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Controls Training and Service Manual
072 COMP 2
OVERLOAD
Compressor 2 stopped
because of overload
Alarm no yes yes
(broken co
will remain
off)
079 UNIT
DISABLED
this message appears
after a critical alarm
(airflow, main fan
overload) and indicates
that the unit is operating
w/o humidifier or
electrical heaters.
Message - -
080 UNIT SHUT
DOWN
this message appears
after a critical alarm
(airflow, main fan
overload) and indicates
that the unit is shut down
due to the alarm.
Message - -
085 UNIT
SYNCHRONIS
ATION
a unit came back into the
network.
Message - - -
086 HUMIDIFIER
PROBLEM
humidifier
overtemperature or high
water level
Alarm no yes
088 DEHUM HRS
EXCEEDED
actual working hours of
dehumidification are
higher than the threshold
set.
Warning no no
089 FC HRS
EXCEEDED
actual working hours of
freecooling are higher
than the threshold set.
Warning no no -
091 COMP 1
PUMPDOWN
FAIL
Pump down of circuit 1
was not completed
(pressure value not
reached).
Alarm no yes yes
(broken co
will remain
off)
096 COMP 2
PUMPDOWN
FAIL
Pump down of circuit 2
was not completed
(pressure value not
reached).
Alarm no yes yes
(broken co
will remain
off)
097 DIG SCROLL1
HIGH TEMP
Digital Scroll compressor
#1 shut off because of
high temperature (sensor
is inside the
compressor).
Alarm no yes yes
(broken co
will remain
off)
96