[Elecraft] KPA 500 Fan Not Running

[Mike K2MK]

Hi Paul,

My fan turns on at 50 decrees C. 

If the fan doesn't turn on when you turn off the amp it sounds like there is
something wrong with the fan. This function is not related to internal
temperature.

73,
Mike K2MK


Elecraft mailing list wrote
> Having a KPA 500 fan problem I believe. Was running the amp during RTTY
> contest and experienced - a Hi Temp  hard fault. The case was very warm to
> the touch and the fan was not running. KPA Menu - Fan Ctl - is set to
> normal. So I let it cool down and then ran a test calling CQ a normal run
> rate (Amp putting out abt 200W) and watched temp climb and the fan does
> did not come on. When I shut the KPA off, the fan does not run. Does
> anyone know at what thresholds fan should start running ?  Is there some
> way to do a fan test?73 Paulkc2nyu





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