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93
Sensor 2 signal outside signal range
Sensor 2 signal fault
1)
Same as fault 88.
Same as fault 88.
96
Setpoint signal outside signal range
Reference input signal fault
1)
Sensor signal type 4-20 mA: signal below 2 mA or
above 22 mA.
Sensor signal type 0-20 mA: signal above 22 mA.
Sensor signal type 0-10 V: signal above 11 V.
• Signal range set incorrectly.
• Correct the signal range setting.
• Setpoint signal incorrectly connected.
• Connect the setpoint signal correctly.
• Incorrect supply voltage to the setpoint.
• Check the supply voltage from the terminal box. If it is not 10 V,
replace the terminal box.
105
Overload
Electronic rectifier protection activated (ERP)
A
The electronic module/motor is heavily overloaded,
and the temperature of the electronics is above
100 °C.
The measured temperature can be read via PC Tool
E-products.
Cause:
• Temperature sensor defective.
• Contact Grundfos Service.
• Continued overload.
• Reduce the load.
• The ambient temperature is too high, or
the cooling is insufficient.
• Improve the cooling.
• Incorrect configuration of the terminal box.
• Contact Grundfos Service.
106
Overload
Electronic inverter protection activated (EIP)
A
The electronic module/motor is heavily overloaded,
and the temperature of the electronics is above
100 °C.
The measured temperature can be read via PC Tool
E-products.
Cause:
• Temperature sensor defective.
• Contact Grundfos Service.
• Continued overload.
• Reduce the load.
• The ambient temperature is too high, or
the cooling is insufficient.
• Improve the cooling.
• Incorrect configuration of the terminal box.
• Contact Grundfos Service.
148
DE bearing temperature high
Motor drive-end (DE) bearing temp. warning limit
Motor drive-end (DE) bearing temp. alarm limit
W
A
The drive-end motor bearing has become too hot.
Cause:
• The bearing is worn.
• Replace the bearing. See section
4.2 Replacement of motor bearings
.
• The motor is dirty.
• Check and clean, if necessary,
– the fan
– the motor cooling fins.
149
NDE bearing temperature high
Motor non-drive-end (NDE) bearing temp. warn. limit
Motor non-drive-end (NDE) bearing temp. alarm limit
W
A
The non-drive-end motor bearing has become too hot.
Cause:
• The bearing is worn.
• Replace the bearing. See section
4.2 Replacement of motor bearings
.
• The motor is dirty.
• Check and clean, if necessary,
– the fan
– the motor cooling fins.
155
Undervoltage
Inrush fault
A
The terminal box voltage is outside the alarm limit.
Cause:
• Fault in the voltage supply.
• Re-establish the voltage supply.
• Transients in the voltage supply during
operation.
• Contact Grundfos Service.
Fault code Fault reading in the R100
Fault reading in PC Tool E-products
Fault type
Explanation/cause
Remedy
