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Old 06-15-2016, 05:35 PM   #41
Tim & Lisa Trempert
 
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Beautiful picture. What error code is the generator giving you when it shuts down?


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Old 06-20-2016, 07:12 AM   #42
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First trip out with mine. Brand new 364TS transfer switch. Making loud buzzing and tripping out. Mainly stayed in but vibrating and buzzing. I get home shut it down let cool off. Crank generator back up. No more buzzing or tripping.
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Old 06-20-2016, 02:16 PM   #43
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Loud buzzing on first is normal as the components burn in. A low hum during operation is normal.

I just installed a PD52 DCS and it made the same noise. Also has strong overheating electrical smell. It all went away after about an hour.

Hasn't tripped yet but I haven't put a load on it either.
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Old 06-23-2016, 06:32 PM   #44
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Relay Switch

I just purchased a 2016 Georgetown 378XL. I have the same issue with the A/C running off the generator. The front one will come on but when I start the rear one I lose all power. I took it back to the dealer and they told me to take it to the Cummins dealer to have the generator checked. I haven't done that yet but it sounds as though nobody has found the root cause of the problem. I will keep checking back and will post what I find.

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Old 06-23-2016, 06:44 PM   #45
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Sorry to tell you it isn't the Transfer Switch. All it does is Transfer Power from either the Generator or Shore Power. Since the Front AC is working it Transfer Switch is working. When you turn on the Rear AC do you loose power to the Microwave? If you do then there is too much of a load on one of the 30 Amp Circuits. I had a problem with the Microwave had no Power. They found a broken wire. When I went to pick up my Motorhome I checked it out and guess what No Rear AC and no power to the Microwave. One of the Circuit Breakers on the Generator would trip as the Load was not balance between the two 30 AMP Circuits. Once they did that everything works perfectly. So if you go to the Cummings Dealer, I will almost bet you they tell you to go back to the Dealer and have them balance the load on each Circuit.
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Old 06-23-2016, 07:08 PM   #46
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Quote:
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Sorry to tell you it isn't the Transfer Switch. All it does is Transfer Power from either the Generator or Shore Power. Since the Front AC is working it Transfer Switch is working. When you turn on the Rear AC do you loose power to the Microwave? If you do then there is too much of a load on one of the 30 Amp Circuits. I had a problem with the Microwave had no Power. They found a broken wire. When I went to pick up my Motorhome I checked it out and guess what No Rear AC and no power to the Microwave. One of the Circuit Breakers on the Generator would trip as the Load was not balance between the two 30 AMP Circuits. Once they did that everything works perfectly. So if you go to the Cummings Dealer, I will almost bet you they tell you to go back to the Dealer and have them balance the load on each Circuit.
We are losing all power not half. What's happening is the transfer switch is not holding the load it is kicking out causing all power to be lost. Which is also not a Cummins issue.
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Old 06-23-2016, 07:55 PM   #47
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Your problem is strange since the Transfer Switch is like a two pole Switch. It is either in one position held closed in one position when the Generator is running and release to the other position when the Generator is not running, on Shore Power. Sounds like Relay is loosing it's Ground Point.
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Old 06-23-2016, 08:08 PM   #48
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Your problem is strange since the Transfer Switch is like a two pole Switch. It is either in one position held closed in one position when the Generator is running and release to the other position when the Generator is not running, on Shore Power. Sounds like Relay is loosing it's Ground Point.
I lot of people are having this same issue. It's like the contact switch that jumps in and out is being overloaded.
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Old 06-24-2016, 02:23 AM   #49
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If these are Progressive Dynamics PD52s give them a call and they will send out a new control board if you are still under warranty.

I was speaking tonthemmlast week and they said that might be the issue.

They also said that as A/C units age, they require more power to start so if you didn't install hard start caps, do that now.
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Old 06-24-2016, 03:41 AM   #50
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Same problem with mine, only happens when it's hot outside and I'm running Genset with both ACs.

Here is a video of the primary transfer switch on the right clicking. We removed it and are only using the new one on the left, haven't tested in heavy heat under load yet, but in pretty sure that solved the problem.

https://vimeo.com/172077475
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