Mec 4069RT Service And Parts Manual page 71

There is not enough difference between the initial pressure peak and the minimum pres-
sure.
Check for proper weight in the platform and check pressure sensor and lift cylinder
hydraulics.
F40:REJECT DELTA
This message indicates that there is not enough difference between the loaded & empty
pressure.
This message could occur if the platform were not properly loaded during the STATIC
LOADED phase, or if the platform were not properly empty during the STATIC EMPTY
phase.
This message could also occur if the wrong pressure sensor was fitted (e.g.: a 5000psi
sensor when a 3000psi one is needed).
Check CALIBRATIONS / HEIGHT CALS; the "Height" indicates the first height at which
there was insufficient difference and the "Up" and "Down" values show the loaded pres-
sure (first) and the difference between loaded and empty pressure (second).
F42:LOW PRESSURE
This message indicates that the pressure is too low (0.5V or less) when the elevation
switch opens during the DYNAMIC lift.
This message would occur if the pressure sensor was disconnected, or if there were some
other wiring error.
Check DIAGNOSTICS / SENSORS to check the pressure.
F43:HIGH PRESSURE
This message indicates that the pressure is too high (4.5V or more) when the elevation
switch opens during the DYNAMIC lift.
This message would occur if the wrong pressure sensor was fitted, or if there were some
other wiring error.
Check DIAGNOSTICS / SENSORS to check the pressure.
F44:LOW PRESSURE
This message indicates that the pressure is too low (0.5V or less) at a STATIC measure-
ment point.
This message would occur if the pressure sensor was disconnected, or if there were some
other wiring error.
Check DIAGNOSTICS / SENSORS to check the pressure.
F45:HIGH PRESSURE
This message indicates that the pressure is too high (4.5V or more) at a STATIC measure-
ment point.
This message would occur if the wrong pressure sensor was fitted, or if there were some
other wiring error.
Check DIAGNOSTICS / SENSORS to check the pressure.
F46:CHECK ELEV
This message indicates that the elevation switch opened more than once during the
DYNAMIC lift.
F47:CHECK ELEV
This message indicates that the elevation switch closed more than once during the
DYNAMIC lower.
G P4 0 0 C
"4069RT" Service and Parts Manual
M S
O N T R O L O D U L E E T U P
C P
A L I B R A T I O N R O B L E M S
March 2014
Page 2-27