EBARA HERTZ ONE Manual página 29

9.3 ALARM CODES TABLE DISPLAYED BY HERTZ ONE.
When the system goes into alarm the red indicator light, to the left of the display, is turned on, is switched the external relays and
into the page P00.0 appear cyclically all alarms present.
Depending on the type of alarm is then activated other indications that are shown in the table.
DISPLAY DESCRIPTION
For at least one motor
the hours of
AL 1
maintenance are
exceeded.
It 'was set an incorrect
AL 2
value.
The transducer is
AL 4 disconnected or not
connected correctly.
The motor of the pump
ALA8
(A8 pump 1,
B8 pump 2,
ALb8
C8 pump 3) is
absorbing in an unusual
ALC8
way.
The inverter module is
AL16
in protection.
The plant has exceeded
AL32 the maximum pressure
setting.
It's been a lack of
AL64
water.
No written of
the warning
and Led Exceeded the threshold
STANDBY set as the start control.
pumps
flashing
If is active one alarm which allows the operation of pumps directed by the network (AL2, AL4 and AL16) verify the
efficiency of the expansion vessels.
OTHER DEFECTS
DISPLAY DESCRIPTION
No power to control
Display off.
part of the system.
ENGLISH
EFFECT ON THE
SYSTEM
No limitation of Do the maintenance and reset the hours of operation.
the operation. Reference parameters nAn1, nAn2, nAn3 and TnAm.
Enable only the
Verify that the Pset is less than the Pn and Pn is less than that of PFS.
logic switches if
Reference parameters PFS, Pn and Pset.
present.
Enable only the
If is the first time that you connect it, try to reverse the wires, otherwise check if it is
logic switches if
damaged.
present.
Checks to be performed:
- Rated current set, parameters A, b, or C;
- Absorption of the motor;
The pump showing
- Fuse FU2;
the anomaly is
- Pump connection that has the anomaly.
forced to stop.
Reset:
- Blinking indication: resetting the system after one minute;
- Fixed indication: turn off the system to reset the alarm.
Checks to be performed:
- The input supply voltage there is not less than 170V a.c. at load;
- The pump is not mechanically locked;
The pumps under
- Fuse FU1;
line are driven by
- the connection of the pump that is controlled under inverter.
transducer.
Reset:
- Blinking indication: resetting the system after 1 minute;
- Fixed indication: turn off the system to reset the alarm.
Check the setting of the parameter PPER or the behavior of the system after reset.
Pumps stopped
Restart automatically after 10 seconds at the return of the pressure below the threshold.
Checks to be performed:
- Continuous presence of the water on the suction group, also with the system is active;
- The threshold set in the parameter PH2O;
Pumps stopped - If the parameter SIn is configured to float in the input to terminals 4-5.
Reset:
- Blinking indication: resetting the system after 15 minutes;
- Fixed indication: turn off the system to reset the alarm or reset the float if the SIn is set to 1.
-Verify the efficiency of vessels or expansion of the threshold set in the parameter A A.
No limitation of
the operation. -The indication is reset automatically when the starts back below the threshold, or if you set
the threshold at 0.
ATTENTION:
EFFECT ON THE
SYSTEM
Pumps stopped - Check the fuse FU4.
INTERVENTION
INTERVENTION
28