Lake Shore Model 340 Temperature Controller User’s Manual
11-8
Service
Figure 11-11. Location Of Internal Components
11.8 ERROR MESSAGES
Model 340 error messages during normal operation:
.DISABL.
Input is not setup.
.NOCURV.
Input has no curve.
.S-OVER.
Input is at/over full-scale.
.S-ZERO.
Input is zero (does not show up for special or thermocouple sensors).
.T-OVER.
Temperature conversion went off the high end of the curve.
.T-UNDR.
Temperature conversion went off the low end of the curve.
System board error messages:
The slave input processor is not responding.
The curve FLASH chip is not responding.
Flash error code >XXH<
†
†
Write down the error code number and call Lake Shore Service.
Heater error messages:
Message
HTRST? Return Value
Description
– 00
No
error
Supply Over V
01
Power supply over voltage
Supply Under V
02
Power supply under voltage
Output DAC Error
03
Output digital-to-analog Converter error
ILimit DAC Error
04
Current limit digital-to-analog converter error
Open Heater Load
05
Open heater load
*
Load < 10
Ω
06
Heater load less than 10 ohms
*
*
These error messages can be corrected by the user. For all others, contact Lake Shore Service.