Fermentation temps fluctuating

[J-Rock44]

I recently brewed my first all grain batch and fermented in a SS BrewTech 7 Gal. FTSs temp controlled system. I coupled it with a chiller and set my temp to 70*. We had a few cooler nights and the fermentation temp dropped 9* below set point a few times. With the lower temp and using WLP001 (temp range 68 - 73) I decided to add a few extra days to fermentation. My question is, does this lower temp affect the process negatively at all. I know if the temp gets too warm the yeast add some pretty unfavorable contributions to the beer.

Anyone have any thoughts on this?

Thanks Guys,

J-Rock

 

[m00ps]

it depends on how long into fermentation this happened, many many times is a "few" and how long until it got corrected. Im not familiar with this fermentator and how it measures temperature. Is this the external surface of the fermentor or some kind of probe inside the wort?