Code 159 (Communication Error Cimxxx); Code 165 (Signal Fault); Code 181 (Signal Fault, Ptc Input); Code 191 (High Water Level) - Grundfos LC 241 Instrucciones

• 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.
Remedy
• Replace the battery with a new one.

8.14 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
• Ensure that the module, including cables, is fitted correctly.
Cause
The CIM module is defective.
Remedy
• Contact Grundfos.
Related information
2.2.2 Installing a communication interface module

8.15 Code 165 (Signal fault)

• Alarm code 165 is shown on the display.
• The alarm symbol on the display turns red and the pump stops.
• Alarm code Signal fault is displayed in Grundfos GO Remote.
Cause
The signal from the sensor is out of the configured range.
Remedy
• Go to Settings > Level control in Grundfos GO Remote and
ensure that the configured range corresponds to the physical
application type.
• Change the sensor, if needed.
Related information
6.6.1 Setting the after-run delay, high level

8.16 Code 181 (Signal fault, PTC input)

• Alarm code 181 is shown on the display.
• The alarm symbol on the display turns red and the pump stops.
• Alarm code Signal fault, PTC input is displayed in Grundfos
GO Remote.
Cause
There is a signal fault in the PTC input.
Remedy
• 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 damaged PTC circuit. Contact
Grundfos.
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Related information
2.3.3 Connecting the pump supply and power supply

8.17 Code 191 (High water level)

• Alarm code 191 is shown on the display.
• The alarm symbol on the display turns red, but the pump's
operating mode is unchanged.
• Alarm code High water level is displayed in Grundfos GO
Remote.
Cause
The defined start level did not start the pump.
Remedy
• Check and configure the sensor start level.
Cause
The pump is not big enough to remove the water.
Remedy
• Contact Grundfos or an authorised service workshop.
Cause
The level sensor is defective and not reacting on level changes.
Remedy
• Check the functionality of the level sensor.
Related information
3.6 Configuring the IO terminals using Grundfos GO Remote

8.18 Code 205 (Level switch inconsistency)

• Alarm code 205 is shown on the display.
• 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
6.6.1 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.