Re: failsafe problems
 

I was looking at the wrong place yesterday during your visit. Found the culprit at last. Two copper tracks were burnt, possibly by an accidental short circuit on circuit board during the recent installation on the second car. It wasn't caused by incorrect wiring. A small puff of smoke should be seen during the incident.

Luckily it only affected the failsafe as the main injection circuit is independent to the failsafe section.

See red arrows.

http://www.aquamist.co.uk/HFS3/H3-forum/MR2-1.jpg

http://www.aquamist.co.uk/HFS3/H3-forum/MR2-2.jpg

Re: failsafe problems ::cause found::
 

Blimey, well done how did you notice that?
Do you think i would benefit from buying a version 2 gauge to match the controller? Are there enough difference's in the gauges?

Re: failsafe problems ::cause found::
 

It was staring at me all the time, mind was in the wrong place. The top broken track (bottom picture) was covered up by a large resistor).

You don't need to change the gauge, just send it back to me, the will lower the WL. I think you should cut x1 and solder link x1.5. You might be OK with the current WL.

Let me know if if improve the system with x1.5 linked.

Re: failsafe problems ::cause found::
 

Hi richard
I will send gauge to you for update if thats ok, would of done it sooner but lost my phone with all my forum login details and email

Re: failsafe problems ::cause found::
 

Not a problem sending. I will be away for the entire next week.

Re: failsafe problems ::cause found::
 

Hi Richard
I soldered the 1.5 link to see if it helped, having other issues now, what would cause this symptom-
"S" light turns off
Blue w-injection light turns off
And yellow failsafe light illuminates

Any thoughts would be appreciated

Re: failsafe problems ::cause found::
 

"S" light is associated with the yellow flow sensor harness. Check it first.
"Blue" water injection light monitors the 12V power into the gauge - check harness and plug.

If the "S" cable is faulty, the failsafe will come on as it does not see flow.

Re: failsafe problems ::cause found::
 

Ok I thought it might be loose wiring myself so I'll check them all
With 1.5 linked bars show much earlier on gauge (5 or 6) but as boost rises bars drop down to 1 or 2??

Re: failsafe problems ::cause found::
 

Check the inline filter if you have abnormal flow.
Put a jumper link on "FDC" and tell me if the fuel duty cycle ramps up linearly.

Re: failsafe problems ::cause found::
 

Hi Richard
Sorted the light issues, my plugs were all covered in dust and not getting a proper connection.

With jumper in FDC the gauge filled up so turned the gain down slightly to show 7 or 8 bars

With 1.5 linked now I was able to turn threshold back to 12 o'clock and trim WL WH closer to each other without failsafe activating at start of spray

System is now working perfectly in all conditons

Many thanks for your help