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Ask Hank F. Your Own Question
Hank F.
Hank F., RV tech - emphasis on gensets
Category: RV
Satisfied Customers: 14565
Experience:  RV tech since the beginning of the millenium.
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I have a Generac NP-52G gas generator in my motorhome. It

Customer Question

I have a Generac NP-52G gas generator in my motorhome. It has stopped producing AC power. Red LED flickers at start up, then goes out. Engine stops after 15-20 secs after running. I have replaced the voltage regulator, 12DC Relay and 20amp breaker. Before it quit producing power, the plug from the generator feeding RV power was really hot.
JA: Do you have fuel in the tank? If so, is the shut-off valve open and the fuel clean?
Customer: yes
JA: Do you plan on doing the work yourself?
Customer: yes
JA: Anything else we should know to help you best?
Customer: the 12vdc relay coil unraveled before this started and shorted out the 20 amp breaker and itself. I replaced both and it work for awhile longer and then the no power issue started. it quit when both AC's were running.
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Small Engine Technician about your situation and then connect you two.
Submitted: 7 months ago.
Category: RV
Expert:  Hank F. replied 7 months ago.

You need to check the DPE breaker, brushes and slip rings.

Customer: replied 7 months ago.
Hi Hank,What and where is th DPE breaker located...?
Expert:  Hank F. replied 7 months ago.

The DPE is the Dual Phase Excitation breaker. It is located inside the control box.

Customer: replied 7 months ago.
Thanks, Hank! I can't find the DPE in the schematics, can you give me a description of what it looks like and can it be reset like a normal breaker? Thanks, Jeff
Expert:  Hank F. replied 7 months ago.

What are the model and serial numbers of the genset?

Customer: replied 7 months ago.
Model number(###) ###-####0
Serial Number(###) ###-####
Expert:  Hank F. replied 7 months ago.

That is the model number of the engine, not the genset.

I can't use it.