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Old 09-29-2014, 09:52 PM   #1
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Generator issue documented with video

2013 3011DS generator issue: surges only when Dometic AC/Heat Pump compressor is used regardless of load. 3 videos showing voltage, freq, load and results.

VIDEO0037 on Vimeo
VIDEO0038 on Vimeo
VIDEO0039 on Vimeo
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Old 09-29-2014, 10:02 PM   #2
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After watching my own videos again, the only difference I see the compressor is making is that it is dropping the output voltage of the generator by several volts.

Other facts: Generator has 155.5 hours on it, oil has been changed twice and the fuel pump was replaced under warranty as it would not start or run hardly at all when new.
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Old 09-29-2014, 10:18 PM   #3
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Quote:
Originally Posted by EXTremist View Post
2013 3011DS generator issue: surges only when Dometic AC/Heat Pump compressor is used regardless of load. 3 videos showing voltage, freq, load and results.

VIDEO0037 on Vimeo
VIDEO0038 on Vimeo
VIDEO0039 on Vimeo
Since the unit will deliver full load, can't be much wrong with engine or fuel system. The only difference I note is the A/C is "inductive load" where the water heater and space heater are resistive load. That may be a idea to provide to Dometic engineers or FR. Seems like somehow they are out of sync. causing way too much apparent power (false load).
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Old 09-29-2014, 10:29 PM   #4
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Thanks! I will study up on the differences between the two. Been a long time but I do have an electrical degree.
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Old 09-29-2014, 10:34 PM   #5
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Thanks! I will study up on the differences between the two. Been a long time but I do have an electrical degree.
I guess unsaid, would appear the heat pump is the problem, but just guessing.
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Old 09-29-2014, 11:09 PM   #6
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The more I research at Flight Systems the more I lean towards a very slightly defective regulator. Spendy guess though.
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Old 09-30-2014, 11:41 AM   #7
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good video. Forwarded this on to Dometic.
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Old 09-30-2014, 11:49 AM   #8
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Yes you should forward those videos to the gen guys, Dometics guys, and FR. Have you checked the capacitors on the roof A/C heatpump unit yet?
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Old 09-30-2014, 11:55 AM   #9
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EXTremist. Have you tested that just running the 15k A/C on high? is it just on heat pump low fan?
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Old 09-30-2014, 10:21 PM   #10
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Any use of the compressor either AC or heat pump low or high will cause the generator to surge. As I stated in the video, the AC running in the heat will cause the gen to die completely. Thanks.
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