Wilo Stratos GIGA2.0-D, Инструкция по установке и эксплуатации

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en Faults, causes and remedies
248 WILO SE 2021-12
If an error message is output, the display is permanently on and the green LED indicator
is off.
Code Fault Cause Remedy
401 Unstable power supply Unstable power sup-
ply. Check power supply.
Additional information about causes and remedy:
Power supply too unstable.
Operation cannot be maintained.
402 Undervoltage Power supply is too
low. Check power supply.
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 Power supply is too
high. Check power supply.
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. Mechanical influence
is inhibiting the rota-
tion of the pump
shaft. Check free movement of
rotating parts in the pump
head and motor.
Remove deposits and for-
eign substances.
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. Permissible temper-
ature of the elec-
tronic module is ex-
ceeded. Ensure permissible ambi-
ent temperature.
Improve room ventilation.
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. Permissible motor
temperature is ex-
ceeded. Ensure permissible ambi-
ent and fluid temperature.
Guarantee motor cooling
with unobstructed air cir-
culation.
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. Electrical connection
between motor and
module faulty. Check the motor module
connection.
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. External influences
cause flow against
the direction of the
pump’s flow. Check power control of the
pumps,
install swing check valve if
needed.
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.