Unit blower comes on but no heat the light on control board flashes 4 times pause then 4 times again when system is calling for gas these flashes indicate that a [thermal device is open]can anyone help? Icannot find reset buttons on my unit.
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Unit blower comes on but no heat the light on control board flashes 4 times pause then 4 times again when system is calling for gas these flashes indicate that a [thermal device is open]can anyone help? Icannot find reset buttons on my unit.
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