Results 14 to 25 of 25
-
11-02-2012, 09:42 PM #14
Professional Member*
- Join Date
- Dec 2011
- Location
- San Antonio, TX
- Posts
- 266
What's the model number of the unit? Also, what kind of stat, digital or mercury?
-
11-02-2012, 10:00 PM #15
Regular Guest
- Join Date
- Nov 2012
- Posts
- 12
I dont have it with me. I wrote it down at work and its still there.
-
11-02-2012, 10:19 PM #16
Regular Guest
- Join Date
- Nov 2012
- Posts
- 12
Digital stat
-
11-02-2012, 11:06 PM #17
Professional Member*
- Join Date
- Dec 2011
- Location
- San Antonio, TX
- Posts
- 266
Wiring looks ok from the pic, but without a diagram...and you replaced the sequencer, watched it cycle off.
Ohm the sequencer, check no/nc. Ohm the wires as well. Sounds like something is keeping the signal when it shouldn't. Double check 24v.
-
11-03-2012, 12:25 AM #18
Regular Guest
- Join Date
- Nov 2012
- Posts
- 12
I will do that. Thanks for your help. I'll let ya know.
-
11-03-2012, 09:21 AM #19
Global Moderator
- Join Date
- Jan 2004
- Location
- Lancaster PA
- Posts
- 62,169
Next time you go back to that apartment. Set the thermostat to 77 and see how many hours it has to run. Good chance at night time its not able to reach 77, or just takes hours on end to do so.
-
11-03-2012, 10:11 AM #20
Professional Member*
- Join Date
- Feb 2008
- Location
- pulaski ny
- Posts
- 1,616
this may be a stupid question but is it a programable t-stat?
-
11-03-2012, 10:26 AM #21
Professional Member*
- Join Date
- Aug 2009
- Location
- Beatrice, NE
- Posts
- 1,162
That sequencer is heat activated, it has a heater that heats up to turn the unt on and has to cool down to shut off. Is the control box getting to hot after running for hours to get it to 77 that it can't cool down enough to shut off?
-
11-03-2012, 10:37 AM #22
Regular Guest
- Join Date
- Jul 2012
- Posts
- 18
I was thinking the same thing!
Originally Posted by snupytcb
I had a similar issue once. I just replaced the sequencer with a two pole contractor.
Sent from my SAMSUNG-SGH-T989 using Tapatalk 2
-
11-05-2012, 09:19 PM #23
New Guest
- Join Date
- Feb 2012
- Posts
- 2
Replace the circuit board,I have ran into this before
-
11-05-2012, 09:30 PM #24
Professional Member*
- Join Date
- Jul 2009
- Location
- Columbia, MD
- Posts
- 2,683
screw it...just replace the whole unit....geeeeez. Originally Posted by craigsac
seems like the sequencer is staying heated, not allowing the heaters to shutoff. i also believe if the sequencer closes it brings on the fan. am i correct?
this would explain it. try using a 40amp resistive load contactor to replace the sequencer
-
11-06-2012, 07:38 AM #25
Professional Member*
- Join Date
- Oct 2002
- Posts
- 674
Clean the evap coil!
Because the evap coil is clogged, the electrical compartment is getting very hot and heating the heat sequencer. Since sequencer relies on 24 volt W signal to heat the 24 volt coil to intiate the sequence timer it closes the circuit to the elements, but the compartment heat is heating the 24 coil instead. Now you have a runaway heat situation.
You will only see this if you put a remote temperature probe inside the contron compartment and reinstall all covers.
Reply With Quote
