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Cause
Some smaller pumps have
PTC/Klixon sensors integrated
into the motor windings, but the
sensors have no connection out
of the pump. In case of
overheating, the sensors stop
the pump, and no current is
drawn.
8.12 Code 57 (Missing water in the application)
•
Alarm code 57 is shown on the display.
•
The alarm symbol on the display turns red and the pump stops.
•
Alarm code Dry run is displayed in Grundfos GO Remote.
Cause
Low water level in the pit and
the pump stops due to the dry-
running function.
8.13 Code 69 (Winding temperature too high)
•
Alarm code 69 is shown on the display.
•
The alarm symbol on the display turns red and the pump stops.
•
Alarm code Winding temperature too high is displayed in
Grundfos GO Remote.
Cause
The pump is clogged, causing
the pump to use more current
and thereby overheat.
The pump has run for too long. •
PTC input wiring and/or
sensors are incorrect.
Related information
6.15.1 Overheat protection
8.21 Code 181 (Signal fault, PTC input)
8.14 Code 72 (Internal fault)
•
Alarm code 72 is shown on the display.
Remedy
•
Make sure that the pump is
connected to the pump
terminals on the product.
•
Make sure that the pump
cable is not damaged.
•
Make sure that the pump
rating is within the specified
current or power rating of the
product.
•
Make sure that the pumps get
sufficient cooling and are not
blocked.
Remedy
•
Check and configure the
sensor stop level.
Remedy
•
Remove the blockage.
Allow the pump to cool down.
•
Adjust the distance between
start and stop levels.
•
Make sure that the two PTC
wires from the pump are
connected correctly to the
terminals on the product.
•
Make sure that the third PTC
wire is left unconnected if
present.
•
Make sure that the PTC wires
are undamaged.
•
Make sure that the PTC
sensors within the pumps are
undamaged.
•
Perform a test by
disconnecting the PTC wires
from the pump and shorting
PTC1 terminal A and B
and also PTC2 terminal A and
B, and verify that the error is
cleared.
•
Replace the product due to
the damaged PTC
circuit. Contact Grundfos.
•
The alarm symbol on the display turns red and the pump stops.
•
Alarm code Internal hardware fault is displayed in Grundfos
GO Remote.
Cause
Fault in internal hardware.
8.15 Code 76 (Internal fault)
•
Alarm code 76 is shown on the display.
•
The alarm symbol on the display turns red and the pump stops.
•
Alarm code Drive unit communication fault is displayed in
Grundfos GO Remote.
Cause
Internal communication fault.
8.16 Code 84 (Memory storage media faulty)
•
Warning code 84 is shown on the display if you press
the Up or Down button.
•
The warning symbol on the display turns yellow and the pump's
operating mode is unchanged.
•
Warning code Memory storage media faulty is displayed in
Grundfos GO Remote.
Cause
An error in the internal memory
has been detected.
8.17 Code 117 (Door opened)
•
Warning code 117 is shown on the display if you press
the Up or Down button.
•
The warning symbol on the display turns yellow and the
operating mode of the pump is unchanged.
•
Warning code Door opened is displayed in Grundfos GO
Remote.
Cause
The door to the control-unit
room has been opened.
8.18 Code 157 (Real-time clock monitoring)
•
Warning code 157 is shown on the display if you press the Up
or Down button.
•
The warning symbol on the display turns yellow, and the pump's
operating mode is unchanged.
•
Warning code Real-time clock out of order is displayed in
Grundfos GO Remote.
Cause
The battery for the real time
clock is missing or worn out so
the product is unable to
maintain time and date.
8.19 Code 159 (Communication error CIMxxx)
•
Warning code 159 is shown on the display if you press
the Up or Down button.
•
The warning symbol on the display turns yellow and the pump's
operating mode is unchanged.
•
Warning code Communication error CIMxxx is displayed in
Grundfos GO Remote.
•
The CIM module is unable to communicate with the product.
Cause
The CIM module is installed
incorrectly.
Remedy
•
Contact Grundfos or an
authorised service workshop.
Remedy
•
Contact Grundfos or an
authorised service workshop.
Remedy
•
Replace the control unit.
•
Contact Grundfos or an
authorised service workshop.
Remedy
•
Check the room with the
control unit.
Remedy
•
Replace the battery with a
new one.
Remedy
•
Ensure that the module,
including cables, is fitted
correctly.
21
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