EP Equipment 508000003143, Operation Manual

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Error
Error text
183
EVP2 DRIV.
SHORT
1- The EVP2 driver is shorted.
2- The microcontroller detects a
mismatch between the valve
set-point and the feedback of the
EVP2 output.
1- Check if there is a short circuit
or a low-impedance conduction
path between the negative of the
coil and -B.
2- Collect information about:
o the voltage applied across the
EVP2 coil,
o the current in the coil,
o features of the coil.
Ask for assistance to EP in order
to verify that the software
diagnoses are
in accordance with the type of coil
employed.
3- If the problem is not solved, it
could be necessary to replace the
controller.
184
EVP2 DRIVER
OPEN
The EVP2 driver is not able to drive
the EVP2 coil. The device itself or
its driving circuit is damaged. This fault is not related to external
components. Replace the logic
board.
186
WAIT MOT.P
STILL
If DC Pump option is set to ON, the
software expects the voltage on -P
output to be at a “steady state”
value, before switching the LC on. If
the voltage is different, it could be
due to the fact that the motor
connected to -P is not still. For this
reason, the software waits 30
seconds for the voltage to be at the
“steady state” value (and for the
pump motor to be still). After this
time, the software assumes that the
problem is not due to the fact that
the pump motor is not still, and
show the PUMP VMN NOT OK
alarm.
1- If the motor connected to -P is
still moving, just wait for it to be
still.
2- If not, in 30 seconds the alarm
PUMP VMN NOT OK will appear.
Error Message Possible cause Fault elimination