Hello clever people, I hope you can help. Four weeks ago the fan on our Easy solar system stopped turning off, it runs constantly, even at night. The days have got hot (45 deg C), but night temps are mild (23 deg C). We are off grid. I contacted the installer and they said this is normal cooling, but the unit dosn't feel hot at all during the night. The system is mounted outside our bedroom and its very noisy. Is the installer right, is it normal for the fan to run all night?