Temperature Control Failed (1 - 4) - Agilent Technologies 1100 Series Reference Manual

3
Troubleshooting and Test Functions

Temperature Control Failed (1 - 4)

There are four Peltier elements build into the ALS thermostat for efficient
cooling / heating. The electronics monitor the current through the Peltier
elements. If the Peltier current is out of a specified limit the Peltier element is
defective.
Probable Causes:
• One of the four peltier elements is defective.
Suggested Action:
contact the Technologies service organization
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