We have a Rheem LX2000 model RGRAO6EMAES with a White-Rogers 1F80-361 thermostat. Lately furnace will not kick in after temp. drops several degrees below the trigger point. When I look at the PC board the ''PWR'' light is on but the ''OK'' light is flashing. If I turn the furnace power switch OFF and then back ON, the furnace will fire up and run properly for a day or two.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Check condensate water /drain stopped up. It will allow a start after a reset but then it shuts the combustion air fan down and that shuts the unit down this will require a service tech make sure their familiar
with 95% units
White Rodgers 1f80 24 - Compare Prices, Reviews and Buy at Nextag ...
Im not sure what your application is but this stat is for a heat heat pump operation or forced air with A/C and heating.
If you don't need the heat pump operation and you are using forced air furnace make sure all connections are good as labelled and connected to the proper terminals at both the furnace and thermostat
If you installed new batteries and programmed the system without connecting to the sub-base and the numbers are still broken up you should replace it. I have attached a link for you to follow and you can see multiple types of White Rogers on the site home page
Remove the front cover from your thermostat and see if it has a heat anticapator. THIS WILL BE A SMALL ROUND DIAL WITH A CENTRALLY MOUNTED POINTER and a selection of numbers on the outer rim. It should have an arrow on the face of the dial that points one way and says longer and the other way that says shorter.
Check on the rating plate on the gas valve for your furnace and see if you can find the amp. rating for that valve. A usual rating would be .30 or .35 amp If you can find that then hold the dial on your thermostat and move pointer to the closest setting. Put cover back on your stat and turn it up a little to make furnace come on.
Hopefully this will help you. Good luck Thank you and have a happy holidays
if you have 2 wire at thermostat Terminals at furnace that the thermostat wire attach to should be R & W if your new thermostat has R & W terminals is should work, an easy thing to remember is the red wire on R the white wire on W. If 4 wire at thermostat at furnace green on G, Blue on Y, red on R,and white on W same at thermostat If these do not match find a thermostat with these terminals
If you look at control box at roof unit, they usually use a separate set of wires for furnace. See what colors they are attached to at harness to thermostat. Some just follow other harness, and come out at thermostat. (bypass control box) Once you've determined which 2 they are, join them together & see if furnace starts, as it should. If it does, thermostat is faulty. If not, pull outside cover off & check voltages at furnace. I'm guessing by furnace model that your unit is approx 30 ft , but if it's a park model, you may have 24 volt system on furnace or 12 volt. Another way of confirming is to go to back of furnace where air intake grille is inside your unit, and locate 2 blue wires going to furnace & remove whatever wires are attached to them & connect them together. Furnace should start up.
This should be doable: First get pen and paper-start at the furnace, theres a group of 5-8 wires leaving the furnace anfd going to the thermostat and a group of 2-3 going to the condenser outside that all need to be identified and the location in the furnace recorded if your furnace has a control board simply right the letter and the corresponding wire color:and whether it belongs to the condenser grp or the T-stat grp.
Furnace R-red-to t-stat C-yellow to cond Y-red to cond and yellow to t-stat G- green-to t-stat W- white- to t-stat
If you dont have a circuit board youll be doing the same thing but using the components rather than letters;
Transformer 24v- red to t-stat transformer 24v com -yellow to cond Red from cond connected to yellow from t-stat fan relay - green to t-stat gas valve - white to t-stat
K then go to you t-stat and simply connect the corasponding component or leter to the thermostat gterminal
Cond Furnace Thermostat
yellow com- blue -C or B gas valve or w-white -W fan relay or g -green -G trans 24v or R -red - R red connection to cond or Y on board -Y Hope this helps.