The heat(ing) is on

17°C, Dry, light cloud

The innocent fan. Blame the circuit board!

He’s done it, the water boiler works now. The fan was not guilty all along, it was the circuit board causing trouble. By the look of it, the board is just a set of relays & an IC chip to control the front LEDs. Perhaps a relay failed, it does tend to be a mechanical failure more often, relays physically throw a switch rather than some transistor method. You can hear them click inside.

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