The igniter does glow red but the burner does not ignite. Is there a thermocoupler and if so could it be bad?
ANSWER Hello Don,
The ignitor 12400035 is probably bad because if it's only turning red, it isn't hot enough. You see, the ignitor has to pull 3.2 to 3.6 amps in order to build up a strong enough magnetic field to open the gas valve. When it's pulling enough current, it will glow bright orange to almost white hot. The current can be measured with a clamp on amp meter TJCL1100. To do this, clamp the amp meter on one wire that leads to the ignitor.
A thermocouple is not used with an ignitor. If the issue isn't the ignitor, it will be the burner 74005025 or the safety valve 74001929 or both.
Answered by AppliancePartsPros.com | Wednesday, July 04, 2012