Lower ignitor resistance increases the current flow through the bimetal coil. When the ignitor is fully heated, its resistance is low. Low resistance causes maximum current to flow through the bimetal coil (2.5 to 3.6 amps).
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L1 | LO | HI LO | HI N |
| OVEN CONTROL |
| BIMETAL | ||
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As the bimetal coil heats, it heats the bimetal arm inside the gas safety valve.
LOW
CURRENT
FLOW (IGNITOR IS COLD)
VALVE CLOSED
GAS OUTLET
BIMETAL ARM
BIMETAL
COIL HEATS
GAS INLET
As the bimetal arm heats, it bends and opens the gas safety valve outlet to the burner.
HIGH
CURRENT
FLOW (IGNITOR IS HOT)
VALVE OPEN
GAS OUTLET
BIMETAL
COIL HEATS
& BENDS ARM
GAS INLET
- 18 -
