Honeywell IRU fault

 

#1 position ONLY, with new HG2001GD40 gives a fault AFTER  ” ON BATT”.

OLD HG2001GC02 will run fine.

 

IMT on the GD40 IN #1position  is “DATA INVALID”.

Other 2 units are disgustingly normal.

 

https://youtube.com/shorts/pxopz7Y77Fs?feature=share

 

 

 

 

#1 parity pin 4c set to ground.  All good now

 

https://youtube.com/shorts/2Hezva5NJ3I?feature=share

 

Little difference between units.