7
Diagnostics / Faults
Operating conditions are indicated by the status LED with
fl
ashing code.
04.01.2012
v_flash_explain1_8.VSD
3 x
2 x
ON
OFF
5 x
1 x
7 x
8 x
Code
Relay
K2
Explanation
Reaction of Controller
Adjustment
OFF
de-energized
terminals 21 - 22 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 voltage and pre-fusing.
ON
Energized at modulation
above 5 Hz (terminals 21 -
24 bridged).
De-energized at modula-
tion below 3 Hz (21 - 22
bridged).
Normal operation without fault
1
de-energized, 21 - 22
bridged
No enable = OFF
Terminals
“
D1
”
-
“
D1
”
(Digital In 1) not
bridged.
Switch off by external contact (
enable,
device ON / OFF).
2
de-energized
terminals 21 - 22 bridged
Motor fault
Tripping of connected thermostat or
break between terminals
“
TB
”
.
The unit cuts out and does not switch on
again.
Check motor and connection then reset
(
Motor protection).
3
Energized at modulation
above 5 Hz (terminals 21 -
24 bridged).
De-energized at modula-
tion below 3 Hz (21 - 22
bridged).
Temperature management active
The device has an active temperature
management to protect it from damage
due to too high inside temperatures. In
case of a temperature rise above the
fi
xed limits, the modulation is reduced lin-
early. To prevent the complete system
being switched off externally (in this oper-
ation 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 modula-
tion rises again llinear.
Check cooling of the controller
5
de-energized
terminals 21 - 22 bridged
Overcurrent
The controller was switched off by the
current limitation.
Delay: 1.25 sec by continous overcurren-
t.Immediately switch of after 16th short (<
1.25s) overcurrent.
If for 60seconds no short fault the fault
counter goes back to 0 .Switch back time:
60 sec.
Controller turns the motor off. There is a
renewed attempt to start after about one
minute.
Check motor
Operating Instructions
FRQ5S-E-6/10A
Diagnostics / Faults
L-BAL-E247-GB 1512 Index 001
Part.-No. 00163444-42
13/17
