Troubleshooting; Alarm Signals - Lowara TKS Serie Instrucciones De Uso E Instalación

8. Troubleshooting

Read this user's manual and the operating instructions for the electric pump and diaphragm tank
(if installed).
Maintenance operations must be performed by qualified personnel only.
For further information refer to chapters 7 and 12.
8.1 Visual Signaling Devices
8.1.1 Operation Signals
These basic signals are integrated by the alarm signals. Therefore there could be combinations of si-
gnals such as green light on (power), yellow light off (pump off) and flashing red light (alarm).

8.1.2 Alarm signals

If an alarm is triggered the red light flashes more or less rapidly (flashing – pause – flashing) depending
on the cause of the system shutdown.
Red light (alarm) Off
Red light (alarm) Flashing
Red light (alarm) Flashing
Red light (alarm) Flashing
Red light (alarm) Flashing
Red light (alarm) Flashing
Red light (alarm) Flashing
Red light (alarm) Flashing
Be careful when servicing the system as it could restart automatically.
Shutdown caused by lack of water on suction side
If the system shuts down because there is not enough water on the suction side, it will restart automati-
cally only if the external device re-enables its operation (float switch or pressure switch or switch
ters 6.2.7 and 6.2.8).
Shutdown caused by other problems except for lack of water on suction side
In all these cases the system restarts automatically after 20 seconds. If the cause of the malfunction per-
sists, the system will shut down definitively after three attempts to start.
Information for users and maintenance personnel
TKS_M0025_A_OT.XLS
No malfunction
Overcurrent shutdown
Converter overtemperature
shutdown
Motor overtemperature
shutdown
Shutdown caused by lack of
water on suction side
Or shutdown caused by open
external switch contact
No signal from transmitter
shutdown
Low voltage (undervoltage)
shutdown
Problems at serial output (for 2-
pump units)
x 2
x 2
x 3
x 3
x 4
x 4
x 5
x 5
x 6
x 6
x 7
x 7
x 8
x 8
TKS_M0026_A_OT.XLS
en
chap-
27