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I am installing a honeywell RTH111 thermostat. The old
I am installing a honeywell RTH111 thermostat. The old thermostathas only 2 wires with no letter designation on either of the two screws. do I just install the un-identified wires on R and W of the ne… read more
Phil
Phil
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Degree, Mech Engr Technology
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Ihave a 15 year old trane thermostat I am replacing.I
ihave a 15 year old trane thermostat I am replacing.I purchased a Honeywell rth111 to replace it with.I am not sure about the wiring of the new one.Can you help … read more
BillyHvac
BillyHvac
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I want to put a Honeywell non-programmable rth111 series and
I want to put a Honeywell non-programmable rth111 series and to old one only has two wires a white and black where do the two wires go … read more
gotoman for ac
gotoman for ac
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I have a new Honeywell model RTH111 thermostart that I am
I have a new Honeywell model RTH111 thermostart that I am connecting to a two wire boiler . A red and yellow wire coming from the furnace. What terminals do I connect the yellow and red wire to on the… read more
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Changing from old janitors HPT 18-60 to a Honeywell RTH111 and the labels for the old do not match up for the new...can you help? … read more
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Help... trying to replace a trane weathertron with a
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Connections pump. connected red wire to R, wire to W, yellow
connections for heat pump. connected red wire to R, white wire to W, yellow wire to Y and green wire to G. There is either a gray or black wire. Do not know where this goes.… read more
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I installed a Honeywell Thermostat model RTH111 1016 in my
I installed a Honeywell Thermostat model RTH111 B 1016 in my house. When I turn the A/C on the compressor immediately starts and will stay on until I switch the A/C off. The thermostat does not seem t… read more
BillyHvac
BillyHvac
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Have an old GE thermostat with B, C, Y, G, R, W (all 6 wires
Have an old GE thermostat with B, C, Y, G, R, W (all 6 wires were connected). Bought a new Honeywell RTH111 and was told by Honeywell that it was compatible and to only connect 5 wires B, G, Y, W, R (… read more
BillyHvac
BillyHvac
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I have a RTH111 Honeywell thermostat I just purchaced from
I have a RTH111 Honeywell thermostat I just purchaced from Home Depot. My old mercury filled thermostat(it also has a bi-metal coil for rom temperature) only has two wires and they have no labels on t… read more
Rick
Rick
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I got old gas heating sistems. my old thermostat was connected
I got old gas heating sistems. my old thermostat was connected only 2 wires. I bougt nonprogram thermostat Honeywell rth111. can I connect this one used only 2 wires?… read more
gotoman for ac
gotoman for ac
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I have a honeywell RTH111 thermostat, I switched from a ritetemp
I have a honeywell RTH111 thermostat, I switched from a ritetemp thermostat. The wires coming out of the furnace are red, white, green, and light blue. I connected the red to rh, the white to W, the g… read more
Tim H.
Tim H.
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i just purchased a honeywell non programmable thermostat model
i just purchased a honeywell non programmable thermostat model rth111. ineed to connect it to a relay box for my radiant floor heat. i need help connecting the wires. the relay box has four terminals … read more
Richard
Richard
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i bought the Rth111/rth221 programmable thermostat and the
i bought the Rth111/rth221 programmable thermostat and the old thermostat is a two wire my issue is the furnace is a fes 90-45 90,000 input the red led is connected to open and the green wire is conne… read more
gotoman for ac
gotoman for ac
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I am trying to replace a intertherm thermos tat (round in shape
I am trying to replace a intertherm thermos tat (round in shape and controls both air and heat) with a honeywell digital model RTH111/RTH221. I have connected the Y, R and W connections. ( the R is co… read more
Rick Mather
Rick Mather
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Vocational, Technical or Trade Scho
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Bought house, Trane XV80 Model#TUDO8OR9V3H6, Ser# XXXXX
Bought house, Trane XV80 Model#TUDO8OR9V3H6, Ser# XXXXX Had corroded ignitor control circuit board, replaced ckt board, matching wiring from old ckt board to new and dip switch settings. When cooling … read more
Rick Mather
Rick Mather
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Vocational, Technical or Trade Scho
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I bought a Honeywell RTH111 and have just 2 wires. What terminals
I bought a Honeywell RTH111 and have just 2 wires. What terminals do I attach these two wires? I have a williams milivolt gravity gas furnace… read more
Mark Henley
Mark Henley
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my tappan model 80d 36 e7 does not follow the thermostat program.
my tappan model 80d 36 e7 does not follow the thermostat program. When it comes on it goes all the way up to 90 degrees when I have it set for 75 and it does not shut off for a while. Then when it doe… read more
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Meet the Experts:

Phil

Phil

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7,791 satisfied customers

Retired HVAC/ Electrical & Boiler contractor. Industrial

Rick Mather

Rick Mather

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Matthew

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Brian HVAC Guy

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Kenton Guidry

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Rick Ridley

Rick Ridley

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Retired But have had 30 years on the tools, Ex CORGI

Tom

Tom

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16+yrs HVAC/R service. Residential Commerical Industrial

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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