Hi,

I have a problem with my Mother In Law's Creda T601CW Tumble dryer
(electric). It blows hot then a few minutes later blows cold five
minutes later back to hot. I've taken the front (exhaust?) thermostat
out this is located inside the door hole. There is continuity across
it. I then taped the two wires together and started the dryer up and
it stays hot all the time. My question is does anyone know if these
front stats reset themselves, if so then this would be the answer to
the problem as by the time I remove the stat it may have reset itself
and so showing continuity on the multimeter.

Also i notice the heater element coils are red hot at the top and hot
but not red on the bottom of the element. Is this normal and is it due
to the top one being sheltered from the main blast from the blower?

I hope this makes sense.

Thanks to any replies

Jon

On Nov 4, 1:51*am, jayseeblue wrote:
Hi,

I have a problem with my Mother In Law's Creda T601CW Tumble dryer
(electric). It blows hot then a few minutes later blows cold five
minutes later back to hot. I've taken the front (exhaust?) thermostat
out this is located inside the door hole. There is continuity across
it. I then taped the two wires together and started the dryer up and
it stays hot all the time. My question is does anyone know if these
front stats reset themselves, if so then this would be the answer to
the problem as by the time I remove the stat it may have reset itself
and so showing continuity on the multimeter.

Also i notice the heater element coils are red hot at the top and hot
but not red on the bottom of the element. Is this normal and is it due
to the top one being sheltered from the main blast from the blower?

I hope this makes sense.

Thanks to any replies

Jon

Yes, if it didnt reset it woudlnt be any use as a thermostat


NT

On Tue, 3 Nov 2009 17:51:53 -0800 (PST), jayseeblue
wrote:

My question is does anyone know if these
front stats reset themselves, if so then this would be the answer to
the problem as by the time I remove the stat it may have reset itself
and so showing continuity on the multimeter.

Also i notice the heater element coils are red hot at the top and hot
but not red on the bottom of the element. Is this normal and is it due
to the top one being sheltered from the main blast from the blower?

The thermostat is doing its job. Almost certainly the inlet or
exhaust is partially blocked with accumulated dust which is reducing
the airflow and allowing the heater to get the air too hot. It is
possible the thermostat is faulty but I'd clean out the inlet air vent
and the full outlet path before doing anything else. If the dryer
vents to outside is there a permanent flap on the outside wall and is
this stuck closed?

Peter Parry wrote:

The thermostat is doing its job. Almost certainly the inlet or
exhaust is partially blocked with accumulated dust which is reducing
the airflow and allowing the heater to get the air too hot. It is
possible the thermostat is faulty but I'd clean out the inlet air vent
and the full outlet path before doing anything else. If the dryer
vents to outside is there a permanent flap on the outside wall and is
this stuck closed?

A very valid point. I was not too happy when my brand new
all-singing all dancing Bosch tumble dryer kept telling me the
outlet was blocked, the old crude one never complained. When I
eventually went outside and checked, it was quite right, the
exterior grille was well clogged with fluff.

You won't want to hear of a friend of mine whose garage was quite
seriously damaged when his tumble dryer caught fire in the night.

Chris
--
Chris J Dixon Nottingham UK


Have dancing shoes, will ceilidh.

On Wed, 04 Nov 2009 10:35:51 +0000, Peter Parry wrote:

On Tue, 3 Nov 2009 17:51:53 -0800 (PST), jayseeblue
wrote:

My question is does anyone know if these
front stats reset themselves, if so then this would be the answer to
the problem as by the time I remove the stat it may have reset itself
and so showing continuity on the multimeter.

Also i notice the heater element coils are red hot at the top and hot
but not red on the bottom of the element. Is this normal and is it due
to the top one being sheltered from the main blast from the blower?

The thermostat is doing its job. Almost certainly the inlet or
exhaust is partially blocked with accumulated dust which is reducing
the airflow and allowing the heater to get the air too hot.

Agreed. I took our old one apart last year and pulled a staggering amount
of crud out of it. I'm tempted to get the tin snips to it actually and
rig it so it'll be a bit easier to dismantle the next time (I had to
flip it over before to get to some screws on the underside).

re. heating element colour, ISTR ours glows red on part of it but not the
rest - I expect the behaviour the OP's seeing there is normal.

If the dryer vents
to outside is there a permanent flap on the outside wall and is this
stuck closed?

I bunged our dryer down in our basement, which means the vent's only a few
inches above ground level outside now. As it's winter and we get a lot of
snow around here, the dryer's got a note taped to it to remind people to
check the vent's clear before use...

cheers

Jules

"NT" wrote in message
...
On Nov 4, 1:51 am, jayseeblue wrote:
Hi,

I have a problem with my Mother In Law's Creda T601CW Tumble dryer
(electric). It blows hot then a few minutes later blows cold five
minutes later back to hot. I've taken the front (exhaust?) thermostat
out this is located inside the door hole. There is continuity across
it. I then taped the two wires together and started the dryer up and
it stays hot all the time. My question is does anyone know if these
front stats reset themselves, if so then this would be the answer to
the problem as by the time I remove the stat it may have reset itself
and so showing continuity on the multimeter.

Also i notice the heater element coils are red hot at the top and hot
but not red on the bottom of the element. Is this normal and is it due
to the top one being sheltered from the main blast from the blower?

I hope this makes sense.

Thanks to any replies

Jon

Yes, if it didnt reset it woudlnt be any use as a thermostat


Some stats do not reset themselves as they are high-limits, which I suspect
this is.

"Jules" wrote in message
news
On Wed, 04 Nov 2009 10:35:51 +0000, Peter Parry wrote:

On Tue, 3 Nov 2009 17:51:53 -0800 (PST), jayseeblue
wrote:

My question is does anyone know if these
front stats reset themselves, if so then this would be the answer to
the problem as by the time I remove the stat it may have reset itself
and so showing continuity on the multimeter.

Also i notice the heater element coils are red hot at the top and hot
but not red on the bottom of the element. Is this normal and is it due
to the top one being sheltered from the main blast from the blower?

The thermostat is doing its job. Almost certainly the inlet or
exhaust is partially blocked with accumulated dust which is reducing
the airflow and allowing the heater to get the air too hot.

Agreed. I took our old one apart last year and pulled a staggering amount
of crud out of it. I'm tempted to get the tin snips to it actually and
rig it so it'll be a bit easier to dismantle the next time (I had to
flip it over before to get to some screws on the underside).

re. heating element colour, ISTR ours glows red on part of it but not the
rest - I expect the behaviour the OP's seeing there is normal.

If the dryer vents
to outside is there a permanent flap on the outside wall and is this
stuck closed?

I bunged our dryer down in our basement, which means the vent's only a few
inches above ground level outside now. As it's winter and we get a lot of
snow around here, the dryer's got a note taped to it to remind people to
check the vent's clear before use...

Buy a consdensing dryer, then no vent.

Doctor Drivel wrote:

"NT" wrote in message
...
On Nov 4, 1:51 am, jayseeblue wrote:
Hi,

I have a problem with my Mother In Law's Creda T601CW Tumble dryer
(electric). It blows hot then a few minutes later blows cold five
minutes later back to hot. I've taken the front (exhaust?) thermostat
out this is located inside the door hole. There is continuity across
it. I then taped the two wires together and started the dryer up and
it stays hot all the time. My question is does anyone know if these
front stats reset themselves, if so then this would be the answer to
the problem as by the time I remove the stat it may have reset itself
and so showing continuity on the multimeter.

Also i notice the heater element coils are red hot at the top and hot
but not red on the bottom of the element. Is this normal and is it due
to the top one being sheltered from the main blast from the blower?

Yes, if it didnt reset it woudlnt be any use as a thermostat

Some stats do not reset themselves as they are high-limits, which I suspect
this is.

If the thermostat is not resetting, how do you explain the OP's
description?

It blows hot then a few minutes later blows cold five minutes later back to hot.

Chris
--
Chris J Dixon Nottingham UK


Have dancing shoes, will ceilidh.

On Thu, 05 Nov 2009 11:10:19 +0000, Doctor Drivel wrote:
I bunged our dryer down in our basement, which means the vent's only a few
inches above ground level outside now. As it's winter and we get a lot of
snow around here, the dryer's got a note taped to it to remind people to
check the vent's clear before use...

Buy a consdensing dryer, then no vent.

Yeah, might be an option once I've dug a sump down in the basement and
hooked a pump up (which I need to do sometime so I can throw the washing
machine down there, too)

In the spirit of DIY, maybe I can turn the existing dryer into a
condensing one... :-)

"Chris J Dixon" wrote in message
...
Doctor Drivel wrote:

"NT" wrote in message
...
On Nov 4, 1:51 am, jayseeblue wrote:
Hi,

I have a problem with my Mother In Law's Creda T601CW Tumble dryer
(electric). It blows hot then a few minutes later blows cold five
minutes later back to hot. I've taken the front (exhaust?) thermostat
out this is located inside the door hole. There is continuity across
it. I then taped the two wires together and started the dryer up and
it stays hot all the time. My question is does anyone know if these
front stats reset themselves, if so then this would be the answer to
the problem as by the time I remove the stat it may have reset itself
and so showing continuity on the multimeter.

Also i notice the heater element coils are red hot at the top and hot
but not red on the bottom of the element. Is this normal and is it due
to the top one being sheltered from the main blast from the blower?

Yes, if it didnt reset it woudlnt be any use as a thermostat

Some stats do not reset themselves as they are high-limits, which I
suspect
this is.

If the thermostat is not resetting, how do you explain the OP's
description?

I responded to this: "if it didnt reset it woudlnt be any use as a
thermostat". Which is incorrect.

"Jules" wrote in message
news
On Thu, 05 Nov 2009 11:10:19 +0000, Doctor Drivel wrote:
I bunged our dryer down in our basement, which means the vent's only a
few
inches above ground level outside now. As it's winter and we get a lot
of
snow around here, the dryer's got a note taped to it to remind people to
check the vent's clear before use...

Buy a consdensing dryer, then no vent.

Yeah, might be an option once I've dug a sump down in the basement and
hooked a pump up (which I need to do sometime so I can throw the washing
machine down there, too)

The water is emptied into a tray. You empty the tray.

On Thu, 05 Nov 2009 16:18:46 +0000, Doctor Drivel wrote:
Buy a consdensing dryer, then no vent.

Yeah, might be an option once I've dug a sump down in the basement and
hooked a pump up (which I need to do sometime so I can throw the washing
machine down there, too)

The water is emptied into a tray. You empty the tray.

Not necessarily:

http://www.creativelaundry.com/produ...ventless.cfm#2

"the difference in temperature causes the moisture in the warm air to
condense into drops of water, which are pumped to the same drain as the
wash water."

and:

http://ths.gardenweb.com/faq/lists/l...958010854.html

"The condensed water can be either pumped away to a drain line (e.g. into
a standpipe shared with the clothes washer) or stored in a container
within the dryer to be emptied later (not all models offer both options)."

and:

http://www.lgwasherdryer.com/pdf/condensing_dryers.pdf

"The condensate is collected in the bottom of the chamber and is pumped
down the same drain as was the wash water"

etc.

"Chris J Dixon" wrote in message
...
Doctor Drivel wrote:

"NT" wrote in message
...
On Nov 4, 1:51 am, jayseeblue wrote:

Yes, if it didnt reset it woudlnt be any use as a thermostat

Some stats do not reset themselves as they are high-limits, which I
suspect
this is.

If the thermostat is not resetting, how do you explain the OP's
description?

It blows hot then a few minutes later blows cold five minutes later back
to hot.


The terms are a bit overloaded which causes confusion.

A thermostat is an operational device which opens and closes as the
temperature changes and is used to maintain a constant (static) temperature,
within a tolerance band.
A high limit switch is a safety device which opens if the temperature ever
reaches an abnormal level. It latches and requires a manual reset.
The problem is that the high limit switch is often incorrectly termed a high
limit "stat".

On most conventional tumble drier designs the thermostat is in the air path,
often at the front. The high limit switch is usually around the back with a
small button accessible from the outside, often coloured red.

I really wouldn't expect to be able to tell that the operational thermostat
was switching on and off by feeling the output air changing temperature as
dramatically as described, it should really have less hysteresis than that
however it does sound like it is working. I'm with the others who've
already commented that most drier problems like this turn out to be lack of
adequate venting. Sort that then see where you go from there.