Mikepier wrote:
On Jun 17, 10:51 pm, "Zyp" wrote:
JackpipE wrote:
While replacing thermostat I have shorted out control transformer on
my AC system. I have split system and I already replaced the 24V
transformer for the fan (the unit an the attic) and got it to work.
However, the condensing unit is still not working. Here is a picture
of the electric parts on the unit:
http://e-pixel.net/AC_condensing_unit.jpgI have power 220V coming
into the unit and I have 24V now coming to
the unit from the attic fan. I was trying to follow the 24V on the
condensing unit but it goes inside the coil to the bottom (labeled
on the picture) and I can't find 24V anywhere on the unit. I checked
every other wire with the brown 24V wire and I don't have 24V
anywhere.
Can someone help me out here. What's inside the unit where the blue
24V goes to? What else could be damaged here?

Thanks in advanced for all your help,
Jack

You have a CARRIER 38ED high eff. from the 80's. The electronic
board is a "anti short - cycle" timer. Remove it from the circuit.
Your unit will light if you have 24 v from the two wires coming in.
You'll have to 'by-pass' the c.b. Good luck.

--
Zyp- Hide quoted text -

- Show quoted text -

My thermostat has a built in "anti cycle" feature, in that it will not
allow less than 5 minutes between compressor cycles. I don't know if
that board does the same thing, but just figured I let you know in
case the board is bad, you can use the T-stat as a substitute.


SOLID-STATE TIME GUARD II CIRCUIT,

protects unit compressor by preventing short

cycling. Time Guard II circuit provides a 5 ± 2minute

delay before restarting compressor after

shutdown for any reason. On normal start-up, the 5minute

delay occurs before thermostat closes. After

thermostat closes, the Time Guard II circuit then

provides a 3-second delay to prevent contactor

chattering.


--
Moe Jones
http://www.MoeJones.info