30 something year old Carrier wiring diagrams

[skidplatebob]

I am trying to locate a wiring diagram and parts list for a Carrier 38HQ134300 compressor section and a 38HQ500254 outdoor coil section. I am having trouble with the defrost cycle and really need to make the repairs. I know its old but i really don't have the money for a new one right now. Please help me if you can.

[Brian_UK]

Haven't found your exact model yet but it's close, any good?

http://www.docs.hvacpartners.com/idc/groups/public/documents/techlit/38hq-7w.pdf

edit: If you also look in this sites directory there are a lot of 38HQ files, amongst all the others, don't know what's in them but might be useful..
http://www.docs.hvacpartners.com/idc/groups/public/documents/techlit/

Good luck

[skidplatebob]

Thank you very much! I will look at what you sent me. My main goal is to replace the mechanical defrost circuit with a defrost board, not sure how but i'm sure there are some available.

[Brian_UK]

Is this like yours?, Service Call 6.

http://books.google.co.uk/books?id=eS_2UGJVA2EC&pg=PA1024&lpg=PA1024&dq=aircon+reverse+cycle+defrost+controller&source=bl&ots=bfW4zWHaJa&sig=vZVPiJ_i8R4kTobhlg1ChhecRiA&hl=en&ei=jb40TYeGEMaChQeo-73rCw&sa=X&oi=book_result&ct=result&resnum=6&sqi=2&ved=0CEEQ6AEwBQ#v=onepage&q&f=false

Don't know how much but...?
http://mjbcontrols.com.au/index.php?q=node/7

Interesting idea on a different scheme for a Carrier heat pump...
http://www.gpsinformation.org/joe/HeatPump2.html