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microKool Portable Chiller UGH004/0999
6-6 TROUBLESHOOTING
SHUT DOWN
ALARMS
The chiller has detected a problem that could lead to equipment
damage or personal injury if it is not corrected.
◆ The Alarm LED lights and the STOP/RUN LED flashes red.
◆ The chiller automatically shuts down.
◆ The control displays a red LED or alarm code indicating the
source of the problem.
Alarm
The incoming
power is out of
phase. A leg may
have failed or is
disconnected.
NOTE: This alarm
is available only on
PC-2 models.
Pump fuse.
Compressor fuse.
Unloader valve fuse.
Unloader valve fuse.
Level Switch fuse.
Possible cause
Is the pump rotating in
the wrong direction?
Has one of the main sup-
ply wire leads become
disconnected?
Has the indicated device
blown a fuse?
Is the correct device
being used for this fuse
location?
Has the motherboard
output channel at the
designated fuse failed?
Solution
Check pump rotation against
the arrow stamped on the
pump. If the pump is rotating
in the wrong direction, discon-
nect and lockout the main
power source. Open the electri-
cal enclosure, and reverse
any two leads on the power
connection.
Disconnect power and open
the electrical enclosure. Check
for loose connections in main
supply and on motherboard.
Disconnect and lockout the
main power. Open the electri-
cal enclosure. Check for loose
wires and incorrectly installed
jumpers or terminal blocks
associated with the fuse error.
Replace the fuse, if necessary.
See
C
HECKING AND
R
EPLACING
F
USES
.
Replace the fuse, then enter
Test Mode. Turn off the Output
Monitor associated with the
fuse location and test outputs.
See
P
ERFORMING
S
YSTEM
T
ESTS
and
D
ISABLING OR
E
NABLING
O
UTPUT
M
ONITORS
in the
M
AINTENANCE
section.
Replace the motherboard. See
R
EPLACING THE
M
OTHERBOARD
.
ErrPHS
002FUS
003FUS
004FUS
005FUS
006FUS