29
VASCO Solar
’s address in parallel operation.
x
01 --> 07: VASCO Solar slaves
2.
Press STOP (red button).
3.
In the
advanced parameters
verify that
Autorestart
is set
ON.
4.
Press STOP (red button).
5.
Press STOP again.
Whenever the user accesses the Menu screen of the VASCO Solar master, the communication between VASCO Solars is
automatically interrupted.
In case of alarm or failure of a pump in a Combo system, this pump’s operation will be replaced (
temporary or
permanently) by another pump.
In case of failure of master in a Combo system, it will be replaced by the next slave after about 1 minute. In order to
enable master replacement Autorestart must be set ON in each slaves.
11. Trouble-shooting chart
LCD does not switch on after powering
the VASCO Solar
x
Check the connecting flat cable between the LCD board (attached to the
cover) and the control board
x
Check the fuses
x
Check that the power cables are properly connected.
Power line of VASCO Solar is interrupted
by the differential protection contactor
x
Check the leakage current to ground of EMC filter
x
Following a rapid off/on the power supply, the differential contactor can
interrupt the power. After turning off the VASCO Solar it is
recommended to wait at least 1 minute before restarting.
When performing sensor test operation,
SENSOR OFF alarm occurs
x
Check that the sensor cable is properly connected to the sensor device
and to the VASCO Solar.
x
Make sure that the sensor and its cable are not damaged.
x
Check that the operating range of sensor is of 4 -20 mA type and the
value of 15 V is within the voltage feed range of the sensor.
Frequency and pressure oscillation on
constant pressure control mode
x
Check if the water tank and its air pressure are correctly set. It may be
necessary to increase the tank volume or reduce the pre-charge
pressure.
x
Check the ki & kp parameters (Installer Parameters menu). At first, it is
suggestable to increase the Ki value. If it not enough reduce of one unit
the Kp value.
DOL pump stops and starts continuously
x
Increase
delta control.
x
Check to see if the water tank and it’s
air pressure are correctly set. It
may be necessary to increase the tank volume or reduce the pre-charge
pressure.
Measured pressure drops too much
before VASCO Solar starts the pump.
x
Decrease the delta start value (Installer Parameters menu) .
x
Check to
see if the water tank and it’s air pressure are correctly set. It
may be necessary to increase the tank volume or reduce the pre-charge
pressure.
x
Modify the value of ki & kp parameters (Installer Parameters menu).
At first, it is suggestable to reduce the Ki value. If it is not enough
increase of one unit the Kp value.
Address
XX
