Agilent Technologies 7890A Troubleshooting Manual page 79

Thermal Shutdowns
Troubleshooting
A thermal fault means that the oven or another heated zone
is not within its allowable temperature range (lower than
minimum temperature or higher than maximum
temperature).
To recover from this state:
Fix the cause of the shutdown:
1
• Check for missing insulation.
Most thermal shutdowns can be cleared by shutting off
2
the thermal zone.
5
Shutdown Symptoms
79