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Posted by Edward R Morris on January 31, 2008, 3:31 pm
Hello,
I have a Carrier 58SXA that I don't know what to do with next. When the
thermostat calls for heat, most of the time the furnace works. Sometimes
though it just does nothing; no inducer motor, no noise, nothing. It shows
heat on the thermostat but the temperature in the house keeps falling and
the furnace is silent. I replaced the control board. Same thing. I replaced
the inducer board and pressure switch. Same thing. I replaced the ignition
box. Same thing. I replaced the pilot assembly and flame sensor. Same thing.
I replaced the limit switch. Same thing. I replaced the thermostat. Same
thing. I'm stumped. I've checked the wiring down from the thermostat.
Everything is as it should be. Our local Carrier man doesn't know what is
wrong. I haven't replaced the gas valve or wiring assembly. When the furnace
works, it works great.
Thanks always
Eddie
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Posted by jamesgangnc on January 31, 2008, 3:38 pm
> Hello,
> I have a Carrier 58SXA that I don't know what to do with next. When the
> thermostat calls for heat, most of the time the furnace works. Sometimes
> though it just does nothing; no inducer motor, no noise, nothing. It shows=
> heat on the thermostat but the temperature in the house keeps falling and
> the furnace is silent. I replaced the control board. Same thing. I replace=
d
> the inducer board and pressure switch. Same thing. I replaced the ignition=
> box. Same thing. I replaced the pilot assembly and flame sensor. Same thin=
g.
> I replaced the limit switch. Same thing. I replaced the thermostat. Same
> thing. I'm stumped. I've checked the wiring down from the thermostat.
> Everything is as it should be. Our local Carrier man doesn't know what is
> wrong. I haven't replaced the gas valve or wiring assembly. When the furna=
ce
> works, it works great.
> Thanks always
> Eddie
You need to break out the meter and do some actual testing when it
won't start. You're just throwing parts at it.
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Posted by Bubba on January 31, 2008, 3:38 pm
On Thu, 31 Jan 2008 14:31:43 -0600, "Edward R Morris"
>Hello,
>I have a Carrier 58SXA that I don't know what to do with next. When the
>thermostat calls for heat, most of the time the furnace works. Sometimes
>though it just does nothing; no inducer motor, no noise, nothing. It shows
>heat on the thermostat but the temperature in the house keeps falling and
>the furnace is silent. I replaced the control board. Same thing. I replaced
>the inducer board and pressure switch. Same thing. I replaced the ignition
>box. Same thing. I replaced the pilot assembly and flame sensor. Same thing.
>I replaced the limit switch. Same thing. I replaced the thermostat. Same
>thing. I'm stumped. I've checked the wiring down from the thermostat.
>Everything is as it should be. Our local Carrier man doesn't know what is
>wrong. I haven't replaced the gas valve or wiring assembly. When the furnace
>works, it works great.
>Thanks always
>Eddie
You need to replace the wiring assembly FIRST!
Second, replact the thermostat again.
Then finally, replace the gas valve.......IN THAT ORDER!
That should take care of it for a while.
Bubba
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Posted by Bobb on January 31, 2008, 5:01 pm
That furnace was made in about 1986, and according to my local Carrier
wholesaler tech guy, "that furnace had problems". LOL The board was
originally designed to shut the inducer off when the call for heat ended.
Also, the combustion air intake would allow water to drip down onto the
pilot assembly. The replacement board would makes the inducer run for 15
seconds after the call for heat ends. How many terminals does your
replacement board have?
> Hello,
> I have a Carrier 58SXA that I don't know what to do with next. When the
> thermostat calls for heat, most of the time the furnace works. Sometimes
> though it just does nothing; no inducer motor, no noise, nothing. It shows
> heat on the thermostat but the temperature in the house keeps falling and
> the furnace is silent. I replaced the control board. Same thing. I
> replaced
> the inducer board and pressure switch. Same thing. I replaced the ignition
> box. Same thing. I replaced the pilot assembly and flame sensor. Same
> thing.
> I replaced the limit switch. Same thing. I replaced the thermostat. Same
> thing. I'm stumped. I've checked the wiring down from the thermostat.
> Everything is as it should be. Our local Carrier man doesn't know what is
> wrong. I haven't replaced the gas valve or wiring assembly. When the
> furnace
> works, it works great.
> Thanks always
> Eddie
>
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Posted by Edward R Morris on January 31, 2008, 5:57 pm
Hi Bobb,
The replacement board has terminals for Y, W, H, R, GH, C, G, EAC-1 and
EAC-2. I've noticed the inducer motor runs for awhile after the call for
heat has ended. I've read some of the problems this furnace has.
Fortunately there is no sign of water dripping on the pilot assembly. I'm
beginning to know this furnace more intimately than I want too..LOL. I
would buy a new furnace but money is the problem.
Bobb, what do you think could be a (the) problem with my wonderful Carrier
58SX?
Thanks,
Eddie
That furnace was made in about 1986, and according to my local Carrier
wholesaler tech guy, "that furnace had problems". LOL The board was
originally designed to shut the inducer off when the call for heat ended.
Also, the combustion air intake would allow water to drip down onto the
pilot assembly. The replacement board would makes the inducer run for 15
seconds after the call for heat ends. How many terminals does your
replacement board have?
> Hello,
> I have a Carrier 58SXA that I don't know what to do with next. When the
> thermostat calls for heat, most of the time the furnace works. Sometimes
> though it just does nothing; no inducer motor, no noise, nothing. It shows
> heat on the thermostat but the temperature in the house keeps falling and
> the furnace is silent. I replaced the control board. Same thing. I
> replaced
> the inducer board and pressure switch. Same thing. I replaced the ignition
> box. Same thing. I replaced the pilot assembly and flame sensor. Same
> thing.
> I replaced the limit switch. Same thing. I replaced the thermostat. Same
> thing. I'm stumped. I've checked the wiring down from the thermostat.
> Everything is as it should be. Our local Carrier man doesn't know what is
> wrong. I haven't replaced the gas valve or wiring assembly. When the
> furnace
> works, it works great.
> Thanks always
> Eddie
>
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