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Promac questions
- Thread starter lmm600
- Start date
spark
Active Member
Mag pickup usually on bell housing unless they are using generator frequency and the generator is not putting out voltage. What control is being used?
Birken Vogt
Charter Member
Is this an electronic engine or mechanical? What controller are we talking about, engine or generator controller? Who made the controller, picture of it in case somebody rebadged it.
AC03, I think. I'm also going to say mechanical, even though the controller does everything, from starting to shut down. That is my problem, I have three of these generators that I need to get operating and all three are doing different things.
#1; controller says its going through its prestart, cranking etc and the engine is doing nothing at all.
#2; actually runs (so far, after a lot of work) haven't checked if it is making power.
#3; Controller starts it , cranks for 5 seconds and shuts down. Has a rpmmeasfail code. So I'm guessing its getting a no rpm code and controller is shutting down like it supposedly should.
How do I find exact model?
AC03 is what it says on controller face. I think, I'm not near them at the moment. I have three that I'm working on.
MarshallPowerGen
Senior Member
- Joined
- Nov 26, 2017
- Messages
- 446
- Location
- Northwestern USA
- Occupation
- Generator Technician & Equipment Mechanic
Looking online I don't recognize the controller from the pictures of the Pramac GBW series and agreed, they don't seem to have much info online.
There should be a silver metal tag on the valve cover that will have 3TNV88-**** and engine number which will give more info on specifics to the engine.
Where in Idaho are you located, and who imported these things that you have 3 to work on? Are they rental units, boats, standby?
There should be a silver metal tag on the valve cover that will have 3TNV88-**** and engine number which will give more info on specifics to the engine.
Where in Idaho are you located, and who imported these things that you have 3 to work on? Are they rental units, boats, standby?
Birken Vogt
Charter Member
It seems to be the week for strange generators having strange problems, good thing is, they all work about the same.
MarshallPowerGen
Senior Member
- Joined
- Nov 26, 2017
- Messages
- 446
- Location
- Northwestern USA
- Occupation
- Generator Technician & Equipment Mechanic
That EPA IV is just a Tier 4 tag (so definitely not from Idaho, haha). Did they come from Northwest Generators, by chance? They always seem to be moving "different" stuff, and yeah I'm just up the road from you.
I'll see what all Yanmar docs I have stashed for that series of engine and maybe we'll find one that matches what you're working on. You might want to shoot an email to Pramac with serials and see if they can email you anything they have in the meantime.
I'll see what all Yanmar docs I have stashed for that series of engine and maybe we'll find one that matches what you're working on. You might want to shoot an email to Pramac with serials and see if they can email you anything they have in the meantime.
Not from Northwest Generators. Some outfit just north of them (I believe its Absolute Power, thats a whole different story). From what i've found out Pramac only exists outside of the U.S., Generac bought them a few years ago. One generator we have got to run I think correctly. The other two run only when I "hot wire" certain circuits. Like the shut off solenoid and fuel lift pump. One has a rpmmeasfail code and the other has that code along with a alt fail code, even though on its own control screen its says its charging 13.8v. I need to figure out how to post pictures.
MarshallPowerGen
Senior Member
- Joined
- Nov 26, 2017
- Messages
- 446
- Location
- Northwestern USA
- Occupation
- Generator Technician & Equipment Mechanic
Dug around a bit on my lunch and think I found your controller manual online.
https://www.scribd.com/document/293509863/AC03-2-0-Reference-Guide
Scanning through it shows your code as missing signal from mag pickup, so doubt it's reading gen frequency.
I have some Yanmar files for those series of engines I'll bring home this weekend and can email to you.
https://www.scribd.com/document/293509863/AC03-2-0-Reference-Guide
Scanning through it shows your code as missing signal from mag pickup, so doubt it's reading gen frequency.
I have some Yanmar files for those series of engines I'll bring home this weekend and can email to you.
MarshallPowerGen
Senior Member
- Joined
- Nov 26, 2017
- Messages
- 446
- Location
- Northwestern USA
- Occupation
- Generator Technician & Equipment Mechanic
I have a pile of TNV series manuals I can email you, but without knowing the specific engine it might just add more confusion. I did look in a Yanmar T4 reference book and found where your crank sensor should be located.
If you can provide any pictures of the engines we can narrow it down by the fuel system type.
Some controllers will read engine speed off of the generators frequency/HZ at the AC output, the sets you're working on are most likely reading off of a crank sensor from what I could gather in that AC03 manual link above.
If you can provide any pictures of the engines we can narrow it down by the fuel system type.
Some controllers will read engine speed off of the generators frequency/HZ at the AC output, the sets you're working on are most likely reading off of a crank sensor from what I could gather in that AC03 manual link above.
I can't find anything on bell housings. wish I could figure out how to get post pictures ( I have pix of most things on generators) .I have a pile of TNV series manuals I can email you, but without knowing the specific engine it might just add more confusion. I did look in a Yanmar T4 reference book and found where your crank sensor should be located.
If you can provide any pictures of the engines we can narrow it down by the fuel system type.
Some controllers will read engine speed off of the generators frequency/HZ at the AC output, the sets you're working on are most likely reading off of a crank sensor from what I could gather in that AC03 manual link above.
Also, controller says generators that run are putting out 220v and 60 htz.
Would you have any recommendations on anyone that might be interested in coming down and working on these things?
MarshallPowerGen
Senior Member
- Joined
- Nov 26, 2017
- Messages
- 446
- Location
- Northwestern USA
- Occupation
- Generator Technician & Equipment Mechanic
Sent you a PM.
Marshall (got your pm, thanks); can't find anything at all on bellhousings that resembles a sensor. What is this about a frequency sensor that can sense the rpm? My son and I are working slowly almost wire by wire and we're making some progress. But thus rpmeasfail fault is driving us nuts. The other faults you can work your way through them, but since we cannot find the way these engines measure rpm its aggravating.
Anyone with any input, please help!
Anyone with any input, please help!