Forum Discussion
donn0128
Oct 13, 2016Explorer II
Again, BRAND PLEASE!
The little black box is nothing more than the gas ignitor box. Temp relay pack calls for heat, the signal is sent from the black box to the gas valve and the ignitor. When flame is sensed the ignitor stops cycling. When temp is reached, the sensor pack opens, cutting power to the gas valve shutting down the gas flow. Really simple system. If your dealer cant seem to figure out how to fix it, it miht be time to find another service department.
The little black box is nothing more than the gas ignitor box. Temp relay pack calls for heat, the signal is sent from the black box to the gas valve and the ignitor. When flame is sensed the ignitor stops cycling. When temp is reached, the sensor pack opens, cutting power to the gas valve shutting down the gas flow. Really simple system. If your dealer cant seem to figure out how to fix it, it miht be time to find another service department.
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