Cavity Light; Proof Feature Upper Oven - GE JK3800DH1BB Technical Service Manual

Cavity Light

The oven lamp is inserted in a socket that is
attached to the lamp housing with two Phillips head
screws. The screws are recessed from the top of the
outer cover. Access holes are provided. A magnetic
screwdriver is necessary to capture these screws.
It is necessary to remove the control panel to access
the oven lamp. (See the Control Panel Assembly
section in this guide.)
The oven cavity light will come on during a
microwave cooking cycle.
CAUTION: Do not twist the lamp.

Proof Feature Upper oven

To test the performance of the proof feature, press
the WARM/PROOF pad, then turn the dial to PROOF
BREAD and press the dial to start. The following will
occur:
• The convection fan and interior lamp come on
immediately, and stay on.
• There is an immediate start-up burst (about 1.5
second duration at 75°F ambient) of heat from
the convection heater.
• The convection fan and interior lamp continue
to operate and, if needed, the convection heater
will cycle on.
NOTE: Oven proof temperatures range from
75°F - 95°F. At ambient temperatures above 75°F,
heat generated by the interior lamp may be
heater may not cycle again after start-up.
If an inoperative convection heater in the proof
mode is suspected:
1. Disconnect power.
2. Remove upper oven.
3. Remove the rear access cover.
4. Remove the thermistor from the convection
heater assembly.
5. Lower the thermistor temperature by placing a
chilled or frozen item against the thermistor.
6. Connect power and enter proof mode.
7. Check for approximately 120 VAC (12.3 amps) at
the convection heater.
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