30
YT-3400/3450 series
FULL_CL
Time elapsed for valve to fully close.
VM NOR
Type of valve stroke on LCD. (in percentage or in value)
Erro
Error code or warning message.
ABS
Absolute resistance value.
7. Error and Warning Code
7.1
Error code
Error Code
Code Description and Cause
Action
MT ERR L
Positioner is improperly installed.
Positioner is not parallel to the
ground at 50% point. Lever is at
lower position than actual 50% point.
Re-install the positioner.
Ensure the feedback lever does
not touch the lever stopper at 0%
and 100%.
MT ERR H
Positioner is improperly installed.
Positioner is not parallel to the
ground at 50% point. Lever is at
higher position than actual 50%
point.
Re-install the positioner.
Ensure the feedback leer does
not touch the lever stopper at 0%
and 100%.
CHK AIR
Valve does not operate when
positioner receive “Full Open” signal
during the auto calibration.
Check supply pressure level.
RNG ERR
Operating angle is too small due to
improper positioner installation.
Adjust bracket so the positioner
can be mounted closer to
actuator.
C
Error of 10% or more persists more than 1
minute.
No valve movement.
High level of valve friction
Changes in setting pressure of actuator.
Perform BIAS calibration.
Check setting pressure of actuator.
D
I-value reaches at maximum or minimum
limit.
Changes in valve friction.
Changes in setting pressure of actuator.
Perform auto calibration.
Check setting pressure of actuator.
