Carrier Cool & Heat 8.81 Lbs Charge, Comp. Not Running - Fan Is Running - HVAC - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 07-23-2012, 09:15 PM   #1
Member
 
Join Date: Aug 2009
Location: Southwest Ohio
Posts: 493
Rewards Points: 376
Default

Carrier Cool & Heat 8.81 lbs Charge, comp. not running - fan is running


Carrier Model No: 38YKCO48320
Serial No:3201E02815
Charge: (on data plate): 8.81 lbs.

No other Model No. designations on this cabinet, unless it was under the installer's label?

Condenser Fan running upon my arrival .

Compressor not running apparently (no warm/hot air discharge from condenser fan), upon arrival. Also no comp. buzz sound, like the other condenser unit nearby).

Pulled disconnect, looked inside - compressor very warm.

Condenser is clean. Haven't checked evaporater yet (tomorrow morning).

Only compressor sound is a short-lived groan, then nothing. I have a Bramec Kicker-6 hard start cap (appropriate for this comp. according to the spec's on this hard start unit) if a hard start cap is recommended here? (one wire to Herm, the other to common on the dual run cap?). I could also buy a better one if recommended (hard start cap).

I know how to ohms test the compressor terminals if I need to do that - will anyway for the experience.

Dual run capacitor was replaced last year (60 x 5 x 440volts). Haven't checked it yet - will be checking it tomorrow morning. No swelling or leakage of cap. Looks new - connections & wires good.

240 or better volts on secondary side/load side of contactor (haven't checked its points yet, or voltage at compressor terminals - terminals very clean however

3 wires from cap (1) and contactor (2) (feeding comp.) appear in very good shape, but need to check 'em with meter in the morning. All wire connections in great shape & not loose.

At the bottom on the cabinet where the small line (high side) runs parallel to that side of the cabinet before exiting cabinet, there is a switch of some sort in this line (high pressure switch?) with its two wires not connected to anything - just laying there at the bottom of cabinet.

Thanks so much for any help.

Advertisement


Last edited by justplumducky; 07-23-2012 at 10:01 PM.
justplumducky is offline   Reply With Quote
Old 07-23-2012, 09:43 PM   #2
Member
 
Join Date: May 2010
Location: winnipeg manitoba canada
Posts: 779
Rewards Points: 500
Default

Carrier Cool & Heat 8.81 lbs Charge, comp. not running - fan is running


oh my.. really ...any pictures

Advertisement

carmon is offline   Reply With Quote
Old 07-23-2012, 09:47 PM   #3
Member
 
Join Date: Aug 2009
Location: Southwest Ohio
Posts: 493
Rewards Points: 376
Default

Carrier Cool & Heat 8.81 lbs Charge, comp. not running - fan is running


Sorry, no pics - just got a new phone and have no way to get the pics online yet. Thx for your response.
justplumducky is offline   Reply With Quote
Old 07-23-2012, 10:05 PM   #4
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 26,419
Rewards Points: 4,488
Default

Carrier Cool & Heat 8.81 lbs Charge, comp. not running - fan is running


Try the hard start and see if it runs.
beenthere is online now   Reply With Quote
Old 07-23-2012, 10:10 PM   #5
Member
 
Join Date: Aug 2009
Location: Southwest Ohio
Posts: 493
Rewards Points: 376
Default

Carrier Cool & Heat 8.81 lbs Charge, comp. not running - fan is running


Thank you beenthere for your help once again. You really helped me last time.

If the hard start doesn't help and the ohms check is ok (and no short to comp. case after scratching the paint off), is comp's goose cooked due to internal malfunction, assuming proper voltage at comp. terminals and good contacts in the relay (contactor)?
justplumducky is offline   Reply With Quote
Old 07-23-2012, 10:11 PM   #6
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 26,419
Rewards Points: 4,488
Default

Carrier Cool & Heat 8.81 lbs Charge, comp. not running - fan is running


If it doesn't free up, and is drawing LRA it done for.
beenthere is online now   Reply With Quote
Old 07-23-2012, 10:13 PM   #7
Member
 
Join Date: Aug 2009
Location: Southwest Ohio
Posts: 493
Rewards Points: 376
Default

Carrier Cool & Heat 8.81 lbs Charge, comp. not running - fan is running


Ok, one last question please. Is needing a hard start (if it frees up) a possible sign of impending doom for the comp?

Last edited by justplumducky; 07-23-2012 at 10:16 PM.
justplumducky is offline   Reply With Quote
Old 07-23-2012, 10:17 PM   #8
Member
 
Join Date: Jul 2012
Location: MD
Posts: 272
Rewards Points: 250
Default

Carrier Cool & Heat 8.81 lbs Charge, comp. not running - fan is running


does that unit hav a thermistor starter. If so remove it before installing the hard start. a thermistor starter is plastic cylinder with wires in the top bottom and side. It will wire into the capaitor and is a starting device. carrier recomend a liq line solinoid valve to be field connected for long line applications not sure if that is what you are seeing.
turnermech is offline   Reply With Quote
Old 07-23-2012, 10:19 PM   #9
Member
 
Join Date: Jul 2012
Location: MD
Posts: 272
Rewards Points: 250
Default

Carrier Cool & Heat 8.81 lbs Charge, comp. not running - fan is running


it is not a good sign. But they can run for quite a long time after adding one
Quote:
Originally Posted by justplumducky View Post
Ok, one last question please. Is needing a hard start (if it frees up) a possible sign of impending doom for the comp?
turnermech is offline   Reply With Quote
Old 07-23-2012, 10:26 PM   #10
Member
 
Join Date: Aug 2009
Location: Southwest Ohio
Posts: 493
Rewards Points: 376
Default

Carrier Cool & Heat 8.81 lbs Charge, comp. not running - fan is running


Okay, thank you turner~ (about the impending doom question). The thermistor starter device sounds like a "start capacitor" I've been hearing about and they are always or usually black in color I've heard. I'm pretty sure there isn't one, but I'll double check.
justplumducky is offline   Reply With Quote
Old 07-23-2012, 10:28 PM   #11
Member
 
Join Date: Aug 2009
Location: Southwest Ohio
Posts: 493
Rewards Points: 376
Default

Carrier Cool & Heat 8.81 lbs Charge, comp. not running - fan is running


Was I right about the hook-up of the two wires (only two) on the hard start? One to common and the other to herm? No polarity necessary, correct?
justplumducky is offline   Reply With Quote
Old 07-23-2012, 10:31 PM   #12
Member
 
Join Date: Jul 2012
Location: MD
Posts: 272
Rewards Points: 250
Default

Carrier Cool & Heat 8.81 lbs Charge, comp. not running - fan is running


hard start wires as you state. thermistor starters are most of the time blue or yellowish in color
turnermech is offline   Reply With Quote
Old 07-23-2012, 10:31 PM   #13
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 26,419
Rewards Points: 4,488
Default

Carrier Cool & Heat 8.81 lbs Charge, comp. not running - fan is running


Quote:
Originally Posted by justplumducky View Post
Was I right about the hook-up of the two wires (only two) on the hard start? One to common and the other to herm? No polarity necessary, correct?

Correct.
beenthere is online now   Reply With Quote
Old 07-23-2012, 11:05 PM   #14
Member
 
Join Date: Jul 2012
Location: MD
Posts: 272
Rewards Points: 250
Default

Carrier Cool & Heat 8.81 lbs Charge, comp. not running - fan is running


Quote:
Originally Posted by turnermech View Post
does that unit hav a thermistor starter. If so remove it before installing the hard start. a thermistor starter is plastic cylinder with wires in the top bottom and side. It will wire into the capaitor and is a starting device. carrier recomend a liq line solinoid valve to be field connected for long line applications not sure if that is what you are seeing.
I had another though if what your describing is a liq line solenoid (which I cant say for sure just by your description) carrier would have also recommend a hard start be added if it did not have one from the factory. IIRC long line set would have been anything over 80' total run or 20' lift.
turnermech is offline   Reply With Quote
Old 07-23-2012, 11:19 PM   #15
Member
 
Join Date: Aug 2009
Location: Southwest Ohio
Posts: 493
Rewards Points: 376
Default

Carrier Cool & Heat 8.81 lbs Charge, comp. not running - fan is running


Quote:
Originally Posted by turnermech View Post
I had another though if what your describing is a liq line solenoid (which I cant say for sure just by your description) carrier would have also recommend a hard start be added if it did not have one from the factory. IIRC long line set would have been anything over 80' total run or 20' lift.
I was going to respond about that - sorry I forgot. Nowhere near 80' run or 20' lift. This unit is one of three or four retail spaces in a very small strip of stores. Condenser units are right out the back door and the air handler is in the utility room which is is pretty close to if not adjacent to the back wall (cond. unit is on the outside of the back wall). Virtually no lift.

Afraid I didn't look closely at that "switch", as I called it. I will tomorrow though and get back. The only thing I can tell you about it at the moment is that those two wires didn't appear to have come loose from anything. They were laying there neatly stretched out in parallel with the liquid line. Thx so much for your help.

Advertisement


Last edited by justplumducky; 07-23-2012 at 11:23 PM.
justplumducky is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Is there a way to have heat, cool and fan all on same blower speed? pirateo HVAC 4 08-14-2009 05:13 PM
Help..Emergency Heat Running All the Time KatieB HVAC 4 02-25-2009 05:55 AM
Aux heat always running and high energy bills BurningMad1 HVAC 1 02-07-2009 05:50 AM
Carrier 58MCA Furnace No Heat (Error 33) zerafah49 HVAC 1 12-10-2008 08:32 PM
Wiring help - Honeywell Thermostat w/ Carrier Heat Pump Tom Williams HVAC 7 09-14-2008 08:40 AM




Top of Page | View New Posts