LED Display error codes
1. As previously mentioned in this manual, the ThermoClamp will
display an “E” on the Control LED display if it is currently in an error
state, and the “E” will go away when the control sensor warms and the
system leaves the error state.
2. If the system detects excessive current in either of the heater channels
after it has made several attempts to incrementally reduce the software
control limits, then it will completely shut the heaters off and display
an “H” on the safety LED display, with the yellow Max Temp light
flashing. The only way to return from this error state is to power cycle
the controller (turn it off and back on), but please check the heater
before doing so, since there could be something wrong with the way
the transistors are mounted, or a transistor could have failed.
3. The system always needs a safety sensor to be connected to operate,
so it will display “Err” on the safety (right) LED display if no
thermocouple is plugged into the Safety jack. The system will not
power the heaters if the Safety sensor is unplugged.
4. If any errors occur that prevent the autotune process from finishing
and setting new gains, then the controller’s LED display will show
“Auto Err” until either the Up or Down button is pressed to clear the
error. If “Auto Err” is displayed on the controller, then it has NOT set
new control gains for the AUTO mode.
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