Xylem Lowara Genyo plus - Specific Alarm Troubleshooting; Alarm A04: Frequent Start-ups; Alarm A05: Pressure Sensor Faulty; Alarm A11: Minimum Pressure

en - Original instructions
30 Genyo plus, Additional Installation, Operation and Maintenance Instructions
8.4 Alarm A04, start-ups too frequent
LED
Cause
Solution
Fast flashing
•
The motor starts up too
frequently
• Three consecutive start-ups in
a set period of time less than
that in parameter 2.1
Note:
• If parameter 2 = rc1, starting
of the pump unit is delayed
by 5 s
• If parameter 2 = rc2, the
pump unit stops
1. Replace the diaphragm tank
2. Check calibration of loading the diaphragm tank
3.
Edit the P START and/or P STOP pressure values
4.
If the booster set is configured, edit the difference in pressure
between P START and P STOP
8.5 Alarm A05, pressure sensor faulty
LED
Cause
Solution
Steady
Defective sensor
Contact Xylem or the Authorised Distributor
8.6 Alarm A11, minimum pressure
LED
Cause
Solution
Steady
Pressure below the minimum
threshold
Check setting of parameter 10
Slow flashing
Pressure below the minimum
threshold
ART function activated
No flow of water
Check the water level and pressure
Incorrect priming, there are air
bubbles in the suction pipe or in
the pump unit
Repeat the priming procedure, refer to the manual of the pump unit
Discharge pipe leaking
Eliminate the leaks
Incorrect working curve, flow rate
greater than the maximum
permitted flow rate
Decrease the flow rate
Pump unit faulty
Send the pump unit to an authorised workshop for testing
Motor (coil) faulty
Repair or replace the motor
8.7 Low pressure, booster set mode
Cause
Solution
An pump unit is not in operation
•
Check setting of parameter 5.1
• Send the pump unit to an authorised workshop for testing
•
Repair or replace the motor
Discharge pipe leaking
Eliminate the leaks
Incorrect priming, there are air bubbles in the pump unit
Repeat the priming procedure, refer to the manual of the pump unit