Grundfos Alarm And Warning Codes - Grundfos CIU 300 Functional Profile And User Manual

11. Grundfos alarm and warning codes

This is a general Grundfos alarm and warning code list.
Code Description
1 Leakage current
2 Missing phase
3 External fault signal
4 Too many restarts
5 Regenerative braking
6 Mains fault
7 Too many hardware shutdowns
8 PWM switching frequency reduced
9 Phase sequence reversal
10 Communication fault, pump
11 Water-in-oil fault (motor oil)
Time for service
12
(general service information)
13 Moisture alarm, analog
Electronic DC-link protection
14
activated (ERP)
Communication fault, main system
15
(SCADA)
16 Other
Performance requirement cannot
17
be met
18 Commanded alarm standby (trip)
19 Diaphragm break (dosing pump)
20 Insulation resistance low
21 Too many starts per hour
22 Moisture switch alarm, digital
23 Smart trim gap alarm
24 Vibration
25 Setup conflict
Load continues even if the motor
26
has been switched off
External motor protector activated
27
(e.g. MP 204)
28 Battery low
Turbine operation (impellers forced
29
backwards)
Change bearings
30
(specific service information)
Change varistor(s) (specific service
31
information)
32 Overvoltage
Code Description
Gas in pump head, deaerating
35
problem
36 Discharge valve leakage
37 Suction valve leakage
38 Vent valve defective
40 Undervoltage
41 Undervoltage transient
42 Cut-in fault (dV/dt)
45 Voltage asymmetry
48 Overload
49 Overcurrent (i_line, i_dc, i_mo)
Motor protection function,
50
general shutdown (mpf)
51 Blocked motor/pump
52 Motor slip high
53 Kipped motor
Motor protection function,
54
3 sec. limit
Motor current protection activated
55
(MCP)
56 Underload
57 Dry running
58 Low flow
59 No flow
64 Overtemperature
Motor temperature 1
65
(t_m or t_mo or t_mo1)
Temperature, control electronics
66
(t_e)
Temperature too high, internal
67
frequency converter module (t_m)
External temperature/
68
water temperature (t_w)
Thermal relay 1 in motor
69
(e.g. Klixon)
Thermal relay 2 in motor
70
(e.g. thermistor)
Motor temperature 2
71
(Pt100, t_mo2)
72 Hardware fault, type 1
73 Hardware shutdown (HSD)
74 Internal supply voltage too high
75 Internal supply voltage too low
Code Description
76 Internal communication fault
Communication fault, twin-head
77
pump
78 Fault, speed plug
79 Functional fault, add-on module
80 Hardware fault, type 2
81 Verification error, data area (RAM)
Verification error, code area (ROM,
82
FLASH)
Verification error, FE parameter
83
area (EEPROM)
84 Memory access error
Verification error, BE parameter
85
area (EEPROM)
88 Sensor fault
89 Signal fault, (feedback) sensor 1
90 Signal fault, speed sensor
91 Signal fault, temperature 1 sensor
92 Calibration fault, (feedback) sensor
93 Signal fault, sensor 2
94 Limit exceeded, sensor 1
95 Limit exceeded, sensor 2
96 Setpoint signal outside range
97 Signal fault, setpoint input
Signal fault, input for setpoint
98
influence
Signal fault, input for analog
99
setpoint
104 Software shutdown
Electronic rectifier protection
105
activated (ERP)
Electronic inverter protection
106
activated (EIP)
110 Skew load, electrical asymmetry
111 Current asymmetry
112 Cos φ too high
113 Cos φ too low
Auxiliary winding fault
120
(single-phase motors)
Auxiliary winding current too high
121
(single-phase motors)
Auxiliary winding current too low
122
(single-phase motors)
23