Wiring and Setup for the Honeywell Pro 1000 Thermostat 8 terminal The 8 terminal version of the Pro 1000 is also simple to wire and program, but configured. Description Compact digital thermostat for simple temperature management for heating or coolingThreedigit LCD display with special characters for C and. AIRCRAFT SPRUCE CATALOG PDF DOWNLOAD To view the files youll need the Adobe Acrobat reader. If you dont have the Adobe reader, you can download it. View and Download Honeywell T8090A owners manual online. Heating or Cooling Thermostat and Wallplate or HeatingCooling Thermostat and Subbase. T8090A Thermostat pdf. E5D3519B9179DAAB8443FC34FA80CC471FDB48' alt='Honeywell Thermostat Program Pins' title='Honeywell Thermostat Program Pins' />No air conditioning and blank thermostat display. Handyguy Brian had the following conversation, via instant messaging, with his lovely wife or so he thought about how to troubleshoot a blank thermostat, no display, issue with a thermostat and no Air Conditioning AC. No audio here. Below is an actual conversation. The initial assumption was bad batteries in the thermostat but we learned through troubleshooting that the particular thermostat doesnt need batteries, read on and find out how we got the thermostat back on and the air conditioning working. There is a surprise at the end Sarah Is there a reason there is no display on the air conditioning controls Its hot in here and I wanted to turn it on. Its blank. me probably the batteries are dead in the thermostat. The cover should just pop off and I think 2 AA batteries. Try that first. If that doesnt bring it back to life we can then check the electrical panel for a tripped breaker. If thats not it there are a few other things we can easily check. Sarah no batteriesthere r no batteriesme you sure Sarah yesme hmmmmmcheck the breaker box, there should be a breaker labeled AC or hvac or something, flip it off and then back on. Sarah ok brb. Sarah nope didnt workme If that doesnt do it, tell me what model number manufacturer of thermostat we have. Sarah i have no ideame It should say on the cover or somethinghoneywell xyzpdq. Sarah the front says White Rodgersme okay, and a model Sarah there isnt one on the frontme k, hold on a minme Model number should be on the inside of the front cover. Schonell Spelling Test. Sarah u mean the type Sarah 1. F8. 6 2. SYSTEM switch from OFF to HEAT at the same time. Sarah k but we want cold airme please do exactly that Sarah k then do i put it to cool Sarah kkme You are pressing and holding BOTH up and down buttons while moving the switch from off to heat. Sarah i did that and it didnt workme okay, do these things. Double check all the breakers, turn every one off then on2 check the emergency shut off switch at the top of the basement stairs, make sure someone didnt mess with it. Sarah all of them ALL of them. Sarah the breakersughme all of themone at a time. Sarah fine then check emergency switch Sarah k ill start with the breakersbrbme make sure no one messed with it, it should be on. There is a switch behind the cover that turns off the power if its removed. Make sure that cover is secure. In the basement, near the service disconnect switch, look for small thin wires, do they look like someone was messing with them Maybe someone was putting something in that closet and knocked them and pulled one loose Sarah what main unit In the basement closet, the big beige thingthat all the ducts are connected to. Sarah ooo that thing kk brb. Sarah nothing is in there that might have bumped it but it was off so i turned it onme hmmm, someone messed with itdid that fix the problemSarah yes thx ume whew. Sarah now the house will get coolerme one of the kids switched it. Sarah y would they do that How about that Handyguy Brians 1. Item Number Product Description Manufacturer Mfg Item Number.