unit was running fine went off and never came back on have 2 units alike so swapped thermostat ,no help,changed out btdr fan delay for air handler unit outside will run great when operate relay manually pushing it in on relay ,thats relay 24 volts should operate but done operate from thermostat ,any ideas what to check or what might be problem XXXXX XXXXX email add XXX@XXXXXX.XXX
Brand: model a24-10
Type of HVAC: Air Conditioner
Hello there! I'm Norman but you can call me Norm. Let's see what I can do to get you some answers today. I'm ready to get started whenever you are.
Let me clarify your post. You are saying you replaced the Blower relay already and swapped in a different thermostat. You are also saying you can press the contactor in manually and the condenser will start up as normal.
yes outside compressor and fan run its in side wont come on after time or dont cut comp and outside fan on when therm calls for it
Does the blower indoors run at all?
no unable to get it to run but its free when spin by hand
Is the indoor section a furnace or an air handler?
using it only as air con didnt have heat stripps put in
So the outdoor is only a straight A/C unit not a heat pump?
Have you checked your low voltage wire connections at the air handler?
yes they all seem ok
And is the thermostat battery powered?
yes and chged bat plus took other therm from other unit and swapped them
And I'm assuming you checked all the circuit breakers in the panel.
ytes no thromn brakers
Ok, do you own a multimeter and do you know how to use it?
yes iam tech retired from bellsouth work all my life in electronics
OK good. Did you say you tried switching the thermostat Fan switch to the ON position?
yes you can switch it to on but fan dont run on inside unit
Ok. Have you tested the transformer in the airhandler?
no i dont rely know where to ck on it and not sure what voltage to get frm it
Ok, you have a 208/230v primary transformer stepping down to 24v secondary.
It may look something like this and will be mounted to the vestibule panel straight ahead in the air handler.
Hold one sec and I'll show you where.
PART # XXX
Also does this model have a circuit board in there as well?
there is no ckt bds in this unit
I didnt think so. The schematic I had shows something that looks like one. Please go ahead and test the transformer. Please be careful of course. Do you know how to test the transformer?
give me min and i can ck volt out trans if its ok with u
Yep, sounds good. I'll be standing by
thers no volts out of trans former have 208 volt sin which cks on bottom wires on trans and the 2 wires in top have nothing on then and would assume its gone and need to know where i get on from
Yep, it's gone
That's your problem right there. Give me a minute to locate the replacement.
Ok Part # XX XXXXXXXX and I'll find the replacement now.
Here is one http://www.northamericahvac.com/servlet/Categories
and a cheaper http://www.pexsupply.com/Goodman-Amana-B1141643-45VA-Transformer
There ya go. Does that answer all of your questions for tonight?
And incase you want this....
yes believe this may be problem
An entire list of parts and #'s
There's not doubt it's your problem. No transformer... no 24v signal to anything.
Are we all good?
yes i believe that we are ok
Here is your install manual as well in case you wanted it - http://securenet.goodmanmfg.com/pdf/infoPdf/Lit/IO-102F.pdf
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Have a great night Mr. Tom
Thank you so much! Take care.
NC/VA Master HVAC & Gas, Air Balance, LG Master Commissioner