Air Suspension Will Not Inflate

[crissrace]

This morning I had an appointment to have my coach worked on.
Temperature here this AM was 30 degrees. Coach started fine--up came
the air pressure so I hit the "UP" button on the dash and nothing
happened. This is a first! Traced the air lines on the diagram and
the air throttle shares the air source directly with the air supply for
the front and rear air rear bags. Air throttle works fine. Checked
the dash switch and it is operating and has 12V. Since the front and
rar air bags have separate lines what is the chance they are both
frozen? Water in the coach is not frozen. I am scratching my head
here so can anyone help? Coach does not have automatic leveling. By
the way it is 45 degrees at 10:41AM.

Bob Criss
Pittsburgh
1990SP36