Inquiry (采购产品): taco sr503 We have had two block wide power brownouts in two weeks,it would appear this correlates with the sr503 ceasing to function afterwards.We do not know the length of the brown outs,was the issue undervoltage or a surge when voltage levels returned to normal levels.No visual signs of damage,burning,discoloration.etc.Any suggestions?This is a apartment/residential application. **** Hidden Message ***** keith knecht 06032 Company: kwk electric E-mail: kknecht@comcast.net **** Hidden Message ***** kknecht@comcast.net