OAT reads 68 deg and doesnt change

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dalewilley
Posts: 9
Joined: Thu Dec 09, 2021 3:52 am

OAT reads 68 deg and doesnt change

Post by dalewilley »

I recently changed the EIS from a 6000 to the R66 and have noticed that the OAT stays at 68 deg even though the temperature is significantly different. The value does not vary throughout the day. The sensor is the OAT 3 sensor type connected to pin 22 of connector A. Does this suggest a faulty probe or are there some offset/SF settings required for the newer EIS?

Thanks

Dale
GRT_Jeff
Posts: 832
Joined: Tue Dec 11, 2012 12:11 am

Re: OAT reads 68 deg and doesnt change

Post by GRT_Jeff »

In the EFIS, go to SET MENU, General Setup, and set "Outside Air Temperature Source" to EIS to make sure you're reading the EIS OAT. For the OAT to stay constant it would need a constant resistance on the OAT input. 68 F would be around 12500 ohms resistance across the two wires of the probe. If it were disconnected, failed, or shorted it should go to some extremely cold or hot temperature like -50 or +127.
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