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06-27-2015, 08:48 PM
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#1
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Senior Member
Join Date: Mar 2013
Location: The Evergreen State
Posts: 493
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A/C Compressor not kicking in
96 Chevy Bounder: NewColeman Rear 11K BTU A/C unit just blows air and the Compressor is not kicking in after several minutes of operation, measured by amps. I check the wiring hook-up several times. Could it be the ECC stat on the wall or the ECC Energy Management Unit Master Controller? Any Troubleshooting ideas?
And how do you operate the heat strip via ECC on the wall?
48207-C966 A/C
9430-4552 Inside Plenum
9233A4551 Heat Strip
9330C755 Control Package
Thanks
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06-28-2015, 05:20 AM
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#2
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Senior Member
Winnebago Owners Club Ford Super Duty Owner
Join Date: Jul 2012
Posts: 371
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One of the first things that could be evaluated is the amount of refrigerant in the system. There is a high / low pressure sensor that will prevent the compressor from turning on if the pressure is too high or low.
There is a low pressure side fitting where you can check this pressure. Any AC shop will have this gauge or you can buy a recharge kit w/ gauge at any auto parts store for cheap and check it yourself. (IF this unit is self-serviceable)
OR you may have a leak in your system which could be evaluated by an AC shop.
If I read your Post correctly, you have a "new" Coleman unit......possibly have the installer check it out at at least make a phone call.......?
.....Just one of the easiest and quickest things to check. I like to look at the simple things first.
Please let us know how you make out.
Thanks.
__________________
2001 Winnebago Adventurer 32V, Ford F-53, V-10
2008 Jeep Grand Cherokee Limited, 4.7L V-8 QTII
U. S. Army Vet, In God We Trust
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06-28-2015, 06:03 AM
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#3
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Senior Member
Workhorse Chassis Owner
Join Date: Sep 2007
Location: st.charles mo.
Posts: 1,482
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There is also a relay that can fail.
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06-28-2015, 06:21 AM
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#4
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Senior Member
Winnebago Owners Club Ford Super Duty Owner
Join Date: Jul 2012
Posts: 371
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Yes, and just because something is "New" today doesn't mean it will work.......!!!!!!
Many professional installers are their own worst enemy.
(We could start a thread on this but better not...!!!)
Did the unit work at first????? and for how long????
__________________
2001 Winnebago Adventurer 32V, Ford F-53, V-10
2008 Jeep Grand Cherokee Limited, 4.7L V-8 QTII
U. S. Army Vet, In God We Trust
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06-28-2015, 06:46 AM
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#5
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Senior Member
Fleetwood Owners Club
Join Date: Jun 2009
Posts: 4,031
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Ducted or unducted?
A new Coleman usually has a 8000 series number not what you posted.
With a EMS on a Fleetwood. It will not even let the fan run when cutting the power.
__________________
99 Discovery 34Q ISB
2014 MKS AWD EcoBoost Toad
Fulltime Since "99"
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06-28-2015, 09:31 AM
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#6
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Senior Member
Join Date: Mar 2013
Location: The Evergreen State
Posts: 493
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Quote:
Originally Posted by winnie32v
Yes, and just because something is "New" today doesn't mean it will work.......!!!!!!
Many professional installers are their own worst enemy.
(We could start a thread on this but better not...!!!)
Did the unit work at first????? and for how long????
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Yeah the unit is new and I am the installer and was very careful, trying to save some bucks. The unit never worked as for blowing cold air. I will make the call to Coleman or is it Airxcel now on Monday.
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06-28-2015, 09:38 AM
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#7
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Senior Member
Join Date: Mar 2013
Location: The Evergreen State
Posts: 493
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Quote:
Originally Posted by Triker56
Ducted or unducted?
A new Coleman usually has a 8000 series number not what you posted.
With a EMS on a Fleetwood. It will not even let the fan run when cutting the power.
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It's a duct A/C unit. So I guess my ECC/EMS is working correctly if everything is operating correctly EXCEPT not the A/C compressor. BTW~ I listed part numbers.
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06-28-2015, 10:42 AM
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#8
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Senior Member
Join Date: Mar 2013
Location: The Evergreen State
Posts: 493
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Quote:
Originally Posted by winnie32v
One of the first things that could be evaluated is the amount of refrigerant in the system. There is a high / low pressure sensor that will prevent the compressor from turning on if the pressure is too high or low.
There is a low pressure side fitting where you can check this pressure. Any AC shop will have this gauge or you can buy a recharge kit w/ gauge at any auto parts store for cheap and check it yourself. (IF this unit is self-serviceable)
OR you may have a leak in your system which could be evaluated by an AC shop.
If I read your Post correctly, you have a "new" Coleman unit......possibly have the installer check it out at at least make a phone call.......?
.....Just one of the easiest and quickest things to check. I like to look at the simple things first.
Please let us know how you make out.
Thanks.
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I thought Roof A/C's aren't fitted with the connections necessary for refilling their refrigerant levels.
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06-28-2015, 05:17 PM
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#9
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Senior Member
Join Date: Apr 2012
Posts: 573
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You said according to the amps. Do you have a amp probe? If so does the compressor try to start? If it will try and start by pulling high amps then dropping out that will help determine a control issue from a starting issue like a bad relay or run capacitor. Also is the compressor hot to the touch?
__________________
2015 Winnebago Tour 42QD
Cummins 8.9 ISL 450
Freightliner XCL W/IFS
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06-28-2015, 05:31 PM
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#10
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Senior Member
Tiffin Owners Club
Join Date: Mar 2015
Location: Southern NM
Posts: 2,514
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Quote:
Originally Posted by leesdx1
I thought Roof A/C's aren't fitted with the connections necessary for refilling their refrigerant levels.
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you are right, I think Winnie was thinking it was the A/C on the coach
__________________
2005 Tiffin Allegro Bay 37DB
W22 Workhorse Chassis 8.1 Flat Towing a 82 Jeep CJ7
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06-28-2015, 05:40 PM
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#11
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Senior Member
Ford Super Duty Owner
Join Date: Dec 2009
Location: Mcdonough, Ga.
Posts: 5,773
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Do you have the shed system by intellitec? Does the red light keep blinking that shows your load is shedding? If you have the shed system, go to the control box and switch the sliding ac control switch to rear ac and see if the ac comes on.
__________________
1998 Pace Arrow 35 ft. F53 Ford V10 2014 Honda CRV toad
32 years mechanic at Delta Air Lines 15 year motorhome service manager. 3 popups....2 travel trailers....5 motorhomes....loved them all.
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06-28-2015, 08:11 PM
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#12
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Senior Member
Join Date: Mar 2013
Location: The Evergreen State
Posts: 493
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Quote:
Originally Posted by asuperheat
You said according to the amps. Do you have a amp probe? If so does the compressor try to start? If it will try and start by pulling high amps then dropping out that will help determine a control issue from a starting issue like a bad relay or run capacitor. Also is the compressor hot to the touch?
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I have one of those TM-2025-RV Monitor. The new A/C's compressor does not even try to start and not hot to touch. My old Coleman had the same issue, but since the beast is a 96 i thought it had a leak. The 2 years I had her it never worked, (the compressor does not kick in). So with the same problem with the new unit its doubtful its the A/C unit.
Triker56...Post #5, When you say EMS are you referring to the ECC or ECC Control Module? I think either one can be defect and still run the fan.
Anyway, I did some trouble shooting today and I'm pointing the problem to the ECC Control Module. Yikes 170 bucks
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06-28-2015, 08:15 PM
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#13
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Senior Member
Join Date: Mar 2013
Location: The Evergreen State
Posts: 493
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Quote:
Originally Posted by ga traveler
Do you have the shed system by intellitec? Does the red light keep blinking that shows your load is shedding? If you have the shed system, go to the control box and switch the sliding ac control switch to rear ac and see if the ac comes on.
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I do have the shed system. The light blink for 1 or 2 mins then turns green but no compressor, just fan air blowing.
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06-29-2015, 07:07 AM
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#14
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Senior Member
Ford Super Duty Owner
Join Date: Dec 2009
Location: Mcdonough, Ga.
Posts: 5,773
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Quote:
Originally Posted by leesdx1
I do have the shed system. The light blink for 1 or 2 mins then turns green but no compressor, just fan air blowing.
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On the intellitec board there is a switch that says AC test. Have you gone to the board and set the switch on rear AC test?
__________________
1998 Pace Arrow 35 ft. F53 Ford V10 2014 Honda CRV toad
32 years mechanic at Delta Air Lines 15 year motorhome service manager. 3 popups....2 travel trailers....5 motorhomes....loved them all.
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