APU will not start.

[Dean33]

In career mode and I’ve created a new aircraft. 
 

on start up I have a persistent error on the left APU button. 
 

PUMP FAIL

and

SOV CLOSED

Thanks. 

[rjb4000]

 

[FYG001]

Guys, this problem returned to me, probably after a switch of aircraft. XP12.03R1.

Here are the conditions:

• APU Battery connection active in the Ground services menu (even though the below screenshots says OFF, it is ON with white bullet lit at the front of the selection line)
• APU CB's on CBP 1 Row L in and checked
• APU ECU reset on the little aft panel many times
• In different conditions related to the APU switchlight buttons, in /out and mixed
• In the Study section APU shows starter loads up to 7.000 Hp before dropping off
• Stopped, restarted XP12
• Switched aircraft and restarted
• Repaitred all damage
  
  All to no avail, APU does not start - switchlight PUMP FAIL / SOC closed - and on the MFD APU SOV - APU NEG-G SOV - APU PUMP

Log.txt

Edited February 13, 2023 by FYG001

[VirtualAviator]

Did you try clearing the fault in the APU panel? There are a couple ways to do it.

1.  Walk outside to the APU panel open it and reset the fault, or;
2. Open the APU Fault from the Popup Panels pull down menu.

Hope this helps.

[FYG001]

Thanks for the suggestions, 

Option 1 I did many times, 

Option 2 also used, no joy

Edited February 14, 2023 by FYG001

[FYG001]

I have added the electrical scheme, part dealing with the APU and all seems correct, but still the APU doesn't start
Checked the FCOM 2 of the CL650 but no hints either

Also checked the fuel system and that looks good too

 

 

 

Edited February 14, 2023 by FYG001

[FYG001]

I have now reinstalled the aircraft from scratch, problem persists 

[Pils]

23 minutes ago, FYG001 said:

I have now reinstalled the aircraft from scratch, problem persists 

It’s the opinion on discord the APU is broken beyond repair and you’ll need to create a new airframe.

[FYG001]

Allright, thanks for the help Pils, as always

 

[FYG001]

Sorry, even with a newly generated airframe, problem remains... 

 

The only way around is starting with non persistent state, C & D. Something appears to be saved with the persistent state that blocks the APU from starting? 

Edited February 16, 2023 by FYG001

[Pils]

35 minutes ago, FYG001 said:

The only way around is starting with non persistent state, C & D.

That’s no different from creating and using a new airframe though.