Why is My Honeywell Thermostat not Working?

Thermostats by Honeywell are a popular choice to regulate and maintain a normal comfy temperature of any physical system. Whenever your home or work environment drops or rises above a certain point, the automatich eat pumps or air conditioning system trigger to control the temperature of the system.

What if your Honeywell thermostat is unable to maintain the heat setting? This blog will help you to find out potential causes for Honeywell thermostat not working problem.

No matter what sophisticated components forms your Honeywell thermostat machine, several issues might take place with its regular application. So how to deal with those working issues? Generally, the thermostat has an LCD display which gives an indication about the type of working issues occurring with the machine.

Why is Honeywell Thermostat Unable to Hold Temperatures?

Your house getting colder than what you have set is the main indication that the Honeywell thermostat is recording the wrong temperature. You might also notice that the screen of Honeywell Thermostat blinks when the heat turns ON, or when the thermostat device is frequently powering ON or OFF more than what it should ideally.

Why is Honeywell Thermostat Unable to Maintain a Heat Setting?

The overall functionality of Honeywell thermostat starts malfunctioning when it stops reading and recording temperatures of any physical system. This error is usually indicated with a blank and unresponsive screen or flashing screen.

This problem straightaway means that your Honeywell thermostat batteries are dying which should be immediately replaced in order to deal with the error. Replacing thermostat batteries might help in dealing with the unresponsive thermostat machine.

Sometimes, it might happen that the thermostat wires are loosely or poorly connected to the machine. Refer the user manual of Honeywell thermostat, and check the wire connections from your thermostat terminals.

When the Honeywell thermostat not working, the mercury switch inside it records incorrect temperature readings. In such a case, it is noticed that heating or air conditioning turns on or off more frequently than it should actually.

Dirt or debris within the Honeywell thermostat is another cause for various problems inside the thermostat. Whenever your Honeywell thermostat not working, check the inside machine behind the cover and clean it if there exists kind of dirt or another type of particles.

If there are no such problems with your thermostat and it is working totally fine, then the problem might be existing with the thermostat sensor. The sensor has a delicate lining which might have broken resulting which the Honeywell thermostat is noting incorrect readings of the complete room or system.

Why Honeywell Thermostat Display Shows Nothing?

Modern Honeywell thermostats have an LCD display which is more sophisticated than the analog type Thermostats. Users commonly find that these digital Honeywell thermostats have nothing on their screen.

What are the Possible Reasons?

• The access door on the furnace is not properly closed, or fully shut. The modern furnaces have a door switch which engages only when the door is closed properly, thereby activating the whole heating/cooling system. Else it cuts power to the thermostat device.
• Thermostat batteries might be dead. In such a case, replace those batteries with the new ones. Most thermostats nowadays are equipped with batteries creating timely alerts in the form of on-screen messages when the replacement is required.
• The circuit breaker system for the furnace or air conditioner may have tripped. Honeywell Thermostats have a dedicated circuit for each, so if the air conditioner or furnace aren't working, their circuit breaker has tripped. Turn the breaker switch to OFF position and then to ON position again.

Why does Honeywell Thermostat Fail to Operate Correctly?

If your thermostat shows active but is unable to set and control the temperatures as you want. There can be the Following Causes:

• Small colored wires connecting the inside components of Honeywell Thermostat might be incorrectly installed or might be disconnected. If so the Honeywell Thermostat not working. The low-voltage wires often disconnect by themselves. Refer to the color coding schemes to reinstall the loose wire configurations correctly.
• Time-of-day and day-of-week clock might be incorrectly configured. The internal clock might have lost its settings after power cuts. In such a case when the Honeywell Thermostat loses power, the internal battery is meant to hold the clock settings. Ensure that the clock is set to the right day and time. In electronic programmable thermostats, wrong day and time settings prevent the system from working correctly.
• Jumper settings might be incorrectly done. Remove the cover to check whether the jumper settings are not. In some Honeywell thermostat models, the jumper settings are specific to the type of furnace, air conditioner or heat pump used by the system.

Why is Honeywell Thermostat Furnace or Air Conditioner not working?

In a few cases, it might be possible that the problems exist with the furnace and air conditioner unit and not with the Honeywell thermostat device.

How to Evaluate the Problems, Check Below:

• Check that the Honeywell Thermostat is in COOL mode or not by pressing the SYSTEM button. Set the lowest temperature with the fan set to AUTO. Wait for five minutes, and check for the cooling.
• Do the same process for heat with the fan set to AUTO. Continuously press the system button until HEAT appears on the screen and configure the heat setting to the highest temperature. Again wait for 5 minutes to see the results.  
• If any of these actions fail to execute, then the problem is likely to exist with the furnace, heat pump or air conditioner, not with the Honeywell Thermostat.