SPL User Manual Page 19 of 24
0412-6180864-rev.00
Error description
Action
Problem description
Troubleshooting
Reset type
LOW ROOM
TEMPERATURE
Display only
the system failed to modify the room
temperature after a set time
Check if any other
alarms are present or
contact the service
centre
Manual
HIGH ROOM
TEMPERATURE
Display only
the system failed to modify the room
temperature after a set time
Check if any other
alarms are present or
contact the service
centre
Manual
ANTI-FREEZE
Blocks the cold
refrigerant circuit and
starts the utilities
Possible freezing of water coil
Contact the Service
centre
Delimited
on the
event
CIRCUIT # PROBE HIGH
PRESSURE
Blocks the refrigerant
circuit
Contact the Service
centre
Manual
HIGH PRESS. DIGITAL
CIRCUIT #
Blocks the refrigerant
circuit
Contact the Service
centre
Manual
CIRCUIT # LOW
PRESSURE
Blocks the refrigerant
circuit after a set
number
activations/hour
Circuit empty or low external
temperatures
Contact the Service
centre
Delimited
on the
event
FANS # ** THERMAL
SWITCH
Blocks the circuits
Contact the Service
centre
Manual
COMPRESSOR #
THERMAL
Blocks the
compressors
Contact the Service
centre
Manual
DEL. FAN THERMAL
SWITCH
System block
Delivery/intake fans thermal switch
activation
Contact the Service
centre
Manual
FILTERS BLOCKED
Display only
Functioning hours of the filters
exceeded
Reset alarm and check
filters
Manual
FILTERS DIRTY
Display only
Filters dirty
Clean/replace
Manual
AIR FLOW
System block
Contact the Service
centre
Manual
HEATERS THERMAL
SWITCH
Operation block of the
heaters and
modulating generator
Heaters and modulating generator
thermal switch activation
Contact the Service
centre
Manual
HEAT. # THERMAL
SWITCH
Blocks heaters
operation
Thermal switch tripped (input not in
common with Gen. Mod. thermal
switch)
Contact the Service
centre
Manual
DUAL STAGE GEN.
THERMAL SWITCH
Dual stage generator
operation blocked
Dual stage generator thermal switch
tripped
Contact the Service
centre
Manual
SMOKE
System block
Fire alarm
Contact the Service
centre
Manual
PHASE SEQUENCE
System block
Phase sequence alarm
Incorrect Phase
Sequence, Failure of a
phase, Low voltage [V]
Manual
MOD. GEN. THERMAL
SWITCH
Modulating generator
operation blocked
Thermal switch tripped (input not in
common with heater thermal switch)
Contact the Service
centre
Manual
SYSTEM HOURS OF USE
Display only
System operation time threshold
exceeded alarm
Contact the Service
centre
Manual
MOD.GEN. HOURS OF
USE
Display only
Modulating generator operation time
threshold exceeded alarm
Contact the Service
centre
Manual
ELE. COIL HOURS OF
USE
Display only
Electric coil operation time threshold
exceeded alarm
Contact the Service
centre
Manual
COMPRESS. # HOURS OF
USE
Display only
Compressors operation time
threshold exceeded alarm
Contact the Service
centre
Manual
11.3.2 Description and resolution of USER alarms and Probe Errors
Summary of Contents for EXTK PRO
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Page 5: ...SPL User Manual Page 5 of 24 0412 6180864 rev 00 6 DIAGRAM OF THE PARAMETER MASKS ...
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