TurboChef Technologies Residential Single and Double Wall Oven - Manual (Page 71)

TROUBLESHOO
TING
6.7
1. Replace the bulb (see page 5.5).
2. If replacing the halogen bulb did not fi x the
problem, access the rear of the halogen light
assembly and disconnect the two green wires at
the wire connectors.
3. Apply the probes of the voltmeter to the two
green wires leading from the oven. Th
e voltage
reading should be 12 VDC.
- If 12 VDC is present, the halogen light
assembly is faulty and needs to be replaced.
- If 12 VDC is not present, check all wires
and connections in the halogen light system.
Both Speedcook Oven Lights are Out
When the control panel switch is pressed and the
oven door is closed, test the control panel switch.
When the oven door is opened and the control panel
switch is not pressed, test the light switch/left lock
motor assembly.
Both Speedcook Oven and Both Lower Oven Lights
are Out (Double Wall Oven)
Test the 12 VDC power supply (see page 6.5 for
troubleshooting).
Cooling System
Th is section contains information on the following
topics:
- Cooling fan overview (Gen 1)
- Cooling Fan Overview (Gen 2)
- Troubleshooting Cooling Fans (Gen 1)
- Troubleshooting Cooling Fans (Gen 2)
Cooling Fan Overview (Gen 1)
A motion sensor on each of the two cooling fans
sends voltage pulses of 5 VDC to the control board.
If one of the cooling fans is not spinning, a cooling
fan error will be displayed.
Components that activate the cooling fans are:
- CookWheel (Speedcook oven)
- Mode knob (lower oven)
- 140°F (60°C) snap switch (Speedcook oven)
- 160°F (71°C) snap switch (lower oven)
- If 120 VAC is present, the transformer
is faulty and the relay board needs to be
replaced.
- If no voltage is present, investigate the 15
amp fuse (F2) on the relay board.
Halogen Light System
Th is section contains information on the following
topics:
- Light switch, control panel
- Light switch, Speedcook oven
- One Speedcook oven light is out
- Both Speedcook oven lights are out
- Both Speedcook oven and both lower oven
lights are out (double-wall oven)
Light Switch, Control Panel (Manual)
1. Access the control panel light switch through
the upper electrical compartment.
2. Disconnect the light switch from the harness.
Separate the harness at the connection between
the blue/black wires.
3. Apply the probes of the ohmmeter to the two
black wires attached to the switch.
4. Check for continuity through the switch by
manually engaging the switch.
Light Switch, Speedcook Oven (Door-Actuated)
1. Access the light switch by removing the left lock
motor
assembly.
2. Disconnect wiring leading to the light switch.
3. Apply the probes of the ohmmeter to the
electrical connector still attached to the
assembly, pins 2 and 6 (purple wires).
4. Check for continuity through the switch by
manually engaging the switch.
One Speedcook Oven Light is Out
CAUTION: DO NOT touch the bulb with
bare fi ngers; rather, use gloves, cloth or tissue to hold
the bulb. If the bulb is accidentally touched, clean it
with isopropyl alcohol before applying power.