Yanmar 2GM20 alarm chirping

Don107

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Joined
20 May 2012
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211
Location
Port Huon Tasmania Australia
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Hi all
Just recently the warning alarm on my 1984 raw water cooled Yanmar 2GM20 has started chirping at low revs and the overheat light is also flashing in sync while the alarm is chirping
I don't think that the engine is overheating as this can happen not to long after start up when the engine is still cold
There is plenty of water flow out of the exhaust at low revs and when it happens if I increase the revs it will stop
I have googled it and there are other cases of it happening and some say it is a fault with the panel
Any thoughts would be appreciated
Regards Don
 
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