Honeywell Thermostat Problem. Discussion in 'Home Repair' started by Achattaway, Dec 3, 2005. Achattaway Guest. When I turn the dial to set the heat temp I want for. Honeywell Thermostat Chronotherm IV Plus Battery Problem. Honeywell Chronotherm T8082- 12V-30V W/ Single Mercury Switch-Thermostat VICNASTY1989. Unsubscribe from VICNASTY1989? I have a Chronotherm IV on a heat pump. It may be similar to the III. The IV has a programmable fan. It can be set to shut off when the heating or cooling cycle is finished, or it can be set to shut off 90.

• Honeywell Chronotherm Iv Plus Reset
• Honeywell Chronotherm Iii Manual

I possess three temperature areas in my house, two upstairs ánd oné in th basement. I recently improved my older mercury Honeywell thérmostat upstairs to á digital kind CT8775A. They are connected to Honeywel motorized valves at the boiler, type Sixth is v8043E1012. When I installed the thermostats I had been cautious to chart the wires an everything appeared great, the electronic display came up, the area temp wa supervised and the backlight was working good. However, now that I a beginning to need the warmth the problem occurs. When the room will be abov the temp of the thermostat establishing everything is certainly great and the displa works. When I raise the temp environment on the thermostat to switch th heating on, and after the furnace has fired up, the display will go blank the backlight doesn'capital t function but the heater proceeds to burn off.

When th furnace switches off afet a few of mins the screen reappears only to disappear once again. I have got tested the wires cable connections at the boiler and béhind th thermostat ánd they are all good. I have personally overridden the valv and tested the motor which seems to spin and rewrite up OK. I don't understand where t look next. Offers anyone else had the same issue or can anyoné sugges what thé issue might be.

I have three high temperature specific zones in my home, two upstairs ánd one in thé cellar. I lately improved my old mercury Honeywell thérmostats upstairs to á digital type CT8775A. They are connected to Honeywell mechanized valves at the boiler, type Sixth is v8043E1012. When I set up the thermostats I has been cautious to chart the wires and everything appeared good, the digital display arrived up, the space temp has been monitored and the backlight was working great. However, now that I feel starting to need the warmth the issue occurs. When the space is above the temp of the thermostat setting everything is certainly fine and the screen functions.

When I raise the temp environment on the thermostat to convert the heating on, and after the heater has terminated up, the screen will go blank, the backlight doesn'capital t work but the heater continues to burn. When the furnace fuses off afet a few of minutes the screen reappears, only to vanish once again. I possess tested the wires connections at the central heating boiler and behind thé thermostat and théy are usually all great. I have personally overridden the control device and examined the motor which seems to spin up OK. I don't understand where to look next. Offers anyone else acquired the same problem or can anyone suggest what the issue might become?

Thanks for the response so much. I possess examined out the using a recommended: The wiring directions for the thermostat perform not show requirement for a floor at the terminaIs, and it will not need battery. Fallout 4 mod load order. An identical thermostat device set up on the bed room area i functioning correctly. The transformer is usually ranked at 24V so that ratin should be fine with these thermostats. I possess been checking excatl what seems to be taking place: The screen will be on and displaying the curren space temperature. When I change the dial tó set the high temperature temperature I desire fo the space the flame symbol seems and a several moments later on the furnac fire up. After a short period of time the heater cuts off, and afte another short time period the control device closes.

When the device shuts, that we when the screen shuts off. Several minutes later the screen come back again on the device has reopened, the space is not however at the requeste heat range, and the furnace may shoot up again. After a short perio of period again when the valve shuts the display disappears once again.

Thi continues until either I switch the necessary setting to below th current room temp, or when the space gets to the high temperature setting. Tried changing the top cell from the bedroom area, and the exact same slim happens. I are attempting to figure out whether the problem lies with the valv which can be a few years outdated (not really sure quite how older), or whether there is usually problem with the thérmostat before I go to the expenditure of changing one o the some other. Your suggestions are nearly all welcome. Thanks a lot for the replies so significantly. I have got checked out the pursuing as suggested: The wires directions for the thermostat perform not display a necessity for a floor at the terminaIs, and it does not need a electric battery.

An identical thermostat device set up on the bed room zone is working properly. The transformer is ranked at 24V therefore that rating should be good with these thermostats. I have got been checking excatly what seems to become taking place: The screen will be on and displaying the current room temperatures. When I switch the dial tó set the heat temp I desire for the area the fire symbol shows up and a few moments later on the furnace fire up. After a brief period of time the heater cuts off, and after another short time period the valve shuts. When the control device shuts, that is definitely when the screen turns off.

Several minutes later on the screen comes back again on the device offers reopened, the space is not really however at the required temp, and the furnace may open fire up again. After a short time period of time once again when the control device shuts the screen disappears again. This continues until either I change the necessary setting to below the present room temperatures, or when the room gets to the high temperature setting. I tried swapping the front side cell from the bedroom area, and the same thing occurs.

I are attempting to determine whether the mistake is situated with the device which is certainly a several years aged (not sure very how aged), or whether there is a problem with the thérmostat before I proceed to the cost of changing one or the various other. Your suggestions are most encouraged. If you eliminate the stat and touch the two wires together, does the control device open and circulator work?

The central heating boiler gained't necessarily begin as it may currently be at high limitation. If factors run correctly by touching the cables collectively, and since you say you've currently changed the thérmostat with another, l would end up being looking for a fragile transformer powering the zone valve(beds). There may end up being one or various.

You require to discover them and appear for the wattage (VA) Standard heating transformers are 40 Veterans administration, but sometimes area valves are usually run by the transformér in a changing exchange or aquastat exchange. Click on to increase.This is usually Turtle. I observe you adjusted me on the working of surface on the thérmostat as a common and not a floor.

Honeywell Chronotherm Iv Plus Reset

Well slick the cable that I called a Floor results in the thermostat and will go to the common aspect of the 24 volt transformer and then RIGHT More than TO THE Body 0F THE FURENACE T0 A Surface LUG. So now clever what can be it a Floor or a Common.

Now after aIl this correcting óf myself you did nothing at all for the poster but tell him a collection of bullshit to think about. He do not wish to listen to all this buIlshit from yóu but what was wrong with it to obtain it best and you do not reply to anything for him but adjusted me out of a flame war over at alt.hvac. Keep the Fire CORRECTING back again at alt.hvac!

Honeywell Chronotherm Iii Manual

This is certainly Turtle. I discover you adjusted me on the functioning of ground on the thérmostat as a typical and not a floor. Well slick the wire that I known as a Surface results in the thermostat and will go to the common part of the 24 volt transformer and after that RIGHT More than TO THE FRAME 0F THE FURENACE T0 A Terrain LUG. Therefore now advanced what is definitely it a Ground or a Typical. Now after aIl this correcting óf myself you did nothing at all for the poster but tell him a number of bullshit to think about. He did not would like to listen to all this buIlshit from yóu but what has been wrong with it to get it right and you do not respond to anything for him but corrected me out of a fire battle over at alt.hvac. Depart the Flame CORRECTING back again at alt.hvac!

Click to expand.I have got a Chronotherm 4 on a temperature pump motor. It may end up being comparable to the III. The 4 has a programmable fan. It can be set to close off when the heating system or air conditioning cycle is definitely completed, or it can be set to shut off 90 mere seconds after the heating or air conditioning cycle can be completed. The 90 2nd option will be supposedly more effective because the residual temperature/cool in the ducts is certainly delivered into the lifestyle area. In my case, with a variable speed enthusiast, after a period surface finishes the lover goes to about half swiftness for 90 secs before closing off.

Does yours work like that? Getting into the programming mode is usually a little bit complicated without the 'Set up Guidelines'. Try heading to the Honeywell site and appear for a downIoad.

In my case the pamphlet is usually 69-0936-1.