I measured the voltage on the blower relay then.

with Cool set to On, Fan set to On, and t-stat at 65, I still have no voltage on contact 1 & 3 which are the wires running to the blower motor.

So is the blower relay my problem then, or is something else more likely?

Jeff

Here is the info on the transformer

184-2011-406-H
12FLA 60LRA 125VAC
8FLA 48LRA 250VAC
18A 277VAC
Coil 24V 50/60Hz
6205370

Has 6 contacts
1 and 3 are on the load(motor side)

2- Black
5- Red
4 - wire labeled Y
6 - wire labeled W

Finally got back to fixing this. Problem is that the transformer in the control box has 6 tabs while the one you recommended has 4. I know 2 are line, 2 are load, and I'm assuming that the other 2 are a ?relay? that gets tripped by the t-stat. So what part am I looking for in that case? thanks again...

Will give it a try. Thanks for saving me the house call fee from the local HVAC place.

Jeff

Primary side of the transofmer has 120vac

0vac on the secondary side.

Does that mean the transformers gone?

Jeff

Cool-Auto-65 does not start the outside A/C unit.

Not switches on the metal box, just a jumble of wires going in two different holes. Is that the t-stat control unit?

Jeff

Furnace : Coleman 7956-856 Blower above it : Intertherm 900759 (labeled Heating Cooling Blower) External A/C heat exchanger : Intertherm Model # CNS50BCRAA 85MR04 Basically I see that the blower is comprised of a motor/fan, a large capacitor (for motor start I guess) and something in a rectangular b...

Intertherm 900759 blower unit attached on top of a coleman 7956-856 furnace. Came home yesterday to no A/C, no blower. Set thermostat to Off and fan to ON on the t-stat. Blower won't come on. Previously unit worked fine, no problems with the t-stat. Have had the blower motor replaced about 2 years a...

Trying to find a manual/parts for my A/C unit. Its a split furnace/A/C setup, the furnace is a coleman, and I've found a manual for that. The A/C is Intertherm, and stamped with "cns30bcraa". That number apparently doesn't mean much. Can anyone tell me where I might find the actual model n...