Wilo Stratos GIGA2.0-I Notice De Montage Et De Mise En Service page 248

en
248
Faults, causes and remedies
If an error message is output, the display is permanently on and the green LED indicator
is off.
Code Fault
401 Unstable power supply
Additional information about causes and remedy:
Power supply too unstable.
Operation cannot be maintained.
402 Undervoltage
Additional information about causes and remedy:
Operation cannot be maintained. Possible causes
1. Mains overloaded
2. Pump is connected to the wrong power supply
3. Three-phase power supply is unsymmetrically loaded by
unevenly connected single-phase consumers.
403 Overvoltage
Additional information about causes and remedy:
Operation cannot be maintained. Possible causes:
1. Pump is connected to the wrong power supply
2. Three-phase power supply is unsymmetrically loaded by
unevenly connected single-phase consumers.
404 Pump blocked.
Additional information about causes and remedy:
In addition to deposits and foreign bodies in the system, the pump shaft can
also be tilted and blocked by heavy bearing wear.
405 Electronic module too
hot.
Additional information about causes and remedy:
Adhere to permissible installation position and minimum distance from insu-
lation and system components to ensure sufficient ventilation.
406 Motor too hot.
Additional information about causes and remedy:
Adhere to permissible installation position and minimum distance from insu-
lation and system components to ensure sufficient ventilation.
407 Connection between
motor and module in-
terrupted.
Additional information about causes and remedy:
Dismantle the control module to check the contacts between module and
motor.
408 There is flow through
the pump in the oppos-
ite direction of flow.
Additional information about causes and remedy:
If flow passing through pump in the opposite direction is too strong, the mo-
tor can no longer start.
Cause Remedy
Unstable power sup- Check power supply.
ply.
Power supply is too Check power supply.
low.
Power supply is too Check power supply.
high.
Mechanical influence Check free movement of
is inhibiting the rota- rotating parts in the pump
tion of the pump head and motor.
shaft. Remove deposits and for-
eign substances.
Permissible temper- Ensure permissible ambi-
ature of the elec- ent temperature.
tronic module is ex- Improve room ventilation.
ceeded.
Permissible motor Ensure permissible ambi-
temperature is ex- ent and fluid temperature.
ceeded. Guarantee motor cooling
with unobstructed air cir-
culation.
Electrical connection Check the motor module
between motor and connection.
module faulty.
External influences Check power control of the
cause flow against pumps,
the direction of the install swing check valve if
pump's flow. needed.
WILO SE 2021-12