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/diy/ - Do It Yourself

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>> No.2458848 [View]
File: 369 KB, 663x714, Screenshot_2022-09-01_18-20-30.png [View same] [iqdb] [saucenao] [google]
2458848

>>2458840
That implies that the fan is not cooling the heated stuff as fast as before. Maybe the fan is going bad, maybe the duct or whatever is clogged, or something else has changed. If it's a simple temperature switch I think they just fail, but if it's a smart system with sensors and brains no telling what could have changed.

Pic related is an overtemperature protector, but some furnaces use a similar devices to turn the fan on and off.

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