Watson W8681-Pro data logging problems HELP!

[exodus]

Hi all, if anyone has this weather station I was wondering if you'd had a similar problem to me... I've had the station since August and it reads and records data fine, however twice now the rainfall reading on the base station has reset to 0...I've lost my yearly total to date as well as monthly reading. All the historic highs/lows remain etc but my cumulative readings have been reset. I'm not sure if i've changed something in the settings and have caused it to do it but i'm looking for some suggestions of where i might start trying to work it out. 

 

Thanks!

[trebor]

Is it just the internal memory filling up and over writing itself. The only sure way to keep long term data is to connect it to a pc and or upload to the internet like the weather underground