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Thanks for your suggestion & to clarify, you are referring to the laser safety beam/light that runs across the door opening that prevents accidential closures if something is in the way? I'll chack...

:confused: My 15 y/o Overhead Door (brand) garage door opener was working fine opening & closing until a few days ago. It has very low usage because I mostly park my car outside the garage door. Now...

I would be very, very careful... I called and talked with DirectBuy sales rep who needed my personal info and a firm appointment before they would reveal address of sales location. I do not think...

I'm trying to decide how to repair a 10'X12" bedroom ceiling sheet rock where by the center light fixture has dropped down about 2" to 3" due to a previous slow water drip (since repaired). I have...

My 2cents is that you figure out what your overall budget for the whole house (interior and exterior) improvements. Figure out what all needs to be done, prioritize this list and put a $$$ number to...

I presume the inline fuse holder is on one side of the 24vac lines out? I'm guessing that just unplugging the blower motor 120v ac from the wall will turn off power to control board & heater? I'm...

I checked a couple of similar size 120v to 24v transformers 40va and the output voltage read 27.5v and the other was 26.2 v. Is this +10% voltage differential going to be a problem for the control...

Thanks T-Top:)

There was no voltage 0.00 between sec 1 and sec 2. There was 120.0 volts between line 1(black) and line 2 (white) on the board which looks like ac power to disconnect switch. There...

Thank you for responding! There are two cube shaped relays (labeled CFR & HFR) hard soddered? On the blower control board. I tapped on both with end of screwdriver but no response!

Thanks T-Top

I did the above steps and only got 0.00 volts between R and C on the control board. I tested a few other positions and got same 0.00 reading. This was while the fan blower was running...

Thanks T-Top and letmetellu for your comments:)

My thought is that something very simple is preventing the new t-stat from operating the heating & a/c unit?? I carefully opened up the blower...

They have not changed their dating system. Thank you for correcting my reply!:)

The first 4 numbers of the serial number should be date of mgf. i.e. 1792 would be Jan 7 1992. There are separate number for the heating and A/C units. Hope this helps?

:confused: Day & Night by Carrier central heating and a/c unit

a/c unit model # 518CXX057000MACA date of mgf=1791

heating unit model# 394JAZ060080AAFA date of mgf=4592

Efficiency= natural...