Hitachi CHROMASTER 5160, Instruction Manual

Page: 697 / 1022

4.4 Troubleshooting
(cont’d)
No.
Symptom
(Error message)
Cause Remedy
1. Upper temperature limit
is too low (The upper
limit of temperature is
set at a level lower than
ambient temperature.)
2. Temperature sensor
abnormal
12 OVER MAX
TEMPERATURE LIMIT
PRESS “CL” KEY,
THEN CHECK MAX
LIMIT
3. Circuit board faulty
1. Set upper temperature limit
properly.
2. If error recurs after power is
restored, contact your nearest
service office of Hitachi High-
Technologies Corporation sales
representative.
NOTE:
Pressing the CL key can clear this
error indication. Temperature
control, however, remains off until
making temperature setting and
upper limit setting again.
1. 100 V AC not obtained
from power outlet
2. Main unit power cord is
not inserted in power
outlet
3. Main power switch on
side face of column oven
unit is not turned on
13 LED does not light up
4. Blown fuse at rear of
main unit
1. Turn power ON.
2. Insert the power cord.
3. Turn on the main power switch.
4. Replace the fuse.
14 Temperature does not
displayed
Inside cover is open Close the inside cover.
15 Temperature does not
rise (or fall) 1. Inside cover is open
2. Error has occurred
3. Error isn’t reset.
(after occurrence of
temp. upper limit error)
1. Close the inside cover.
2. Eliminate cause of error, then
reset error.
3. Reset temperature and upper
limiter.
1. Front door is open 1. Close the front door. 16 READY status not
attained
2. Error has occurred 2. Eliminate cause of error, then
reset error.
1. TOLERANCE setting is
too low
1. Increase the TOLERANCE
setting.
17 Takes much time to
attain READY status
2. WAIT TIME setting is
too long
2. Set a shorter WAIT TIME.
1. Alarm level of gas leak
sensor is too high
1. Adjust alarm level of gas leak
sensor.
18 Gas leak error not
issued although liquid
leak has occurred
2. Gas leak sensor faulty 2. Inject 50
μ
L of methanol into
oven, and if gas leak sensor
output doesn’t change, contact
your nearest service office of
Hitachi High-Technologies
Corporation sales
representative.
19 Large deviation in
temperature setting
accuracy 1. External temperature
sensor (calibrated one)
not installed correctly
2. Temperature calibration
not set correctly
1. Install the sensor correctly.
2. Reset the temperature
calibration.
20 Nothing indicated on UI
pad Incomplete connection of
UI pad Correct the connection of UI pad.
21 Keying on UI pad not
accepted 1. Keylock status has
been set
2. Chromato data station
(CDS) or GUI controller
is connected.
1. Release the keylock (with ESC
key).
2. Disconnect chromato data
station (CDS)/GUI controller.
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