Frequently Asked Questions (FAQ)
My fast acting fuse is blowing. What causes this?
For example, it seems that the most common causes are a ground fault caused by contact between the heater and the furnace body, or a short circuit caused by the adhesion of conductive material.
Check insulation of the heater and understand the relative positions of the heater and furnace body (when the temperature rises, the heater may expand and come into contact with the furnace body).
Cleaning the furnace body is an effective countermeasure.