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•
The product is unable to communicate with the IO module.
Cause
The connection to GENIbus is
missing.
The pump module is defective.
8.25 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.
The IO module is defective.
8.26 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.
9. Technical data
9.1 Electrical data
Supply voltage
24 VDC, - 10 %/+ 10 %.
Power supply is required to be class 2.
Check that the supply voltage corresponds to the values stated on
the nameplate.
Maximum power dissipation
Object
99347488
*
Excluding power to USB and CIM modules.
Maximum input power
Object
99347488
GENIbus terminal
- 7 to + 12 VDC.
Nominal current condition: 4 mADC.
Short-circuit current condition: 328 mA.
9.2 Mechanical data
Power supply terminals
24 V power supply.
IEC stranded or solid 0.75 to 1.5 mm
UL stranded or solid AWG 20 to 16.
Mount only copper wires in the terminals.
18
Remedy
•
Check the GENIbus
connection cable between CU
24X and IO 242.
•
Contact Grundfos.
Remedy
•
Check the GENIbus
connection cable between CU
24X and IO 241.
•
Contact Grundfos.
Remedy
•
Check for water leakage.
Maximum power dissipation
3.4 W *
Maximum input power
10 W
2
.
9.3 Temperature
Operating temperature
Minimum
-30 °C (-22 °F)
Maximum
+65 °C (+149 °F)
9.4 Environmental data
Enclosure class
IP54, 3R for CU 24X built into a panel of similar or higher enclosure
class.
Battery
Size BR2032.
Related information
7.2 Replacing the battery
9.5 Dimensions
52 (2")
187 (7.36")
10. Disposing of the product
This product or parts of it must be disposed of in an environmentally
sound way.
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest Grundfos company or
service workshop.
3. Dispose of the waste battery through the national collective
schemes. If in doubt, contact your local Grundfos company.
The crossed-out wheelie bin symbol on a product
means that it must be disposed of separately from
household waste. When a product marked with this
symbol reaches its end of life, take it to a collection
point designated by the local waste disposal authori-
ties. The separate collection and recycling of such
products will help protect the environment and human
health.
See also end-of-life information at
recycling.
www.grundfos.com/product-
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