If this just a electric furnace then one of the many relays, sometimes called
sequencer in a electric furnace has the magnetic coil or a contact not making.
There should be some where on the inner door of the unit a schematic or wiring
diagram. There are a number of these as there a number of elements. There is
likely circuit breakers in the furnace also. Abad element would likely trip
only one of these. The sequencing relays bring the elements on in order rather
than all at once which would cause massive current surges. Doing it in stages
brings them on in steps that minimizes surges. So a failure in the early
stages stops the entire process.
Now if you have a heat pump with electric furnace backup it becomes more
involved with a two stage thermostat. The heat pump should come on with a
minor temperature drop. When it drops more the electric furnace should come
on. A thermostat failure could cause a problem. All depends on many things.
Really to follow a diagram for the untrained to get anywhere.
Ron
----- Original Message -----
From: Kevin Doucet
To: [email protected]
Sent: Friday, December 25, 2009 9:40 AM
Subject: [BlindHandyMan] help friend's electrick heat out
Hi,
A friend's electrick fernice has stopped working. The unit clicks and
starts blowing air when the target temp is raised above the current
indoor temp, but, it never gets hot or changes the indoor temp.
We have reset all breakers but to no joy.
Any ideas as what to try.
Thanks for any help!
[Non-text portions of this message have been removed]
