Problem Solving - DAB ESY I/O Guide Rapide

3. PROBLEM SOLVING

Before starting to look for faults due to the wiring it is necessary to disconnect the power supply to the pump (take the plug
out of the socket).
Below is a list of possible problems:
Problem
Power led off
Error Insufficient supply voltage
Pressure sensor error
Green pressure sensor led not active
Modbus communication not working
ENGLISH
Problem description
No power supply
Board power supply voltage not sufficient
Pressure sensor out of range
Although the pressure sensor is connected,
the led does not work
Modbus communication not working
24
Possible solution
Check power supply wiring
Check for short circuits due to incorrect
wiring
Check for overloads due to incorrect wiring
of sensors, inputs and outputs
Check that the pressure sensor connection
is correct (PR1 connector)
Make sure the pressure sensor is enabled
(proceed via APP)
If Modbus LED is GREEN:
1) Check that Modbus is enabled,
via APP (Modbus
parameter = enabled)
2) Check that Modbus parameters
are correct (Baud rate, parity, stop
bits, ID), via APP
3) Check RS485 wiring
If Modbus LED is RED:
1) Make sure
communication
pump/group and ESY I/O is
active.
Mode
that wireless
between