| Electronics > Repair |
| Invertor 48V /220V |
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| Jane:
The invertor has 2 air fans that start only when quite a high electricity consumption is needed . Otherwise the fans are quiet. It worked that way for about 2 years. Now,however, the fans work all the time. On the enclosed pictures you can see a region where fans are connected. It seems quite simple. Anyone knows the principle , how the fans are controlled? Thank you |
| Kwakerman:
Looks like you have a temperature sensor attached to the heatsink (first picture top heatsink). Might be for overtenp protection or fan control (or both). Suggest you try and find a circuit drag for it. |
| Jane:
Thank you for the reply. Can you please mark in the picture where do you think there is the sensor? |
| voltsandjolts:
It's here: |
| johansen:
the traces on the board run all the way to it. looks like the fans get power from a rectifier and aux turns on the transformer. |
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