quote from my W-8681 Operation manual:
"
Rain
1)Touch the rain section. +button and -button will be flashing. Touch the +button or -button to shift the display between 1h,24h,week,month and total rain.
.........
4)Touch the rain section the fourth time to display current maximum rain fall record. Touch the rain section for 3s will reset the maximum rain fall value to current value.
5)Touch the rain section the fifth time to
reset rain fall value to 0 by pressing the rain section for 3s,then 1h,24h,week,minth and total rain will be reset to 0.
"
Did you do that? you may have to go thru the steps for each of the settings: 1h, 24h, week, month and total to be sure
If all that does not help, maybe removing the batteries in the console and the transmitter and leaving them out for, say, 15 mins will do the trick.
Good luck
