Actions with operating disturbances
81
FIGHTER 1330
Phase sequence alarm
This text is displayed when the hot gas temperature
has not increased 10 °C within 30 seconds after com-
pressor start.
This is only checked at the first start-up.
This may be due to:
■ The compressor rotates in the wrong direction due
to incorrect phase sequence. Swap the two incom-
ing phases at the terminal X9.
■ Fuse F3 has blown on the base card (29).
The alarm resets when the fault is corrected and the
unit is restarted..
SensfaltWw-in
This text is shown when a fault on the incoming heat-
ing medium sensor (VBRA or VBRB) has been regis-
tered.
This may be due to:
■ Defective sensor.
■ Broken sensor cable.
The alarm is reset once the fault has been rectified
and the unit has been restarted or the alarm has been
acknowledged in menu 5.4.11 (Reset alarm).
SensfaltBriou
This text is shown when a fault on the outgoing brine
sensor (KButA or KButB) has been registered.
This may be due to:
■ Defective sensor.
■ Broken sensor cable.
The alarm is reset once the fault has been rectified
and the unit has been restarted or the alarm has been
acknowledged in menu 5.4.11 (Reset alarm).
Sensfalt HG
This text is shown when a fault on the hot gas sensor
(HGA or HGB) has been registered.
This may be due to:
■ Defective sensor.
■ Broken sensor cable.
The alarm is reset once the fault has been rectified
and the unit has been restarted or the alarm has been
acknowledged in menu 5.4.11 (Reset alarm).
HP-Alarm
When this alarm is shown the high pressure presso-
stat has tripped.
This may be due to:
■ No or too low flow on the heating medium side,
check VBP-A and VBP-B.
■ Too high stop temperature for hot water charging,
check menu 1.2.
■ Too high return temperature set in menu 5.4.1.
The alarm is reset once the fault has been rectified
and the unit has been restarted or the alarm has been
acknowledged in menu 5.4.11 (Reset alarm).
LP-alarm
When this alarm is shown the low pressure pressostat
has tripped.
This may be due to:
■ Bad circulation in collector system due to inferior
venting/low pressure or ice (if ice has formed the
brine pump (35) will be warm).
■ Brine pump (35) malfunction
■ Iced evaporator due to too low antifreeze concentra-
tion.
■ Leakage in the brine circuit.
The alarm is reset once the fault has been rectified
and the unit has been restarted or the alarm has been
acknowledged in menu 5.4.11 (Reset alarm).
MS-alarm
Shown when the motor cut-out on compressor A/B or
the brine pump has tripped.
This may be due to:
■ Phase failure due to tripped fuse.
■ Motor cut-out set incorrectly.
The alarm is reset once the fault has been rectified
and the unit has been restarted or the alarm has been
acknowledged in menu 5.4.11 (Reset alarm).
Lev.sens.alarm
Shows that the level, pressure or flow in the collector
circuit is low. The brine pump stops.
This may be due to:
■ Leakage in the brine circuit.
The alarm is reset once the fault has been rectified
and the unit has been restarted or the alarm has been
acknowledged in menu 5.4.11 (Reset alarm).
Constant alarm
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