Models 14.4 - 26.4, controller pCO
2
Blue Box - Page 85
SYMPTOM
OPERATION
PROBABLE CAUSE
POSSIBLE CORRECTIVE ACTION
COOLING
HEATING
H3)
One, two or three
compressors running.
Display On with alarm
“Compressor Thermal
Protections”
⊗
⊗
Problems at the compressor Call service
I)
Only one compressor
⊗
⊗
Unit capacity step active
Normal operation
Running.
Display On
without alarms
⊗
⊗
Fuses burnt-out
Call service
⊗
⊗
Controller faulty
Call service
⊗
⊗
No external consent to the
compressor
Check external consent of
compressor
L1)
All compressors
running. Display On
with alarm
“Compressor
Maintenance”
⊗
⊗
Compressors specified by
alarm require maintenance
Call service for scheduled
maintenance
L2)
All compressors
running. Display On
with alarm “Unit
Maintenance”
⊗
⊗
Unit maintenance required Call service for scheduled
maintenance
M)
All compressors
⊗
⊗
Excess thermal load
Call service
running without
stopping. Display
On without alarm
⊗
⊗
Refrigerant circuits partially
discharged
Call service
⊗
⊗
Controller not working
Call service
Summary of Contents for SIGMA 2002
Page 2: ......
Page 99: ...Blue Box 93 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 SIGMA 2002 DC MODELS 3 2 13 2...
Page 100: ...Blue Box 94 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 SIGMA 2002 DC MODELS 14 4 26 4...
Page 101: ...Blue Box 95 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 HP MODELS 3 2 8 2 14 4 16 4...
Page 102: ...Blue Box 96 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 HP MODELS 9 2 13 2 18 4 26 4...
Page 103: ...Blue Box 97 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LE SIGMA 2002 LE DC MODELS 3 2 26 4...
Page 104: ...Blue Box 98 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LE HP MODELS 3 2 26 4...
Page 105: ...Blue Box 99 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC MODELS 3 2 13 2...
Page 106: ...Blue Box 100 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC MODELS 14 4 26 4...
Page 107: ...Blue Box 101 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC HP MODELS 3 2 13 2...
Page 108: ...Blue Box 102 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC HP MODELS 14 4 26 4...
Page 109: ...Blue Box 103 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC DC MODELS 3 2 13 2...
Page 110: ...Blue Box 104 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC DC MODELS 14 4 26 4...
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