Code 225 (Communication Error Pump Module); Code 226 (Communication Error Io Module); Code 229 (Water On Floor); Technical Data - Grundfos LC 241 Installation And Operating Instructions Manual

• The alarm symbol on the display turns red and the pump
stops.
• Alarm code Level switch inconsistency is displayed in
Grundfos GO Remote.
Cause
A float switch could be defective or stuck.
Remedy
• Check the functionality of each float switch.
Related information
3.6 Configuring the IO terminals using Grundfos GO Remote
6.5.3.1 Setting the after-run delay, high level

8.19 Code 225 (Communication error pump module)

• Alarm code 225 is shown on the display.
• The alarm symbol on the display turns red and the pump
stops.
• Alarm code Communication fault, pump module is displayed
in Grundfos GO Remote.
• The product is unable to communicate with the IO module.
Cause
The connection to GENIbus is missing.
Remedy
• Check the GENIbus connection cable between CU 24X and
IO 242.
Cause
The pump module is defective.
Remedy
• Contact Grundfos.

8.20 Code 226 (Communication error IO module)

• Alarm code 226 is shown on the display.
• The alarm symbol on the display turns red and the pump
stops.
• Alarm code Communication fault, I/O module is displayed in
Grundfos GO Remote.
• The product is unable to communicate with the IO module.
Cause
The connection to GENIbus is missing.
Remedy
• Check the GENIbus connection cable between CU 24X and
IO 241.
Cause
The IO module is defective.
Remedy
• Contact Grundfos.

8.21 Code 229 (Water on floor)

• Warning code 229 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 Water on floor is displayed in Grundfos GO
Remote.
Cause
The sensor detects water on the floor.
Remedy
• Check for water leakage.

9. Technical data

Supply voltage
Ratings
Rated voltage [Un]
Ratings
Rated current
Current
Rated current [InA]
Rated current of a circuit [Inc]
Rated conditional short-circuit
current [Icc]
Rated frequency
Frequency
Rated frequency
Maximum number of pump starts and stops per hour
250.
Relay output, REL 3, REL 4
250 VAC nominal and 24 VDC nominal, mixed use.
Nominal current: 10 mA - 2 A AC/DC.
PTC terminals
Performance level C, category 1, according to ISO 13849.
Trip resistance: greater than 2.2 kΩ ± 5 %.
Automatic reset resistance: less than 1 kΩ ± 5 %.
Digital input
Digital input mode
Analog, digital input
All analog signals have an out-of-range alarm.
Voltage
Current
Temperature
Digital input mode
Enclosure class
IP54.
EMC classification
Environment B.
Weight
See nameplate.
Material
Metal only.
Value
See nameplate.
Overvoltage, category III
Value
See nameplate.
Rated current value divided by
the number of circuits.
10 kA
Value
50/60 Hz
Low logic level below 1.8 V.
High logic level higher than 2.7
V.
0 - 10 V
0 - 5 V
0 - 3.5 V
0 - 20 mA
4 - 20 mA
Pt100 2-wire.
Pt1000 2-wire.
Measurement range: -30
to +180 °C.
Low logic level below 1.8 V.
High logic level higher than 2.7
V.
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