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Fan Doesn't Work When Set to Auto

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Fan Doesn't Work When Set to Auto kicked bucket 10-23-2006
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Posted by Bubba on October 24, 2006, 8:09 pm
It is what a lot of customers tell me to "just throw some in". It
comes in 3.5 oz bottles. I usually stand back about 20 feet from the
outdoor unit and start tossing from there.
Bubba

wrote:

>Sorry for my ignorance, but what is freezone?
>
>Thanks
>
>62BT409 wrote:
>> and it needs freezone
>>
>>
>> >
>> >> For one unit of my heating system, the fan doesn't come on when set to
>> >> AUTO. It works fine when set to ON. (At first the boiler was also not
>> >> coming on but this
>> >> was solved by replacing a relay.)
>> >>
>> >> For my other two units, I had the same problem but worked around it by
>> >> setting a switch on the existing thermostats to ELEC instead of GAS,
>> >> even though my boiler is run with gas.
>> >>
>> >> Does anyone know what the problem might be?
>> >>
>> >> Thanks
>> >>
>> >
>> > Yup. Replace the thermostat, and the subbase.
>> >

Posted by daytona on October 24, 2006, 11:29 pm
as long as you have been doing the work, you must be damn good a hitting the
little hole :o)


> It is what a lot of customers tell me to "just throw some in". It
> comes in 3.5 oz bottles. I usually stand back about 20 feet from the
> outdoor unit and start tossing from there.
> Bubba
>
> wrote:
>
>>Sorry for my ignorance, but what is freezone?
>>
>>Thanks
>>
>>62BT409 wrote:
>>> and it needs freezone
>>>
>>>
>>> >
>>> >> For one unit of my heating system, the fan doesn't come on when set
>>> >> to
>>> >> AUTO. It works fine when set to ON. (At first the boiler was also
>>> >> not
>>> >> coming on but this
>>> >> was solved by replacing a relay.)
>>> >>
>>> >> For my other two units, I had the same problem but worked around it
>>> >> by
>>> >> setting a switch on the existing thermostats to ELEC instead of GAS,
>>> >> even though my boiler is run with gas.
>>> >>
>>> >> Does anyone know what the problem might be?
>>> >>
>>> >> Thanks
>>> >>
>>> >
>>> > Yup. Replace the thermostat, and the subbase.
>>> >



Posted by Stormin Mormon on October 24, 2006, 7:58 am
With the switch in auto, the fan comes on when the furnace is hot
enough to be blowing hot air. Not all the time.

--

Christopher A. Young
You can't shout down a troll.
You have to starve them.
.

For one unit of my heating system, the fan doesn't come on when set to
AUTO. It works fine when set to ON. Replacing the thermostat didn't
solve the problem. (At first the boiler was also not coming on but
this
was solved by replacing a relay.)

For my other two units, I had the same problem but worked around it by
setting a switch on the existing thermostats to ELEC instead of GAS,
even though my boiler is run with gas.

Does anyone know what the problem might be?

Thanks



Posted by Noon-Air on October 24, 2006, 8:58 am

> For one unit of my heating system, the fan doesn't come on when set to
> AUTO. It works fine when set to ON. Replacing the thermostat didn't
> solve the problem. (At first the boiler was also not coming on but this
> was solved by replacing a relay.)
>
> For my other two units, I had the same problem but worked around it by
> setting a switch on the existing thermostats to ELEC instead of GAS,
> even though my boiler is run with gas.
>
> Does anyone know what the problem might be?
>
> Thanks
>
Does the thermostat energize the blower relay?? or does the the furnace
control board energize the blower relay?? Without the most simple, basic,
information, there is no way to tell. Can you tell whats missing??

Try.......

Furnace;
Make
Model number
Serial number

Thermostat;
Make
Model number

Without this information, your wasting our time.




Posted by She-Hate-Me on October 24, 2006, 11:23 am

> For one unit of my heating system, the fan doesn't come on when set to
> AUTO. It works fine when set to ON. Replacing the thermostat didn't
> solve the problem. (At first the boiler was also not coming on but this
> was solved by replacing a relay.)

So the boiler fan isn't coming on eh?

You are too stupid to even phrase the problem
properly....Never mind find the answer.

PS- Don't bother to thank me, I do this as a public service.



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