Agilent Technologies 7890A Troubleshooting Manual page 63

Oven Never Heats Up
WA R N I N G
Troubleshooting
• Press [Status] to check for errors to report to Agilent.
The exhaust coming from the back of the GC is very hot. Keep
hands and face away from the exhaust vent.
• Power cycle the GC.
• Check oven flapper operation.
1 Increase oven temperature by at least 20 degrees.
2 Verify that the oven flaps in the back of the GC are
closed. The figure below illustrates the location of the
two oven flaps.
If the flap is stuck open or if the flaps are closed and the
oven still does not heat, contact Agilent.
GC Not Ready Symptoms
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