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Subject Author Date
Lennox Pulse 21 Fan Control John 12-16-2006
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Posted by daytona° on December 16, 2006, 10:27 pm
Stick a CO tester in the exhaust and get a reading.......let me know what it
is..and thing over 150 ppm is a bad heat exchanger


>> Do a little more reasearch and you'll find there were problems with the
>> Pulse heat exchanger.
>
> Yeah, I know all about this. I've already performed a pressure check
> on the exchanger.
>
> I'm pretty sure my problem is the fan timer control. I was a bit
> confused at first... it now seems that the fan relay is only use for
> AC, not heat. The fan timer controller has an internal relay for heat.
> Can anyone confirm that this is how the newer Pulse 21 is configured?
> If this is the case I'll order a new fan timer.
>
> I was able to duplicate the problem once... the fan timer clicked
> rapidly before the fan shut down. Unfortunately I didn't have my DMM
> connected at the time so I couldn't verify the theory about bad timer
> control...
>



Posted by Bob_Loblaw on December 17, 2006, 2:17 pm

> Stick a CO tester in the exhaust and get a reading.......let me know
> what it is..and thing over 150 ppm is a bad heat exchanger


Nope. Not even close.
If you want to know the proper way to test a Pulse exchanger, email me.



Respectfully, Bob

Posted by Bubba on December 17, 2006, 4:42 pm
On Sun, 17 Dec 2006 19:17:26 GMT, "Bob_Loblaw"

>
>> Stick a CO tester in the exhaust and get a reading.......let me know
>> what it is..and thing over 150 ppm is a bad heat exchanger
>
>
>Nope. Not even close.
>If you want to know the proper way to test a Pulse exchanger, email me.
>
>
>
>Respectfully, Bob

Purchase the "plug kit" from Lennox and you fill it with water.
Totally stupid design and fix just like everything they do.
Im sure you've all seen their heat exchanger with the nut, bolt and
washer through the eyelet at the top to keep it from separating?
Now they've gone to a tubular heat exchanger just like everyone else.
The "Pulse".................what a joke.
Bubba

Posted by Bob_Loblaw on December 17, 2006, 7:46 pm




> The "Pulse".................what a joke.

I'm not a big fan of Lennox, but really, if you think about it, the Pulse
was quite something in it's day.
No ventor motor, 97% efficient, self sustaining ignition....
Once the other models caught up to it in efficiency, or close to it, there
was no need for it anymore.



--
Respectfully, Bob

Posted by on December 17, 2006, 10:02 pm
"Bob_Loblaw" wrote:


>
>I'm not a big fan of Lennox, but really, if you think about it, the Pulse
>was quite something in it's day.
>No ventor motor, 97% efficient, self sustaining ignition....
>Once the other models caught up to it in efficiency, or close to it, there
>was no need for it anymore.


by golly Bob finally posts something I totally agree with.

it must be the season. :)

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