9.17 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 error is displayed in Grundfos GO Remote.
• The pump module is unable to communicate with the product.
Cause The connection to GENIbus is missing.
Remedy • Check the GENIbus connection cable between CU 241 and IO 242.
Cause The pump module is defective.
Remedy • Contact Grundfos.
9.18 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 error is displayed in Grundfos GO Remote.
• The pump module is unable to communicate with the product.
Cause The connection to GENIbus is missing.
Remedy • Check the GENIbus connection cable between CU 241 and IO 242.
Cause The IO module is defective.
Remedy • Contact Grundfos.
9.19 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.
10. Technical 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
Maximum power dissipation
99347488 3.4 W
Enclosure class
IP54, 3R for CU 241 built into panel of similar or higher enclosure class.
GENIbus terminal
- 7 VDC to + 12 VDC.
Nominal current condition: 4 mADC.
Short-circuit current condition: 328 mA.
Dimensions
187 (7.36")
137 (5.4")
52 (2")
TM072339
Related information
8.4 Replacing the battery
27
English (GB)
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