Blue Box SIGMA 2002, Инструкция по установке, эксплуатации и техническому обслуживанию

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Models 14.4 - 26.4, controller pCO
2
Blue Box - Page 84
SYMPTOM OPERATION PROBABLE CAUSE POSSIBLE CORRECTIVE ACTION
COOLING HEATING
G)
No compressor
running. Display On: ⊗ ⊗ No consent from digital
input to compressors Check consent to compressors
and close relative contacts
unit ON without alarm
⊗ ⊗
Unit at temperature Normal operation
⊗ ⊗ Compressor fuses burnt-
out Check continuity of fuses; if
burnt-out call service
⊗ ⊗
Controller faulty Call service
H1)
Only 1 compressor
running. Display On ⊗ ⊗ Excess refrigerant charge Check refrigerant charge and call
service organisation
with alarm
“High Pressure
Compressor 1 and 2 or
3 and 4” ⊗ ⊗ Problems at the condenser
hydraulic circuit Check flow and temperature of
condenser entering water
⊗ ⊗ High pressure switch
incorrectly calibrated or
faulty Check pressure switch setting
⊗ ⊗ Pressostatic valve
incorrectly set
Check setting of pressostatic
valve and call assistance
H2)
Only 1 compressor
running. Display On
with alarm ⊗ ⊗ Insufficient refrigerant
charge due to a leak in the
circuit Call service
“Low Pressure
Compressor 1 and 2 or
3 and 4” ⊗ ⊗ Thermostatic valve faulty Call service
⊗ ⊗ Solenoid valve of liquid
refrigerant line faulty (if
present) Call service
⊗ ⊗ Dehydrating filter clogged Call service