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How do I change the temperature range on a Honeywell TH8110u1003 thermostat. The range now won't let me go below 77 in AC mode.

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Try adjusting the heat range up. Set it a 77 then try the cool.
I believe the Honeywells have a max range between cool and heat.
also sometimes there is a lock out code on them you'll need the book.
Good luck

Posted on May 20, 2008

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Posted on Jan 02, 2017

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I have a 9610 thermostat turns on and off to frequently


I am guessing but the thermostat is either faulty or is in conflict with another thermostatic device in the system. The room thermostat measures the air temperature in the room but with a modern intelligent boiler there will be other sensors measuring all sorts of things including the water temperature.

Personally I prefer to have thermostatic radiator valves rather than a room or zone thermostat.

Jan 02, 2017 | Heating & Cooling

1 Answer

I HAVE A MODEL HOE-HT-L2 THE INSRTUCTIONS ARE NOT CLEAR AS TO SET THE TEMP CONTROLS


Greeting Cyril Hrachovy,

"Say" 22 is an example... You should input whatever temperature where you are comfortable ...

Our master bed room has it's own controls... but usually the vents have been blocked shut... or have magnetic diverters (plastic shields) on the vents... where the thermostat is all warm & happy across the room while I'm freezing against the glass...

A happy medium has to be struck
- between the IVORY-TOWER instruction writer... and
the sun soaked rain drenched REAL WORLD in which
we live (I'm just saying).

Programmable THERMOSTATS are get (fun)... but in reality
the automatic features are soon abandoned... (harmony)
and the REMOTE favors the fickle.

Carnac the Magnificent

Jan 01, 2017 | Heating & Cooling

1 Answer

I need to know if a mercury thermostat is bad will it allow the ac to come on but not the heater


need to know what thermostat you are referring to
the coolant thermostat has no connection to the ac system
if it is the ac thermostat the it maintains the cabin temperature by activating the ac compressor as required
if you are referring to climate control then that controls the heater flow to keep the ac temperature at a set temperature with the ac compressor operating all the time
so as an answer to you question , check the climate control module

Dec 30, 2016 | Heating & Cooling

2 Answers

My thermostat is set on 68 degrees and it shows room temperature is 68, but the furnace still kickson, Honeywell said it has a 1 degree difference. so what's the problem then?


Yes there is a one degree tolerance, in fact my heater just kicked on and it is set to 67 and the inside temperature reads 67. It is also a Honeywell.

Dec 28, 2016 | Heating & Cooling

1 Answer

On a Lasco tower heater how to change the temp


This is normal. The unit is displaying ROom temperatures by default. Lots of didital thermostats operate this way.

Jan 11, 2015 | Heating & Cooling

1 Answer

How do I get my radiators to start working?


ch1 indicates wirless thermostats? check the thermostats in the room have fresh batteries. this type can be wired but may be running on batteries you have to use a screw driver from below to open the unit. if you dont have a manual here is a link.
http://www.manualslib.com/products/Danfoss-Randall-Tp5000-Si-Range-2781091.html
i hope this helped

Oct 22, 2014 | Heating & Cooling

1 Answer

My termost set to a/c, the fan auto, blow very well, but when I switch to heat and the fan auto, doesn't work, but if I put fan on work why?


the thermostat says to call for heat buildup in the work if its not cold enough the thermostat won't call for heat and I won't go on but when it gets cold and the thermostat set to the temperature you want or hire someone that doesn't cycle

Oct 12, 2014 | Heating & Cooling

1 Answer

Why can't I lower my honeywell 8500 below 67 on cool?


With a two story house you have to be aware that cold air flows downwards so any cold air coming from an ac unit will flow downstairs( normally down the stairway) so unless you can close off the down stairs then the up stairs unit will be cooling downstairs as well. Ac units have a thermostat located in the air intake and it cools until the cold air has risen to that point. In effect the space above the ac unit will be hotter than the floor. Knowing how they work ,you can see that the upstairs unit will never reach the set temperature because the cold air is continually heating from the house and will never get to the top thermostat.
So your solutions are
1-- fit controls that restrict the cold air from leaving the upper floor (Doors)
2--don't run the upper ac unit unless you are living up there (waste of money
)3 place an ac in each upper room and keep the room door closed

Aug 12, 2014 | Heating & Cooling

2 Answers

Flashing re co


Re Co stands for Recovery Mode. That means if you have programed your thermostat to be at say 72° at 5:00 then it should kick on in Recovery Mode several minutes before 5 in order to reach that temperature. This is normal and doesn't indicate that something is wrong, just that your thermostat is trying to reach or recover the programed temperature.

Feb 08, 2008 | Heating & Cooling

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