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06-07-2012, 12:31 PM
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#1
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Senior Member
Join Date: Apr 2012
Posts: 1,472
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Hard Start Capacitor
I have a 13.5 BTU A/C (Dometic). I want to add a hard start capacitor. I have searched here and other forums and seem to get conflicting info. Do I want the Supco spp6 or the SPP6E?. Thanks for any info....
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06-07-2012, 12:38 PM
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#2
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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Quote:
Originally Posted by bob213
I have a 13.5 BTU A/C (Dometic). I want to add a hard start capacitor. I have searched here and other forums and seem to get conflicting info. Do I want the Supco spp6 or the SPP6E?. Thanks for any info....
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No e I believe.
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06-07-2012, 01:00 PM
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#3
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Senior Member
Join Date: Dec 2011
Location: Southwest Wyoming
Posts: 588
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I put the SPP6 on mine and it worked fine.
__________________
2012 Grey Wolf 19RR
2008 Dodge 2500 CTD
Nights camped 2012 - 35
Nights camped 2013 - 46
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06-07-2012, 01:02 PM
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#4
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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Why do you want/need to install hard start?
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06-07-2012, 01:05 PM
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#5
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Senior Member
Join Date: Apr 2012
Posts: 1,472
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Quote:
Originally Posted by f1100turbo
Why do you want/need to install hard start?
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For easier starting when using my twin Honda 2000's?
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06-07-2012, 01:13 PM
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#6
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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Quote:
Originally Posted by bob213
For easier starting when using my twin Honda 2000's?
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Also I have a thread to delay fans while compresser starts and gets up and running. About a 5 second delay.
It helps!
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06-07-2012, 01:18 PM
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#7
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Senior Member
Join Date: Dec 2011
Location: Southwest Wyoming
Posts: 588
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Quote:
Originally Posted by bob213
For easier starting when using my twin Honda 2000's?
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It made a big difference in mine. It is very easy and cheap to do. They should come this way from the factory.
__________________
2012 Grey Wolf 19RR
2008 Dodge 2500 CTD
Nights camped 2012 - 35
Nights camped 2013 - 46
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06-07-2012, 02:09 PM
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#8
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Site Team - Lou
Join Date: Oct 2009
Location: South Eastern PA
Posts: 23,269
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So anyone have a wiring diagram/pictures of what wires to cut?
Inquiring minds and all that...
__________________
Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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06-07-2012, 02:23 PM
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#9
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Senior Member
Join Date: Jan 2012
Location: Keller, Texas
Posts: 6,090
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Quote:
Originally Posted by bob213
I have a 13.5 BTU A/C (Dometic). I want to add a hard start capacitor. I have searched here and other forums and seem to get conflicting info. Do I want the Supco spp6 or the SPP6E?. Thanks for any info....
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OK - I know what a capacitor is and what it's purpose is. My question is - are you talking about installing one in a unit that has its AC's powered by shore power only or in a unit that has an onboard generator?
I am having a second AC installed in my FW and the dealer just stated to make sure I wait about 30 seconds after starting the first one before starting the second one.
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06-07-2012, 02:39 PM
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#10
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Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
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Quote:
Originally Posted by herk7769
So anyone have a wiring diagram/pictures of what wires to cut?
Inquiring minds and all that...
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Plug and play
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06-07-2012, 03:46 PM
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#11
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Senior Member
Join Date: Apr 2012
Posts: 1,472
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If you already have a start capacitor it is a simple swap..2 wires. If not, you piggyback onto your run capacitor. The SPP6E has a instant restart feature where the SPP6 does not. I'm trying to find out which is the correct one to use?
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06-07-2012, 03:47 PM
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#12
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Senior Member
Join Date: Apr 2012
Posts: 1,472
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f1100turbo...please tell me more about the delay feature.
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06-07-2012, 03:48 PM
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#13
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Senior Member
Join Date: Dec 2011
Posts: 3,570
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Quote:
Originally Posted by herk7769
So anyone have a wiring diagram/pictures of what wires to cut?
Inquiring minds and all that...
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Here ya go I hope!
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06-07-2012, 03:53 PM
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#14
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Senior Member
Join Date: Dec 2011
Posts: 3,570
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Start Relay and Cap.
Quote:
Originally Posted by bob213
If you already have a start capacitor it is a simple swap..2 wires. If not, you piggyback onto your run capacitor. The SPP6E has a instant restart feature where the SPP6 does not. I'm trying to find out which is the correct one to use?
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e is for 5 horsepower, spp6 is for 3 HP per mfg. brochure. Don't think that a/c is 5 HP.
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06-07-2012, 03:59 PM
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#15
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Senior Member
Join Date: Apr 2012
Posts: 1,472
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Quote:
Originally Posted by VinceU
e is for 5 horsepower, spp6 is for 3 HP per mfg. brochure. Don't think that a/c is 5 HP.
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According to the link you posted above the 6E is for 1/2 to 3hp. The differenece seems to be the electronics of it.
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06-07-2012, 04:03 PM
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#16
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Senior Member
Join Date: Apr 2012
Posts: 1,472
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Quote:
Originally Posted by herk7769
So anyone have a wiring diagram/pictures of what wires to cut?
Inquiring minds and all that...
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Try this link:
RV Air Conditioner Hard Start Capacitor | ModMyRV
But I still get conflicting answers as to the 6 or 6E
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06-07-2012, 05:25 PM
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#17
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Senior Member
Join Date: Apr 2012
Posts: 1,472
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Reading down the list of comments on the above link from Modmyrv, I found this:
If you are adding a hardstart to your RV A/C unit, use the SPP6 [no E]. The SPP6E is not designed for 120VAC applications, The “E” series is also an instant restart unit, this does not allow the generator sufficient time to rampup to full power. The SPP6 has the preferred PTC relay and allows a longer ramp up time. The SPP6 is rated for 120VAC usage.
Remember for every thousand feet above sea level you generator drops 3% of output. On hotter days the A/C drops in efficiency as well. Check with your A/C manufacturer on the correct generator size for your unit. As far as I know there is not a manufacturer that will reccomend a 2000 watt generator to run a 13,500 BTU A/C unit.
If you have any questions about the SPP6 or any other Supco part, please contact us at 1-800-333-9125 ext. 261 our Tech Support will be glad to assist you.
Thanks,
Jim Berry
Director Product Management
Sealed Unit Parts Co., Inc.
Guess I'll go with the SPP6.
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06-07-2012, 10:12 PM
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#18
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Senior Member
Join Date: Dec 2011
Posts: 3,570
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Quote:
Originally Posted by bob213
Reading down the list of comments on the above link from Modmyrv, I found this:
If you are adding a hardstart to your RV A/C unit, use the SPP6 [no E]. The SPP6E is not designed for 120VAC applications, The “E” series is also an instant restart unit, this does not allow the generator sufficient time to rampup to full power. The SPP6 has the preferred PTC relay and allows a longer ramp up time. The SPP6 is rated for 120VAC usage.
Remember for every thousand feet above sea level you generator drops 3% of output. On hotter days the A/C drops in efficiency as well. Check with your A/C manufacturer on the correct generator size for your unit. As far as I know there is not a manufacturer that will reccomend a 2000 watt generator to run a 13,500 BTU A/C unit.
If you have any questions about the SPP6 or any other Supco part, please contact us at 1-800-333-9125 ext. 261 our Tech Support will be glad to assist you.
Thanks,
Jim Berry
Director Product Management
Sealed Unit Parts Co., Inc.
Guess I'll go with the SPP6.
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Agreed, most diff is the "e" is new and costs near 3x as much.
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06-08-2012, 07:46 AM
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#19
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Senior Member
Join Date: Dec 2011
Location: Southwest Wyoming
Posts: 588
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I read somewhere that a rep from Supco said not to use the SPP6E with a generator. I'm not sure but all I can tell you is I installed the SPP6 on my air conditioner and it works fine on both shore power and generator power.
__________________
2012 Grey Wolf 19RR
2008 Dodge 2500 CTD
Nights camped 2012 - 35
Nights camped 2013 - 46
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07-25-2012, 07:11 AM
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#20
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Member
Join Date: Apr 2009
Location: East Long Island, NY
Posts: 34
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Sorry - just tailing / searching the forum(s) - I have a 2006 Cherokee 305B 5er that just started having AC start up issues. After a trip from VA last week that was in the mid to upper 90's. The AC would run all day, then @ night when it finally reached the stat set temp the AC would shut off, BUT then on start up would blow the 20amp AC breaker. I'm looking to do this mod - add (replace~I think) the start up cap to a Supco Mfg. - SPP6 - Hard Start Capacitor (which is on its way in the mail).
Now just to be clear on the Hard Start Capacitor mod ( I haven't looked at my AC yet) - am I REPLACING or adding it? I have a Duo Therm AC unit. I hope to do these mods this week end - I would appreciate it if I could use your info and you to help out.
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