Virginia Controls, LLC
MH-3000 User Manual, 1_03C10-VC
Page 113
Q. Why is the Fire Buzzer output On but the car is not
on Fire Service?
Switch 3 on the CPU Slide Switch S2 is in the ON position.
This switch disables the Redundancy Faults. This may be useful during initial installation,
and the Fire Buzzer is turned on to remind you to turn off this feature after installation.
Slide the switch down to enable Redundancy Faults.
Q. How can I get the latest version of the Manual?
The latest version of this Manual is available online at
. Go to the
“Support” section, and download the MH
-3000 manual in pdf format.
Q. Do I need schematics (or prints) to work on the
controls?
Each control system built by Virginia Controls is custom designed for each installation.
Though there are some strong similarities between similar jobs, it is strongly recommended
that you have accurate prints/schematics before working on any of our control systems.
We require the job number for any installation before we can offer practical help with any
problems on that installation, so that we can refer to the actual prints for that job.
It is the responsibility of each technician to work safely on the equipment. Having and
using the schematics is a key requirement in being able to do that. The technician should be
able to follow any instructions given by factory personnel, and verify that instructions were
properly understood, and that they will not cause an unsafe condition for the technician or
other personnel.
Especially be careful when adding jumpers, since a jumper placed in the wrong position
could cause damage to the controller and danger for personnel.