Wilo Yonos GIGA2.0-D, Installation And Operating Instructions Manual

Page: 194 / 424

en Faults, causes and remedies
194 WILO SE 2022-05
Code Fault Cause Remedy
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. Keep cooling
fins free of deposits.
406 Motor too hot. Permissible motor
temperature is ex-
ceeded. Ensure permissible ambi-
ent and fluid temperature.
Ensure motor cooling with
unobstructed air circula-
tion.
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 on causes and remedies:
The electronic module can be dismantled to check the contacts between
module and motor. Observe the safety instructions!
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 system function,
install swing check valves
if necessary.
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.
409 Incomplete software
update. The software update
was not completed. Software update with a
new software bundle is re-
quired.
Additional information about causes and remedy:
The pump can work only once the software update has been completed.
410 Voltage analogue input
overloaded. Voltage analogue in-
put short-circuited or
too heavily loaded. Check the cables and con-
sumers connected to the
analogue input power sup-
ply for short circuits.
Additional information about causes and remedy:
The fault impairs the binary inputs. EXT. OFF is set. The pump is stationary.
411 Mains phase missing
(only applies to 3~) No mains phase Check the electrical in-
stallation.
Additional information about causes and remedies:
Operation cannot be maintained. Possible causes:
1. Contact fault on mains connection terminal.
2. Fuse of a mains phase has tripped.
420 Motor or electronic
module defective. Motor or electronic
module defective. Replace motor and/or
electronic module.
Additional information about causes and remedy:
The pump cannot determine which of the two components is faulty. Contact
service.
421 Electronic module is de-
fective. Electronic module is
defective. Electronic module is de-
fective.
Additional information about causes and remedy:
Contact service.
Table 34: Error messages