The most common reason for not heating up is because of a blown thermal fuse.
Apparently the controller lets the iron get too hot or the fuse is out of manufacturing tolerance - and so the fuse opens.
The green lamp is normally lit when the relay is off and dark when the relay is on.
When cold, the relay normally turns on within a second of power-up (switched on). During power-up, the green (ready) lamp should flicker on, and then as the relay clicks, go dark.
If the green (ready) lamp does not flicker, the fuse is probably blown.
The fuse is clamped inside the bottom clamshell in silicon tubing. A replacement fuse (240°C) can be purchased from
many sources. The fuse should be re-attached to the wires with new all-metal crimp fasteners.
If the iron is getting too hot and blowing thermal fuses, you may be able to avoid this failure by keeping the thermostat set lower. (Turned a bit counter-clockwise.) If the waffles are no longer dark enough at the ready beep, you may have to use manual override by watching the steam and smelling the waffle.
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