-65-
No.PS
※※
-OMU0012-A
Problem
No.
Problem
Problem possible
causes
Investigation method
Countermeasures
13
Display
measurement
unit cannot be
changed.
Model selection
(model selected
does not have
units selection
function)
Check if the product number printed
on the product indicates units
selection function type.
Unit s selection function is
not available for fixed to SI
units type.
(kPa
MPa is available)
: The units selection function is
not for use in Japan due to a
new measurement law.
: Fixed to SI units: kPa, MPa
Product failure
Replace the product.
14
Buttons do not
work.
Key-lock mode is
activated
Check if the key-lock function is
turned on.
Check the key-lock function.
Product failure
Replace the product.
15
The operation is
unstable.
(chattering)
Effect of line
pressure
fluctuation
because
hysteresis is too
narrow or delay
time of the switch
is too short
(1) Check the set pressure values
(hysteresis)
(2) Check the delay time.
(1) Adjust the set pressure
value.
(2) Change the response
time setting.
Incorrect
wiring/broken
lead wire
(1) Check the power supply wiring.
(2) Check if there is bending stress
applied to any part of the lead
wire.
(bending radius, tensile force to
the lead wire)
(1) Check and correct the
wiring.
(2) Correct the wiring.
(Reduce the tensile force
or increase the bending
radius.)
Product failure
Replace the product.
