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10
Diagnostics / Faults
Operating conditions are indicated by the status LED with
fl
ashing code.
30.01.2012
v_flash_explain1_7.VSD
3 x
2 x
ON
OFF
5 x
1 x
6 x
7 x
Code
LED
Relay
K1
Explanation
Reaction of Controller
Adjustment
OFF
de-energized
terminals 11 - 12 bridged
No line voltage
In the event of a mains interruption the
unit switches
“
OFF
”
and automatically
“
ON
”
when the voltage has been re-
stored.
Check line and internal controller fuse.
ON
energized
terminals 11 - 14 bridged
Normal operation without fault
1
energized
terminals 11 - 14 bridged
no enable
Terminals
“
D1
”
-
“
D1
”
(Digital In 1) not
bridged.
Switch OFF by external contact (
digi-
tal input).
2
de-energized
terminals 11 - 12 bridged
Motor fault
A connected thermostat or thermistor has
tripped the circuit / interruption between
both terminals
“
TB
”
.
The unit cuts out and does not switch on
again.
Check motor and connection then reset
(
Motor protection).
3
de-energized
terminals 11 - 12 bridged
Overload
Power semiconductor (heat sink) too hot.
Switch OFF at 95
°
C, switch ON when
cooled down to 65
°
C.
Check for any overloading of the device.
I.e. whether the maximum control current
occurring is above the rated current for
the device.
Check temperature in controller, Check
cooling of the controller.
4
energized
terminals 11 - 14 bridged
Sensor heat sink
Line interruption to the heat-sink sensor
(NTC).
The temperature monitoring of the power
semiconductor is not active any longer!
Check sensor line, if no adjustment possi-
ble replace the device!
5
de-energized
terminals 11 - 12 bridged
Line fault
Failure by a line phase unstable mains
supply.
Unit switches OFF and automatically ON
again during intact voltage supply.
check line supply and internal controller
fuse (so far available)
Operating Instructions
Dcontrol
–
model series PKDM6..80
Diagnostics / Faults
L-BAL-E143-GB 1914 Index 009
Part.-No.
30/40