Technical data

Chapter 7 – Troubleshooting
Siemens Building Technologies, Inc. 61
Error Cause Diagnosis/Remedy Reaction
F0012, SED2
temperature
signal lost
• Wire breakage of the
SED2 temperature
sensor (heat sink).
Off2
F0015, Motor
temperature
signal lost
• Breakage or short-
circuit of the motor
temperature sensor.
• If a signal loss is
detected, temperature
monitoring switches to
monitoring the thermic
motor image.
Off2
F0020, 1 phase
for mains supply
missing
• One of the 3 phases for
the mains supply
voltage is missing.
Check the wiring of the 3 phases at
the supply voltage input of the SED2.
Off2
F0021, ground
fault
• The ground fault occurs
if the sum of the phase
currents is higher than
5% of the nominal
SED2 current.
NOTE: This error message
occurs on SED2 drives with three
current sensors; that is, for SED2
drives of frame sizes D to F.
Off2
F0022, Power
stack fault
The fault is caused by the
following events:
(1) dc link overcurrent =short
circuit of IGBT.
(2) short circuit of dc link chopper
(3) earth fault.
Frame sizes A to C = (1),(2),(3).
Frame sizes D to E = (1),(2).
Frame size F = (2).
Since all these faults are
assigned to one signal on the
power stack, it is not possible to
establish which one actually
occurred.
Off2
F0023, Fault at
SED2 output
• The On-phase is
interrupted at the SED2
output.
Off2