Symptoms And Diagnostics - Trane RTXC-XE Series Installation, Operation And Maintenance Manual

Symptoms and Diagnostics

RTXC-SVX003D-EN
Fault Code Fault Name
E22.03
Abnormal
motor auto-
tuning result
E22.04
Short circuit to
E23.00
ground
Motor phase-
E24.00 to-phase short
circuit
Accumulative
E26.00 running time
reached
Accumulative
E29.00 power-on time
reached
E30.00 Load loss
PID feedback
E31.00 lost during
running
Excessive
E42.00 speed
deviation
Motor over-
E43.00
speed
Motor
E45.00
overheats
Synchronous
control
E46.01
parameter
setting fault
E47.00 STO fault
Table 21. Symptoms and Diagnostics
No. Fault Description
There is no display at
1
power-on.
Cause
Synchronous motor back
EMF is not within the
permissible range after
auto-tuning.
Inertia auto-tuning is
faulty.
The motor is short
circuited to the ground.
Phase-to-phase short
circuit occurs on the
motor.
Accumulative running
time reaches the setting
value.
Accumulative power-on
time reaches the setting
value.
The output current of
the AC drive is smaller
than F9-64 (Load lost
detection level).
PID feedback is smaller
than the setting value of
FA-26 (Detection level of
PID feedback loss).
Motor auto-tuning is not
performed.
F9-69 (Detection level of
speed error) and F9-70
(Detection time of speed
error) are set
improperly.
Encoder parameters are
set improperly.
Motor auto-tuning is not
performed.
F9-67 (Over-speed
detection level) and F9-
68 (Over-speed
detection time) are set
improperly.
Cable connection of the
temperature sensor is
loose.
The motor temperature
is too high.
The setting of F9-57
(Motor overheat
protection threshold) is
too small.
More than two slave
types are set.
The STO card is faulty.
Cause
The mains voltage is not
Check the power supply.
input or is too low.
The switching power
supply on the drive
Check bus voltage.
board of the AC drive is
faulty.
The control board or
operating panel is faulty.
Contact the agent or Trane.
The rectifier module is
damaged.
Possible Solution
Ensure that F1-02 (Rated motor voltage)
is set according to the motor nameplate.
Before auto-tuning, ensure that the
motor has no load.
Ensure that F1-03 (Rated motor current)
is set according to the motor nameplate.
Replace the faulty cable or motor.
Check whether two-phase short circuit
occurs in three-phase (U, V, W) output.
Clear the record through parameter
initialization.
Clear the record through parameter
initialization.
Check whether the load is disconnected,
or the setting of F9-64 and F9-65 (Load
lost detection time) satisfies actual
running conditions.
Check PID feedback or set FA-26
properly.
Perform motor auto-tuning.
Set F9-69 and F9-70 properly based on
actual conditions.
Set encoder parameters properly.
Perform motor auto-tuning.
Set F9-67 and F9-68 properly based on
actual conditions.
Check cable connection of the
temperature sensor.
Increase carrier frequency or take other
measures to cool the motor.
Increase the setting of F9-57 (90° C to
100° C for common motors).
Check whether the slave option is
selected for A8-10, A8-50, and A8-70.
Check STO wiring.
Possible Solution
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