Heat Pumps and Electric Heating - demand defrost termnation temperature

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snark
01-28-09, 06:55 PM
Hey Jarredsdad.... what termnation temperature do you set on your demand defrost boards here in central virginia. Mine clears off in 3 to 5 minutes but stays in defrost over 10minutes each time. Don't know what it is set on now! Thanks!


Jarredsdad
01-28-09, 08:14 PM
You don't have much of a choice if you use OEM parts.

Demand is defrost at coil temp. Comes out of defrost on temp or time if temp is not reached.

Can't post docs to jarredsdad PWP right now. Have movie taking up space for family, no room.

What's your make model etc?

On the board do you have 30, 60, 90? That would be time/temp defrost. ???????

snark
01-29-09, 06:45 AM
It is a Westinghouse ft4be that came with a time temp board. Nordyne started putting demand boards on this model so my installer changed mine to the demand board. Apparently it has temperature setting that you can set, I think it came at 70 and he changed it to 80 degrees. I think it is not reaching 80 degrees and is timing out each time it goes into defrost. I was wondering what temp setting would be best here in our area.
Thanks for your advise!


Jarredsdad
01-29-09, 06:41 PM
Your original board terminated defrost at 68 degrees. I would set what you have to 70 if not 60.

Check page 11 if this pdf comes up.

http://www.nordyne.com/literature/708695a.pdf

80 degrees is way to high and much to long for strip heat to be sucking up elec and increasing cost.

Don't call that tech again.

snark
01-29-09, 07:15 PM
Thanks Jarredsdad for the pdf and the advise, gonna get it lowered to 70 at least. How could I contact you if I need some work on mine down the road? Again thanks for taking your time to help save me some money!!

Jarredsdad
01-29-09, 07:25 PM
Best thing about moving from VaBch to Central Va is word of mouth doesn't travel that far.

If you lived next door, sure I would help.

Here, all help is best kept public. You are one person who may have just helped 100 people with the same problem. Except they only had to read your plight to fix their own.