F2 low temp
The most common probem is burned wires going to the heater on the top of the oven cavity. Typically you will see the coating on the wire close to the heater all cracked and bare. You can usually just cut the wire back an inch and pull some slack up and reconnect the wire and you will be good. In some cases the wire will be burned to much and the whole wire will need to be changed. Any oven repair shop will sell you these high temp wires. DO NOT use regular wires they MUST be high temp rated.
Here is some other things to check if the heater wires look good.
The IR element - a dual coil type heater - is located
in the bottom of the oven cavity. The first coil is the
heating coil. The second is the IR thermocouple
wire. The heating coil outputs 3000 watts at 208
VAC. The heating coil's resistance is 14.4 ohms at
The thermocouple coil is a Type K thermocouple
with a resistance of approximately 20 ohms at the
splices located approximately 6 inches from the
heater and 40 ohms measured at the extension wires
at the I/O control board.
The IR element is controlled via the K5 solid state
relay and the IR thermocouple via the I/O control
Also try this
1. Verify the high-limit thermostat is not tripped.
o If high-limit is tripped, reset and allow the oven to warm up.
o If high-limit is not tripped, follow the instructions below.
High-limit thermostat is not tripped.
Place a small water load in a microwave/heat-resistant container
(approx. 275 ml) in the oven and place the oven in TEST MODE. Press
the MGTRON key to actuate the microwave. While holding down the
MGTRON key, watch the CC and IR temperatures. If either temperature
bounces substantially, there may be a noise (EMI) problem.
To correct this problem, examine the wire routing for each
thermocouple wire. If the wires are routed near any high voltage
components such as the magnetron or high voltage transformers, reroute
the wires. If this does not correct the problem, verify that both
magnetrons are securely mounted.
May 20, 2010 |
TurboChef TORNADO Electric Oven