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Posted by Andrew on July 13, 2007, 7:28 pm
On Jul 13, 7:24 pm, .p.jm@see_my_sig_for_address.com wrote:
> >> It sound like your circulation fan kicking out on thermal overload
> >> cause? few different things, one perhaps all it needs some lubrication
> >> or running cap shorted or your voltage to low or it simply wants
> >> take vacation be prepare to purchase new one.
> >> Tony
>
>
>
> >> > Recently my HVAC in my condo stopped working. The fan will not come
> >> > on. Even when I click the tstat to have the fan "on" instead of
> >> > "auto".
>
> >> > There is a switch for the blower/fan that is next to the intake vent
> >> > (and where the fan actually is) that I turn off to service the filter,
> >> > and if I turn this switch to off, then to on, the fan will whirr up
> >> > and stay on for about 10 seconds. During this time, the air does feel
> >> > cool (to me) but after about 10 seconds, the blower turns off again
> >> > for no apparent reason.
>
> >> > I have checked the breaker and it is OK.
>
> >> > The blower is made by first co. and the model is 30RAQT-3.
>
> >> > Any thoughts?
>
> >I was able to check the relay inside the outside unit (which has the
> >fan and compressor). I found the following.
>
> >-The side coming from the switch out there has 110V.
> >-The other side does not.
> >-If I leave all power down and push down on the contactor, it fires up
> >the compressor and as long as I hold it, it runs and seems to run ok
> >(only tried this once because I didn't want to start/stop the
> >compressor over and over).
>
> >I'm trying to measure the voltage that turns on the relay but I
> >haven't seen any voltage there so I'm not 100% sure it's the relay.
> >I'm not sure how the tstat works?
>
> >Of the 4 wires I have, W,Y,G, and RC, as the system sits right now,
> >there is no voltage on any of them. If I flip off the indoor blower
> >switch, then turn it back on, I get voltage between the W and G
> >lines. I haven't been able to check if there is voltage outside at
> >the relay during this because I don't have another person here right
> >now to help me check. It appears as if the RC and W lines are the
> >ones that connect to the relay, though. I haven't been able to read
> >any voltage on these lines yet.
>
> >I'm wondering two things:
>
> >1. Does blower/fan "check" to see if the outside unit is working and
> >shut down after 10 seconds or so if it is not?
> >2. How does the whole system work, ie, how does the tstat control
> >it? It looks like it is just a bunch of relays and does not provide
> >any actual power? What provides the power? The blower/fan circuit
> >that provides the voltage on the W and G lines when it turns on? Is
> >the RC supposed to have voltage between it and another line? Does
> >this sound like a relay problem? I'm in the process of finding places
> >locally to replace the relay as I it looks like it will be cheap to
> >try it anyway.
>
> >Any thoughts?
>
> You are well on your way to spending more on wrong parts than
> you would paying to get it fixed right.
>
> Carry on.
>
> --
> Click here every day to feed an animal that needs you today
!!!http://www.theanimalrescuesite.com/
>
> Paul ( pjm @ pobox . com ) - remove spaces to email me
> 'Some days, it's just not worth chewing through the restraints.'
> 'With sufficient thrust, pigs fly just fine.'
> HVAC/R program for Palm PDA's
> Free demo now available onlinehttp://pmilligan.net/palm/
Do you have any helpful information for me? If not, can you please
not respond to any more of my posts?
Thank you.
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