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Furnace Comes On When Circuit Breaker Turned On To Central Unit

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Furnace Comes On When Circuit Breaker Turned On To Central Unit nowforsale 09-03-2006
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Posted by nowforsale on September 3, 2006, 9:20 pm
Janitrol Model A36-15
Schemtaic here http://www.ceridium.com/schematic.html

The optional Emergency Heat Relay is installed, and the airhandler is wired
for slow speed.

What causes the electric heating elements in the unit to heat up and the
blower fan to come on when the 2 circuit breakers on the unit are flipped
on, with the thermostat set to Off?



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Posted by Tony Hwang on September 3, 2006, 10:00 pm
nowforsale wrote:
> Janitrol Model A36-15
> Schemtaic here http://www.ceridium.com/schematic.html
>
> The optional Emergency Heat Relay is installed, and the airhandler is wired
> for slow speed.
>
> What causes the electric heating elements in the unit to heat up and the
> blower fan to come on when the 2 circuit breakers on the unit are flipped
> on, with the thermostat set to Off?
>
>
Hi,
And it keeps running like that? Or I wownder if the thing is in test mode?

Posted by lp13-30 on September 3, 2006, 10:13 pm
Either your heat sequencer is stuck or it is getting 24 volts from
somewhere. Check and see if you have 24 volts to the sequencer. If not,
tap on the sequencer with a screwdriver handle and see if it goes off.
Post the results and we can go from there. Good luck Larry


Posted by nowforsale on September 4, 2006, 7:53 am
> Either your heat sequencer is stuck or it is getting 24 volts from
> somewhere. Check and see if you have 24 volts to the sequencer. If not,
> tap on the sequencer with a screwdriver handle and see if it goes off.
> Post the results and we can go from there. Good luck Larry

Am not familiar with what the sequencer is or how to check to see if it is
getting 24 volts. Is the sequencer the thing with M1, M2, M3, M4, M5, and M6
on it?

Tried tapping on the 3 things now colored yellow in the schematic here
http://www.ceridium.com/schematic.html
(the Emergency Heat Relay, the Blower Time Delay Relay, and the other
thing),
to no avail, the furnace and blower sitll come on when the circuit breakers
are flipped on.



Posted by nowforsale on September 11, 2006, 10:17 pm
> Either your heat sequencer is stuck or it is getting 24 volts from
> somewhere. Check and see if you have 24 volts to the sequencer. If not,
> tap on the sequencer with a screwdriver handle and see if it goes off.
> Post the results and we can go from there. Good luck Larry

changed the sequencer with a new one but problem still exists

haven't yet checked to see if the sequencer is getting 24 volts; if it is
getting 24 volts, where would it be coming from?
isn't it supposed to get 24 volts from the 24 volt transformer?



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