82 1100 Series DAD and MWD Reference Manual
3 Troubleshooting and Test Functions
Heater Failed
Every time the deuterium lamp or the tungsten lamp is switched on or off a
heater self-test is performed. If the test fails an error event is created. As a
result the temperature control is switched off.
Probable Causes
• Defective connector or cable.
• Defective heater.
Suggested Actions
✔ Ensure the connector to the detector main board is seated firmly.
✔ Exchange heater assembly.
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