LED Code Relays K1* Cause
Explanation
Reaction of Controller
Remedial measures
OFF
de-energized, 11 - 14
interrupted
Mains voltage failure
Line voltage available?
Unit switch OFF and automatically ON
when the voltage has been restored
ON
energized, 11 - 14
bridged
Normal operation without fault
1 x
energized, 11 - 14
bridged
No enable = OFF
Terminals “D1” - “10 V” (Digital In 1) not
bridged or switch off by Bus.
Switch-off
digital input or Bus
2 x
energized, 11 - 14
bridged
Temperature management active
The device has an active temperature man-
agement to protect it from damage due to
too high inside temperatures. In case of a
temperature rise above the fixed limits, the
modulation is reduced linearly. To prevent
the complete system being switched off ex-
ternally (in this operation permissible for the
controller) in case of reduced operation due
to too high an internal temperature, no fault
message is sent via the relay.
With a drop in temperature the modulation
rises again llinear.
Check installation of the device and cooling
of the controller.
3 x
de-energized, 11 - 14
interrupted
HALL-IC
Incorrect signal from the Hall-ICs, error in
the commutation.
Internal plug connection faulty.
The controller switches the motor off. Auto-
matic restart if no faults are recognised.
Replace fan / motor
5 x
de-energized, 11 - 14
interrupted
Motor blocked
If after 8 seconds of commutation no speed
is measured > 0, the fault “Motor blocked” is
released.
EC-Controller switches off, renewed attempt
to start after about 2.5 sec.
Final shutoff, when fourth starting test fails.
It is then necessary to have a reset by dis-
connecting the line voltage.
Check if motor is freely rotatable.
6 x
de-energized, 11 - 14
interrupted
IGBT Fault
Short circuit to earth or short circuit of the
motor winding.
EC-Controller switches off, renewed attempt
to start after about 60 sec.
Code 9.
Final shutoff, if - following a second starting
test – a second fault detection is detected
within a period of 60 seconds.
It is then necessary to have a reset by dis-
connecting the line voltage.
7 x
de-energized, 11 - 14
interrupted
Intermediate undervoltage
If the DC-link voltage drops below a speci-
fied limit the device will switch off.
If the DC-link voltage rises above the limit
within 75 seconds, then the cotroller will
attempt to start.
Should the DC-link voltage stay for more
than 75 seconds below the limit, the device
will switch off with a fault message.
Assembly instructions ECblue Diagnostics / Faults
L-BAL-F055D-GB 2021/51 Index 006 Part.-No.
43/56
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