User Manual

19
In the Event of Failure…
Safety Device and Err or Code
This unit has an automatic diagnosis function built in the controller and safety devices independent of the
controller. The table below shows t he cause and the solution method when the safety device operates.
Error Code:
When an abnormal condition occurs, an error code and the trouble indicator blinks in the
controller, the buzzer sounds simultaneously. Record the error code and turn off the power of
device im m ediately.
Safety Device Notify Cause/Solution
Sensor trouble detection
“TROUBLE” lamp blinks,
“Er.01” blinks
• Temperature sensor is broken or
disconnected.
• Make a call for service.
Triac short-circuit det ection
“TROUBLE” lamp blinks,
“Er.02” blinks
• Triac is in shor t -circuit
• Make a call for service.
Heater disconnecting detection
(or independent overheating
prevention device is operates)
“TROUBLE” lamp blinks,
“Er.03” blinks
• Heater is disconnected.
• Independent overheating prevention
device is operates
• Make a call for service.
Main relay trouble det ection
“TROUBLE” lamp blinks,
“Er.10” blinks
• Main relay is broken.
• Make a call for service.
Electric circuit t r ouble det ect ion
“TROUBLE” lamp blinks,
“Er.15” blinks
• Failure in electr ic cir cuit.
• Make a call for service.
Troubl e Shooti ng
Before call us...
Condition Check the foll owing.
The device does not start operation
when turning on the pow er sw itch.
• Power plug is not connected t o t he receptacle correctly.
• Power failure.
Temperature fluctuates during the
operation.
• Too much samples.
• The change of ambient temperature is remarkable.
• Samples are too moist.
• The power supply voltage is low er t han t he proper value.
In the case if the error other than listed above occurred, turn off the power switch and primary
power source immediately. Contact the shop of your purchase or nearest Yamato Scientific
Service Office.