Starting reciprocating/screw comp ressor in MANUAL mode, continued
Che ck that input
Starting re quest fee dback,
termina ls (X3/19- 20), is closed . Can also be
checked in picture
Service /Diag nosis /
Hardw are/Digital input/P MS feedb ack = 1
.
Press to start compres s or.
Light diode on front flashes
gree n
Che ck emerge ncy s top a nd TÜV
pres sure control, if any. The re
must be conne ction betwee n
terminals (X13/1-10).
Doe s
comp res sor
sta rt?
PMS
error mes-
sage re-
ce ived
Input
closed?
Try a gain
Apply jumper, or che ck conne c-
tions from terminals (X12/17-18)
to power ma na gem ent sys tem .
Is
digital
output c ompress or
motor start
activa ted
when trying to st art
(Digital output
diode no. 1
is on )?
Conta ct
Johnson Co ntrols
Denma rk
Che ck connection from termina ls (X12/
1-2) to motor sta rter
Con nection
OK?
Corre ct wiring
connection
Is there f e ed-
back on termi-
nals (X3/1-2)
from moto r
guard? Digital
input di ode no.
1 is on.
Check pre-fuses a nd control
voltage of motor guard.
1
OK
Corre ct wiring
connection
3
Yes
Yes
Yes
Yes
Yes
Ye s
No
No
No
No
No
No
Fig. 49: Error diagram no. 2
Troubleshooting
288/319
Engineering manual - Unisab III 1.10
001930 en 2014.09
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