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Old 12-31-2012, 04:55 PM   #31
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Sears Heater system doesn't stop


They aren't suppose to be glowing when the blower is running. If they do, then the air flow is way too low.

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Old 12-31-2012, 04:56 PM   #32
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Sears Heater system doesn't stop


tie a rope to it..... it's barely a poor anchor...... replace the piece of poop.....
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Old 12-31-2012, 04:57 PM   #33
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Sears Heater system doesn't stop


for 19 bucks, he could have had an answer by now.
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Old 12-31-2012, 05:24 PM   #34
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Sears Heater system doesn't stop


Quote:
Originally Posted by digitalplumber View Post
for 19 bucks, he could have had an answer by now.
really..... how's that work
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Old 12-31-2012, 05:57 PM   #35
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Sears Heater system doesn't stop


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really..... how's that work

The OP posted that no one was available until next week and they would charge him 100 bucks to tell him to trash it.

My post on the firont page has a link to a San Antonio HVAC offering 19.oo service call, 24/7.

I find it hard to believe that every single HVAC company is not available until next week.

I agree with you, one look at that unit and wouldnt ever want it on again.
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Old 12-31-2012, 06:01 PM   #36
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Sears Heater system doesn't stop


oh I see....... I agree..... its not worth fixing...... put it to rest all ready.....
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Old 12-31-2012, 08:01 PM   #37
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Sears Heater system doesn't stop


There are only 3 heating repair listings in Uvalde and they are booked and I'm sure would press for a total replacement. San Antonio is 81 miles away and it's $100 for a visit that I suspect would lead to nothing.. maybe some parts ordered. I've even arranged a jan 7th appointment for $90...just to inspect it. I admit it is total neglect that puts me in this situation. just a basic inspection during the summer would've solved this but I arrived in October and the situation in the house is desperate. before you become 82 years old and senile I recommend building a support system other than fly by night tenants. this is a nationwide problem as older people live alone longer. just imagine if you ignored every home maintenance project for five or ten years. the list of problems in this house could fill the whole diy chat forum for years. The owner can't pay his phone bill or insurance let alone replace the heating system. and if you saw the rest of the house you'd realize the electric furnace was the one thing that was working. no ethical heating company would put a new furnace in this house. they would require hazard pay to go into the attic to replace the ducts and that would require work to the rafters and the roof etc. etc.... It would be like putting a new Cadillac motor in a broken box car. Only I know the whole situation here and I'm certain the only solution is to fix the furnace with parts I will buy. It's getting power, the ducts do blow hot air so I have to ignore the rest. I know I can do it but I'm more of a motorcycle mechanic and automation field service tech so I need help. Right now I'm at $180 in parts and I've decided to let the motor fall apart before replacing it. I'm not joking when I say the house will be demolished and if I don't fix this furnace then the space heaters will probably burn it down. I seriously doubt the owner will be living here more than one more winter.

now, beenthere's comment makes me think the solution is the 4 new restring elements that I ordered today because if the elements aren't supposed to stay red when the fan is on then it's working. (I guess I was thinking of it like a big space heater and space heaters always glow) but there are only two so it can only do so much. in fact, when I rigged the other two broken elements to work along with the two good ones I had four working elements and that was the only time there was noticeable heat. then the two elements burned out again. so far today the thermostat is kicking on every hour or two because it's already warm outside and the fan turns off when the sequencer kicks off. the limiters are all bypassed right now and that kind of makes me nervous.



If it can keep us warm at night then It's a major improvement.

I'll have to bring the relay and the limiter (I think it's called a plenum mount limiter) to get replacements.

You know, it occurs to me the way to test what is really happening when the motor turns on is to remove the belt. then the motor will come on without turning the blower fan and if the elements still stop glowing then I'll know something is cutting power to the sequencer. if they stay glowing then I'll know the fan is what is cooling them down and I can leave it alone.

I'll check back in when the restring elements arrive and I install them. or when something else breaks
happy new year
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Old 12-31-2012, 08:07 PM   #38
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Sears Heater system doesn't stop


I'd wire the limiters back in. If the blower motor failed, it could start a fire without them to protect it.
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Old 12-31-2012, 08:37 PM   #39
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Sears Heater system doesn't stop


looking at it again, the top disk limit sensor and plenum sensor are still in the transformer loop which powers the thermostat which controls the sequencer so if they are working then at 200 degrees the heat shuts down. This is a temporary fix until I can get to a parts supplier to replace the relay and the sensors.
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Old 12-31-2012, 09:24 PM   #40
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Sears Heater system doesn't stop


Why not invest in safe radiator type heaters? Instead? That unit is an accident waiting to happen!
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Old 01-11-2013, 01:43 PM   #41
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Sears Heater system doesn't stop


it took some work and a lot of advice from Beenthere but the heater is basically working. I've ordered a plenum mount limit switch to see if that was causing the fan relay to quit working. I've looked at replacement fan relays but this one is discontinued and the ones that are similar look like they have totally different poles jumped. I didn't trust myself to re-engineer the relay so I'll find a used replacement.
right now the fan kicks in when the sequencer circuit closes and that way it's always running when the coils are hot.
Incidentally, I did order four of those $7 restring kits and they basically worked. The ceramic pieces didn't fit the metal face (the new ones were square and the old ones were round) so I used the old ones. They needed to be stretched and I recommend stretching a little at a time as it's easier to go longer than shorter.

now the owner needs to be reprogrammed as he turned the fan breaker off without turning the heat off and burned out three of the four new coil elements within 24 hours on installing them. So I've resorted to locking the door to the air handler until I can train him to only use the thermostat. thanks to beenthere for his advice


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