"NSM" writes:

"H. R. Bob Hofmann" wrote in message
om...

| Maybe it is a sensor to shut the airconditioner down in case the
| temperature gets too cold and there is danger of too much frost/ice on
| the cooling coils, or maybe a shutoff if the compressor temperature
| gets too high. You don't say where this sensor is located, as far as
| I can tell.

From "clips onto the cold end return" I assume it's on the input to the
compressor.

I expect it is a sensor to shut down the compressor if ice forms since
that's a runaway situation - once the ice is present, more ice will
form until the evaporator is a solid block of ice and no cooling of
the room takes place.

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