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Siemens Building Technologies Commissioning Guide CM1G5192en
HVAC Products 9 Error messages 26.02.2003
9 Error messages
9.1 Error code list
Error Cause Diagnosis and troubleshooting Res-
ponse
F0001
Overcurrent
Ø
Motor power (P0307) is greater than VSD
power (P0206)
Ø Motor lead short-circuit
Ø Earth faults
Check the following:
1. Motor power (P0307)
≤ VSD power (P0206)
2. Cable length limits must not be exceeded
3. Motor cable and motor must not have short-circuits
or earth faults
4. Motor parameters must match the motor in use
5. Value of stator resistance (P0350) must be correct
6. Motor must not be obstructed or overloaded
Increase ramp-up time
Reduce boost level
Off2
F0002
Overvoltage
Ø
DC link voltage (r0026) exceeds trip level
(P2172)
Ø Overvoltage can be caused either by too
high main supply voltage or if motor is in
regenerative mode
Ø Regenerative mode can be caused by fast
ramp downs or if the motor is driven from
an active load
Check the following:
1. Supply voltage must lie within the limits indicated
on the rating plate
2. DC link voltage controller must be enabled (P1240)
and parameterized correctly
3. Ramp-down time (P1121) must match the inertia of
load
4. Required breaking power must lie within the speci-
fied limits
Off2
F0003
Undervoltage
Ø
Mains supply failed
Ø Shock load outside the specified limits
Check the following:
1. Supply voltage must lie within the limits indicated
on the rating plate
2. Supply voltage must not be susceptible to tempo-
rary failures or voltage reductions outside tolerance
Off2
F0004
VSD overtem-
perature
Ø
Ventilation is inadequate
Ø Fan is inoperative
Ø Ambient temperature is too high.
Check the following:
3. Fan must turn when the VSD is running
4. Pulse frequency must be set to a lower value
5. Ambient temperature could be higher than specified
for the VSD
Off2
F0005
VSD I2T
Ø
VSD is overloaded
Ø Duty cycle is outside the tolerance
Ø Motor power (P0307) exceeds the VSD
power (P0206)
Check the following:
1. Load cycle must lie within the limits specified
2. Motor power (P0307)
≤ VSD power (P0206)
Off2
F0011
Motor overtem-
perature
Ø Motor is overloaded
Check the following: Make sure that the load duty
cycles (temporary overload) lie within the limits speci-
fied
Off1
F0012
VSD temperature
signal lost
Ø Wire breakage of the VSD temperature
sensor (heatsink)
Off2
F0015
Motor tempera-
ture
signal lost
Ø
Breakage or short-circuit of the motor
temperature sensor
If a signal loss is detected, temperature moni-
toring switches to monitoring the thermic
motor image.
Off2
F0020
1 phase for mains
supply missing
Ø
One of the 3 phases for the mains supply
voltage is missing
Check wiring of the 3 phases at the supply voltage
input of the VSD
Off2
F0021
Earth fault
Ø
Fault occurs if the sum of the phase cur-
rents is higher than 5 % of the nominal
VSD current
Note
This error message occurs on VSDs with 3
current sensors, i.e., for VSDs of frame sizes
D to F
Off2
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