KAESER ESD.2C - Page 203

Message Possible cause Remedy
0039 A
PD temperature ⇞
Package discharge (PD) tem‐
perature too high.
Check the cooling
oil level.
Clean the cooler.
Check the fan mo‐
tor.
0040 A
Mains contactor off?
Main contactor does not
open.
Check main con‐
tactor and wiring.
0041 A
Mains voltage ⇟
Second power failure. Check power sup‐
ply voltage.
Check the door in‐
terlock switch.
0042 A
Back pressure stop
Back pressure in the oil sepa‐
rator tank caused by defective
venting.
Check venting line.
0043 A
Airend discharge temperature ADT rise dT/dt⇞
The rate of rise of the airend
discharge temperature (ADT)
is too fast.
Check the cooling
oil level.
0044 A
No pressure buildup
The machine produces no
compressed air.
The working pressure does
not rise above 50 psi within a
default period.
Check the machine
for leaks.
Check coupling /
V-belts
0045 A
Compressor T ↓↓
Thermostatic valve defective Contact an author‐
ized KAESER
service representa‐
tive.
0048 A
High-voltage cell
Fault in the high voltage cell. Contact an author‐
ized KAESER
service representa‐
tive.
0051 A
Aggregate A
Aggregate A failed. Contact an author‐
ized KAESER
service representa‐
tive.
0052 A
Aggregate B
Aggregate B failed. Contact an author‐
ized KAESER
service representa‐
tive.
0056 A
RD condensate drain
Refrigerated dryer:
The condensate drain is de‐
fective.
Refrigerated dryer:
Check condensate
drain and conden‐
sate conduits.
0057 A
Model?
Compressor model uncertain. Contact an author‐
ized KAESER
service representa‐
tive.
15 Interpreting fault messages
28
Quick user guide Controller
SIGMA CONTROL 2 SCREW FLUID 1.1.3 9_9450 03 USE