Fan Doesn't Work When Set to Auto

Posted by kicked bucket on October 23, 2006, 9:20 pm

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 Mo Hoaner on October 23, 2006, 9:42 pm

> 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 62BT409 on October 23, 2006, 10:22 pm

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 kicked bucket on October 23, 2006, 10:57 pm

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 Mo Hoaner on October 23, 2006, 11:10 pm

> 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.

It's an integral part of the heating systems that NYC slumlords operate.

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