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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 13581
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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I have an Onan 12500 HDCAA generator. 11 years Yesterday

Customer Question

JA: Hello. What seems to be the problem?
Customer: Good morning, I have an Onan 12500 HDCAA generator.
JA: What's the make and model of the generator? And can you guesstimate how old it is?
Customer: 11 years Yesterday after running for several hours it shut down unexpectedly. when I try to restart it runs about a minute and shuts down. the code is 13.
JA: Do you plan on doing the work yourself?
Customer: The indicator light blinks rapidly. I have checked all the fluids. I will try to repair myself, but will take to shop if necessary
JA: Anything else we should know to help you best?
Customer: that is all I know right now
Submitted: 8 months ago.
Category: Small Engine
Expert:  Hank F. replied 8 months ago.

Hello, my name is ***** ***** I am going to assist you with this.

What is the full model number of the genset?

Customer: replied 8 months ago.
125HDCAB11506C Spec CThis morning it will run about 10 minutes and then shut down
This happens with the generator CB off.
Expert:  Hank F. replied 8 months ago.


The first thing I need you to do is to check the AC output of the genset at the output lead terminals while the genset is running for the minute.

How much voltage are you getting?

Next check the frequency. What frequency is it running at?

Customer: replied 8 months ago.
The voltage is 112V Phase to Neutral and 225V phase to phase with the coach main circuit breaker off.
I do not have a Hz meter with me, but I will buy one if you need that info
Expert:  Hank F. replied 8 months ago.

Yes, I am going to need to know what frequency the unit is running at.