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Hi,
I recently installed a honeywell vision pro thermostat with the optional outside sensor. At first I used 2 extra conductors in my thermostat wire for the outside sensor but got some wacky reading. I ran a seperate shielded 2 conductor 18 ga cable just for the outside sensor. When I connected the sensor to the first thermostat everything was working great, when I connected the wire to the second stat I am reading 100+ degrees when it is 17 outside. Both were wired using the same 18/2 shielded cable?
Thanks
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Ok, some more information from testing. I have two seperate shielded 18/2 cables running from each thermostat to the basement. If I connect either to the outside sensor it works perfectly so I know there is no interference on either cable. The problem is when I connect both cables from the stat to the outside sensor, the temperature goes nuts. Is a diode needed?
Thanks
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Is it possible that the outdoor sensor will only support 1 thermostat (2 sensors for 2 stats). I thought the resistance it measured would be the same?
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Originally posted by lkaufman
The problem is when I connect both cables from the stat to the outside sensor, the temperature goes nuts. Is a diode needed?
HA HA HA HA HA HA ROFLMAO
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1 sensor can't be used on 2 stats. Lucky nothing has been damaged.
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