
2015-01-07
Page 8/9
and the Operation LED lights up instead. (The
function test is usually initiated by the timer
every 48 hours)
F and G. DAMPER STATUS
The green and red LEDs indicate the normal
position/alarm position respectively for the
relevant damper. The normal position is open
for a ventilation damper and closed for an
evacuation damper.
The dampers are numbered 1 and 2.
Troubleshooting
The "ERROR" LED lights or flashes.
•Look at the pattern of flashing to identify
the error.
If the LED is constantly lit, there is a break in
the detector loop.
Check:
•The terminating resistor in the last detector
of the loop with the problem. It should be
2200 ohm, 0.6 W.
•If the input is not used, a resistor of 2200
ohm must be installed to replace the
detectors.
•Break in cable
•Loose contact in the detector bases.
•Check the connections to the detectors.
•Polarity!
Alternating short and long flashes to indicate a
service alarm (dirty smoke detector).
Check:
•For dirt on one or more detectors. Indicated
by a yellow LED on the affected detector if
the detector has a service alarm function.
Vacuum-clean or, in the worst case, replace
the detector head.
Rapid flashes if the 48-hour test fails.
Check:
•That the right number of dampers are
connected for the selected mode. If only
one damper is used, it must be connected to
DMP1 and jumper 4=ON
•That the dampers open and that the green
LED is normal.
•Carry out a manual function test and check
that the dampers operate within 2 seconds
if the MANF-VD24 is used. The red LED
lights up. The dampers must then return to
the normal position within 200 seconds and
the green LED lights up.
•That the dampers are correctly connected.
Correct actuator type is selected. Pay
particular attention to the connection to
terminal 1.
The "FIRE ALARM" LED lights up.
Check:
•That the EXT input is jumpered or closed
by an external control unit.
•For a short-circuit in one of the detector
loops.
•An alarm from a detector is indicated with
an LED on the detector.
The "SUM ALARM" LED lights up.
Check:
•For other alarms indicated by the LEDs.
•That no damper has operated incorrectly.
•That the dampers are correctly connected.
The dampers do not open.
Check:
•That there are no other alarms on the front
panel.
•That the damper motor is connected
correctly.
A manual reset is required after an automatic
function test.
The "fan lock" output has probably been
connected to the wrong input in the ventilation
system, which has locked itself as a result.
A manual reset is required after night mode.
Requires a night mode signal from ventilation
system to the KSUG.
Locking may occur if night mode is indicated
by the KSUG, which then sends a stop signal
to the system via the fan lock. This locking
may be bypassed by setting jumper 2. The fans
are still locked if a smoke detector is triggered
and during the function test.