Original message
| Pandy
 |  "4 flashes "Open Limit switch""
, posted Thu 6 Jan 14:32  
Hi,
I get 4 flashes "Open Limit Switch" [ where is this switch?]
This condition may be caused by: dirty filter[ new one]
improper sized duct system [ nope, it worked just fine before]
incorrect blower speed setting [ where it this?]
incorrect firing rate or faulty blower moter [ this is what happens, furnace starts fine, burnes come on fine, when it is time for the blower to start it doesn't] I can move the duct to look at the fan side of blower, I can't see very much of the other side of blower.
I have books or instructions of all the furnace and one for the new control box [ this is the 3nd one]
it doen't let me see a pic. of the Limit switch.
can anyone help me?
Pandy
|
|
Replies:
|
| Xenos
Webmaster 
| "Re(1):4 flashes" , posted Thu 6 Jan 19:50
I guess it would all depend on the type of heating system, the make and model.
Xenos.
The best way to escape a problem is to solve it.
|
| | Pandy
| "Re(2):4 flashes" , posted Sat 8 Jan 11:41
Hi again,
thanks' for replying!
I have a Luxaire model # PCUHALD12n080A
this is what is happening..
I push all 5 reset buttons then everything goes ok and I give the blower fan a push and it [the furnace] runs fine.
then the blower fan sometimes wines and sometimes it stills runs and sometimes it stops...if it stops i just start all over again the 5 reset buttons giving the fan a push..it runs fine and wants to run..it is the fan that needs a push.
[I have had something wrong with this furnace all most every year.
I have put 2 control panels in.]
what if I give the fan a spray with wd40[ if i can reach it.]?
I have it in the basement [dirt] it sets on cement and 4 1/2 inch plywood in each corner
I feel they should have hung it from the rafters.I feel that if they had, i would not have had all the problems.
I have small heaters so I'm not to cold.
Thank you,
Pandy
Pandy
|
| | zekeman
| "Re(3):Please help....freezing!!" , posted Thu 6 Jan 21:09
May be too big a delay time for blower power and in the interim the it limits on the high temperature that has built up in the supply plenum.
|
| | Pandy
| "Re(4):Please help....freezing!!" , posted Sat 8 Jan 11:42
i think this was ment for an other post?
Pandy
|
| | Freezone12
| "Re(5):Please help....freezing!!" , posted Thu 13 Jan 17:36
If you have to 'push' the fan to make it go, sounds like you have blower motor problems............
_______________________________________
If it don't fit force it.
If it breaks it needed to be replaced anyways.
|
| | Pandy
| "Re(6):Please help....freezing!!" , posted Thu 13 Jan 20:18
Yep I needed a new moter! I after 345. I got one.
But, I have this site to thank, for I knew what was wrong and It made it easy for them to fix it. I could not fix it myself.
so...THANK YOU !
I like to fix things myself so...I'll be back! :)
@--}--}--
Pandy
|
|
|
