Hach-Lange PHOSPHAX indoor sc - Manual (Page 48)

48
Troubleshooting
NO HEAT UP
Instrument goes
into the service
state
Instrument cannot
heat interior
adequately.
(internal temp
<20°C (68°F) for
30 min)
Close instrument, check heating
Reset error
manually
COOLING FAILED
Service state,
starts
automatically after
cooling down
Instrument interior
is too warm (>57°C
(135°F))
Check air filter and clean/replace, check
fan.
Manual reset or
automatically when
temperature falls
2 °C (3.6 °F) below
limit
HUMIDITY ANALY Service state
There is liquid in
the collecting tray
Identify cause and rectify
Reset error
manually
HUMIDITY
PROBE
Service state, the
filtration probe sc
is isolated from the
mains
There is liquid in
the filtration probe
enclosure
Immediately take filtration probe sc out
of operation and contact service. Take
the filtration probe sc out of the tank and
store the filter modules so that they
remain moist. (See operating
instructions for the filtration probe sc).
Reset error
manually
PROBE MISSING
Service state, the
filtration probe sc
is isolated from the
mains
The filtration probe
sc is faulty or not
connected
Immediately take filtration probe sc out
of operation and contact service. Take
the filtration probe sc out of the tank and
store the filter modules so that they
remain moist. (See operating
instructions for the filtration probe sc).
Reset error
manually
TEMPSENS
DEFECT Service state, fan
running, heating off
The temperature
sensor for the
internal instrument
temperature is
faulty
Immediately switch off instrument,
contact service, replace main circuit
board
Reset error
manually
CUVSENSOR
DEFECT Service state,
cuvette heating off
The temperature
sensor for the
cuvette is faulty
Contact service, replace cuvette/sensor
Reset error
manually
CUVHEAT
DEFECT Continued
measurement
The cuvette is not
being heated
adequately Close instrument door, contact service,
check cuvette heating, check main
circuit board
Reset error
manually
CUV TOO HOT
Service state,
cuvette heating off! The cuvette is
over-heated.
Sample too hot/ heating regulation
faulty, check main circuit board, contact
service
Reset error
manually
PHOTO LEVEL
LOW / PHOTO
LEVEL2 LOW
Continued
measurement
Photometer signal
too low (1channel,
2 channel
operation ,
depending on
channel that
triggered the
error). Not enough
sample available.
Trigger cleaning (several times).
Manually clean photometer. If this action
solves the problem, increase automatic
cleaning, otherwise contact service.
Check sample delivery.
Reset error
manually or
automatic if level is
OK again
7.2.2 Error messages (continued)
Error displayed
Instrument
reaction
Cause Solution Reset error