Brookfield Temperature Controller, Model 106 - Manual (Page 20)

Brookfield Engineering Labs., Inc. Page 20 Manual No. M/98-206-A0402
2) The controller is providing power to the Thermo Container, but the temperature sensor is not
reporting an increase in temperature. The power to the Thermo Container will be interrupted.
It will be necessary to power down the Programmable Temperature Controller and determine
the cause of the fault before continuing operation.
3) The Programmable Temperature Controller sensed a temperature higher or lower than its built-
in limits.
The following paragraphs provide further detail.
VII.1 Open Sensor Error
If the sensor fails or an open circuit condition occurs (infinite resistance), the unit will cause a
probe error as follows:
0 Л В ‰
Note: The controller will intermittently beep. This error message could be momentarily
preceded by either of the following displays:
lÏ - -
h 1 - -
The Programmable Temperature Controller will stop control and will stay in this state until the
problem is corrected. This is usually due to the temperature probe not being plugged into the Pro-
grammable Temperature Controller. Once corrected, the unit will return to viewing the controlled
temperature.
VII.2 Thermosel Overheat Error
If the sensor becomes dislodged from the Thermo Container, or if the sensor is left out of the
Thermo Container due to an operator error, or the Thermo Container coils become open, and the
Programmable Temperature Controller is not sensing a temperature rise while dispensing power to
the Thermo Container. It will display the following message after approximately a 3-minute delay: