Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: Can a outdoor sensor be used with this thermostat?
Document: Typical 5-2  4 stage thermostat. Used C7089U1006 Outdoor Sensor to switch from heat pump to Aux Heat. Works good. It isn't so much saving money on heat bills, but replacing that stupid heat pump and keeping warm.
Calls to Honeywell led me on a long and frustrating ordeal manuevering through call centers, but I finally got back to the U.S. and someone who actually knew something about the thermostat (come on Honeywell... can't you really spend a few extra dollars and make it easier on us?! )The problem I was experiencing was an incorrectly wired outdoor temperature sensor. On a dual heat system the outdoor temperature sensor is needed to let the thermostat know when to go from heat pump to propane.
Context sensitive menus keep the focus on just what you need to do just when you need to do it. Thoughtful additions include the aforementioned backlighting and change (filter/pad/bulb) reminders, selectable automatic daylight savings time adjustments, settings preserved in case of power failure, outdoor (or remote indoor) temperature display, humidity control, and the ability to select and program any combination of days simultaneously.The only unpleasant surprise I had with this was in connecting the outdoor temperature sensor. Honeywell specifies the C7089U sensor.
The relay I used did not work as expected so I gave up.Many other thermo's have this setting adjustable.This would be a good thermostat for radiant systems or well insulated houses where heat loss is minimal. Not this old hose.
This is the forth Programmable Honeywell Thermostat I have purchased. I installed all myself. Just follow the instructions. I bought this for the church building which is used three days a week. Now when the building is used everyone is comfortable when they arrive and turns off when the leave. The rest of the days it is resting.
These induced voltages will cause this thermostat to fail over time; it's a sensitive device.The lesson here is to pay close attention to how you heating and electrical contractors handle wiring like this. Any sort of sensing circuit (in my case the temperature sensor) should be run with shielded cable. The other mistake the heating contractor made was placing the temperature sensor inside the heat pump.
I took the sensor out of the heat pump and put it in a vented plastic enclosure. They I ran shielded cable and grounded the shield at both ends. I wired the thermostat the correct way and it now performs flawlessly.So this is a top notch thermostat from an old reliable company. Make sure it's wired correctly and you won't have to waste time talking to uninformed people overseas!! !
I like the thermostat and used it to replace a very similar Trane model because I wanted dehumidification control. After 6 months the unit became intermittent and would go blank unless I flexed the case or tapped on it, clearly defective. After several calls to Honeywell and no follow through they finally told me this is considered a &#34;contractor&#34; model and they don't handle warranty claims. They tried to shame me for doing my own install and told me to call my contractor for replacement.
My installer took the easy path and just hooked the temperature sensor to two extra wires in the thermostat cable to save time. Most of the time you'd get away with this, but in my case the thermostat wire crossed a high voltage wire along it's path. The thermostat displays temperature by sending a tiny current down the line to measure the resistance of the temperature sensor. It's imperative that the temperature sensing circuit be free of any stray voltage.
(It's been hot, but not THAT hot!) No fault of the device, but obviously the old and new Outdoor Sensors are NOT interchangeable.
Answer: yes