92 CT-600-2
No. Alarm / warning description Related
function
Possible causes
15 Oil temperature low 2.14 Error thermostatic element
Too high flow of cold liquid on secondary side oil
cooler
16 Oil temperature high 2.15 Error thermostatic element
Too low flow of cold liquid on secondary side oil
cooler
Termosyphon system not working properly
17 Oil separator temperature low 2.16 Oil heaters not working
Incorrect parameters for oil heater control
18 Oil separator level low 2.17 Too little oil in separator
Excessive oil carry over to discharge side
Excessive oil loss to suction line
Oil return solenoid valve or oil stop valve leaking or
defect
Compressor eco check valve not closing (or manual
forced open)
Check valve for plant oil return defect (oil moves to
plant)
19 Oil separator level high 2.18 Too much oil in oil separator
Error in plant oil return system
20 Oil separator coalescer level high 2.19 Oil not returning (or too slow) from coalescer collector
to compressors
Error in solenoid valve(s) oil return system
Stop valve(s) oil return system (partly) closed
21 Oil separator load high 2.20 Operating point far away from what system is
designed for
Typically lower than anticipated condensing pressure
23 Total current high 2.22 Sum of all motor currents exceeds limit
24 Process temperature low 2.36 Too little load / too much capacity
Process flow too low
27 Capacity request too low 2.40 Too little capacity request to start first compressor
28 External capacity limiter 2.42 User reduces capacity externally (auto mode only)
30 External input emergency stop 2.30 Shut down due to emergency stop or activated safety
chain
31 External input external alarm 2.31 Shut down due to external alarm (from plant)
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