down , i ran the dryer and you could im pretty sure hear the compressor kicking in, now at that stage whether it was getting warm i dont know, as i ran it without wet/damp clothes in ill have to grrrr lol put the dryer back together and do as you suggest, what your saying is, it should get warm yes? any thoughts on that fan , or is that secondary in terms of a replacement/repair cost and immaterial to the actual dryer working?
Will report back with outcome
Thanks James

[electrofix]

dont worry short term on the fan. my guess is its only switched on when things get hot

if the compressor is running and the evaporator is not getting cool then its a refrigeration fault and beyond economical repair

the evaprorator is behind the cover on the front where the filter is

also dont expect the dryer to get very warm in use its not a conventional dryer and it will only get luke warm as it uses waste heat from the refigeration circuit

Dave

[Shroppyfly]

Dave , no gotcha on that i know its a scrap job if refridgeration stuffed, so as im just vbeginningbto reassemble, , when i had it running before , i removed the filter and it was blowing cool/cold air at me ,with no wet clothes in it , that a good sign?, now wheres my screwdriver ah sunday evening what the feck am i doing…!

[electrofix]

the cold air at that point id the air leaving the tub about to go through the evaporater. its the evaporater that should be getting colder but it can be difficult to feel with the air rushing through it

Dave

[Shroppyfly]

So after removing about 4{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} of the skin off my hands trying to reasemble the ***** im now calling it, with wet clothes the compressor does get , im not saying to hot to touch , nor luke warm , but hot id say, the fan hasnt kicked in sofarm an hour last night and running it again now, as for drying the clothes, yessss but not as perhaps god as id expect a heatpump dryer to do, , , so would u think as the compressors hot, the heatpump part of the dryers working ok , as expected? im reasonably sure the water pumps doing its job but now 100{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} on that
What dyo think
Thanks

[electrofix]

heat pump dryers are a different animal to the normal heated type. think of it more like a dehumidifier in a box. It does not get anywhere near as warm as a conventional dryer so uses way less energy

if the compressor is running it does not mean it will work all it mean is the motor of the compressor is running. internally the compressor mech has to work and the gas has to be present in sufficient quantity to function. if the compressor is starting, and if it gets warm in use thats likley, then is the eveporater does not get colder then water wont condense

Dave

[Shroppyfly]

Thanks, I know i should understand what you wrote, but im struggling a bit to follow it , to a simpleton like myself, the dryer is working , i mean its drying the clothes.. ok so it getting warm means is the MOTORS working but surely the fact its dried the clothes means, there must be enough refrigerant to make that happen yes? only bit that im really struggling to follow is your last cpl lines, , ok so if its drying the eits extracting the moisture and returning it to water yes?
Sorry to sound a thicko

Thanks

[electrofix]

well if its drying the clothes its not broke then

or is it ?

if its doing the job for which it was intended then there is no problem.
where you under the impression it should heat more then it does? as compared to conventional dryers its only really luke warm. Is that the reason you took it apart thinking it was a fault

Dave

[Shroppyfly]

Dave,
Well as I said , it was given to because the owners of it , said it no longer heated up , now as they’ve an identical dryer bought at the same time i was inclined to believe them, as i mentioned just removing one side revealed fluff that COMPLETELY covered the motor and compressor, as well as being Everywhere else inside the dryer, now all i’ve done is checked continuity and cleaned, and apparently its working fine, why now , who knows loose wire, too much fluff, overheating,, NO i was aware that heatpumps don’t chuck out as much heat as conventional dryers, but this one wasn’t throwing out ANY heat.., anyway ill run it for a few days see how we go.

Thanks for the assistance, quick question is this a uk based forum with uk experts on it like yourself?

Thanks again
James

[electrofix]

yes we are all in the uk but some of us are at different ends of the country

Dave

[Shroppyfly]

Dave
Ah good, but there’s a reason your the experts and im not, i did mention that i thought the water pump isn’t pumping, if that makes ANY sense, , took out the filter front bottom left, and bout half a cupfull of water came out , so while i said it does er seem to be drying the clothes, either the pump/pipe/float ain’t workin , Or its not as apparently fixed as I thought it was Grrrrr any thoughts?
James

[electrofix]

you need to remove the pump and float assembly

check its all free and clear

if the pump needs replacing look for part no’s

2962510800

2962510600

Dave

[Shroppyfly]

Thanks Dave should i test both the pump and the lift up sensor thingy for continuity

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