Temp Light Flashes When A/c Is Turned On?

[Chris_944]

I have a 2.0 HDI 2001 Synergie which I believe is the same as the dispatch and this has only just started happening.

 

Even when you first start the car and it's cold if you have the A/C on the temp light flashes like it's overheating when it's not. Have checked all water levels etc and they are good, anyone else come across this?

 

Thanks Chris

[Johndouglas]

Don't know whether this will help. My daughter's Xsara's temperature light began flashing, together with a warning beep after first starting with a cold engine. Eventually, I changed the temperature sender unit in the head then all was well.