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Is it feasable to retrofit demand defrost on a timed defrost heat pump system?
i live in a cold dry climate and have been watching my heat pump. it is set to defrost every 90 min but it really doesnt need to. the coils are clean and dry. my dealer tells...
Started by vhehn on
, 7 posts
by 5 people.
Answer Snippets (Read the full thread at hvac-talk):
Many modern defrost boards have ....
I'm assuming the system is out of warranty.
Here if you do a field retrofit.
The defrost board is a PCBDM130 DEFROST CONTROL BOARD.
The system works fine.
Goodman system.
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How to force defrost? Carrier rtu. Pic of board
1 Attachment(s) I was wondering if I was missing something or is this board shot. In this pic on the bottom left there are two pins covered by a rubber cover. Dont I just jump these out to force defrost...
Started by billymons on
, 8 posts
by 5 people.
Answer Snippets (Read the full thread at hvac-talk):
It wasn....
Replace the sensor and defrost board.
If nothing happens.
And the test pins are shunted, the board should "speed up" the timer and initiate a defrost cycle into the board.
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I have a York heat pump system and I believe my demand defrost is not working properly. When the defrost cycle is working, the air out of the registers in my house drops to around 50F. The defrost cycle runs about 7 minutes and never seems to quite remove...
Started by HokieJosh on
, 13 posts
by 6 people.
Answer Snippets (Read the full thread at hvac-talk):
The guy who swapped the demand defrost board said he had never seen jumper on the outdoor....
Forcing defrost installed it is now out of business.
It may be the jumper setting on the defrost board.
Placement of sensors.
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Hello HVAC Pros,
I have been in a 3000 ft2 cape cod in western NY built in 1988 for the last 4 years. 2x6 exterior framing and thermopane casement windows. No natural gas available here, we are on a municipal electric system that buys hydro power from...
Started by Greg D. on
, 12 posts
by 8 people.
Answer Snippets (Read the full thread at hvac-talk):
My electric rates....
Many times you are only getting part of the heat elements working and when having to "outrun" the defrost during defrost.
This is not a DiY board so most will simply recommend you get a pro to check out.
The system.
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This morning I was experiencing severe signal loss across the fm band while using my rear defroster in a 2010 3.6r. Has anyone else noticed this issue? Is it due to the antenna in glass design?
Sent from my Nexus One
Answer Snippets (Read the full thread at legacygt):
I have this problem too and I took it....
The dealer can usually repair it with a special "paint" for the defroster grid (you can also probably get it at autozone).
I think this happens usually when one of the defroster lines has been broken.
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So my rear defroster died. I replaced the relay checked the power at the switch. I have power all the way up to the drivers side of the window but Window wont get hot. I believe all the little wires are broken. Where can I get a replacement kit for this...
Started by zombiebug on
, 20 posts
by 8 people.
Answer Snippets (Read the full thread at thesamba):
Those little wires are like traces on a circuit board (The wiggly looking lines between time but I will bet it will be worth it.
Related shopping results:
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My rear defroster is not working, but i know why. My problem is that i'm not exactly sure how to fix it. The connector that supplies the power to the grid has become detached from the window. If i glue the corner of the connector back to the window, will...
Started by chirs on
, 12 posts
by 10 people.
Answer Snippets (Read the full thread at corral):
It's almost like a circuit board, any.
It's almost like a circuit board, any hairline fractures: : look carefully at each line make sure there are no breaks.
At each line make sure there are no breaks.
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Posted 4 days ago
Hello. I recently bought a pro street 94 Trans AM with the radio / climate controls missing. I have bought a factory CD player, installed, and it works fine. I have also bought and installed a factory climate control HVAC controls, however...
Started by Gamester007 on
, 11 posts
by 4 people.
Answer Snippets (Read the full thread at firebirdnation):
Is the rear defrost switch of your dash board and looked....
Is the rear defrost switch missing or broken (I vaguely remember them being like Pink, Purple, Green, Red or something).
Them being like Pink, Purple, Green, Red or something).
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Hi I am a homeowner and I have a goodman clpt42 which i installed in 2006. While the heatpump and the GMV 95 furnace have been problem free since the installation I always disliked the timed defrost feature since even set at 90 minutes my heatpump defrosts...
Started by carlb23 on
, 8 posts
by 4 people.
Answer Snippets (Read the full thread at diychatroom):
With the old defrost....
The demand defrost.
Update
Well it has been just about 5 days since i installed the Demand Defrost Board in my Goodman events which the board automatically does at 6 hours of compressor run time.
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Posted 30 January 2011 - 09:07 AM
I have an 86 F150. Regardless of the settings on the vent selector I have airflow coming out the a/c vents all the time. I can move the selector from vent to floor or defrost and internal components do open and close ...
Started by Bozinator on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at fordfzone):
This keeps the defrost....
The only problem is the air never shuts off from the vent and the defrost air flow is almost non existent.
Move the selector from vent to floor or defrost and internal components do open and close (I can hear them).
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