honeywell thermostat says aux heat on but not working

So you have the basics up front I have a Honeywell TH5320U1001 thermostat and a Nordyne B6VMAX24K - B variable fan speed heat pump. If the cool on or the snowflake icon.

Heat Won T Turn Off Thermostat Repair Faqs

The tech says that when he bypasses the EIM he can get the aux heat to come on.

. If your heat still isnt working find a rel. But the aux heat does not engage. Thats why checking the batteries and changing them might help.

If you set your relative humidity to somewhere between 30 and 50 percent your home should be comfortable all year round without the need to change the setting on your thermostat. I set up the wires as suchX2 and W into the auxe ter. Thermostat batteries last for an average of 10 months so it is easy to tell when dead batteries are the culprit.

I had this same issue and it turned out to be a simple configuration change. The first step to fixing your thermostats heat setting is to press the Up arrow and the button which says Switch to Permanent Hold This will manually change the setting of your thermostat to a higher temperature than the outdoors. Set the temperature between 60 and 80 degrees Fahrenheit to keep the house at a consistent temperature and avoid using auxiliary heat.

Verify that the thermostat is switched to cool mode and has a cooling set point below the room temperature reading. Here are the steps. Attached schematic is the way the system is wired.

Vocational Technical or Trade Scho. Warmer than 20 F-40. It is best to maintain the temperature under eighty degrees to keep your Honeywell thermostat from switching to auxiliary heat.

Setting the thermostat for. When the temperature inside your home drops three or more degrees below your set limit your thermostat will kickstart the auxiliary heat. The easiest way to stop the auxiliary heat from coming on is making sure the temperature doesnt drop too fast.

If your Honeywell thermostat is not working and there is no display we recommend you work through the following troubleshooting steps. Aux heat isnt ON. Your thermostat plays a big part in determining when auxiliary heat is activated.

If your digital thermostat isnt working so your heat or ac isnt turning on. If your thermostat is newly installed and the heat pump worked for cooling with the previous thermostat check the following. This can happen for many reasons.

It might be a very simple solution. For instance if you have a malfunctioned thermostat it may display aux ON even when auxiliary heating is not on. It may seem like it isnt much you can do when your Honeywell thermostat says the auxiliary heat is on or any other model thermostat.

This type of heating is also activated if your heat pump becomes covered in ice or snow. Old wires were x2 w y b r o g and T. Another possible reason your auxiliary heat isnt turning on is that the thermostat cant properly read whats going on with your heating system.

Sometimes a Honeywell thermostat can bounce back after a power outage without requiring a reset. Make sure that the thermostat undergoes regular maintenance. The first thing you should consider is that perhaps the auxiliary heat source isnt ON.

Check the thermostat is set to heat and see if the Heat On button is blinking. If thats not the case then try the following steps. Between 10 and 20 F-35.

Honeywell VisionPro IAQ TH9421C1004 with EIM and the outdoor temp sensor. The initial setup assumes theres only a cooling system so I needed to use the Advanced Setup menu to add it in. Questions Answered Every 9 Seconds.

As you can see this is my first post here. Check the thermostats display to confirm that theres a call for cooling usually indicated by the words cool on or a snowflake icon. Taking proper care of your HVAC system can also help.

A blinking Cool On message can appear due to dying batteries a power surge or a power outage. Check the thermostat is set to heat and see if the Heat On button is. For troubleshooting the.

Emergency heat is for just what it says. Use the setting of 50 or 60 to increase the humidity in your home. Answer 1 of 5.

On the many options select the reset. Turn the thermostat up just two degrees at a time to avoid using the auxiliary heat. If you set your Honeywell thermostat to 70 degrees you can easily turn off the auxiliary heat.

Verify that the thermostat is set to cool and is calling for cooling usually indicated by the words cool on a snowflake icon or a shimmering snowflake icon. As far as Im aware my system does not have an outdoor temperature sensor though Im not entirely sure where it would be. Many heat pump systems will also have an emergency heat setting.

If the sensor is faulty then your HVAC system wont know that it needs to activate. Sometimes a low battery could be why the thermostat is not cooling even after you instruct it. If the temperatures are extremely frigid outside even this may be too much for your unit.

To Sum Up. Its also my first winter in this house. But thats just an overview of stopping AUX heat from coming on.

The first step will be to see if your thermostat is powered properly. If the display of your thermostat is not on or is fading your device might be losing power or not getting power at all. New is Honeywell RTH6500WF thermostat.

The thermostat controls a single stage heating and cooling air to water heat pump that is 30 years old. Remember that the display on the thermostat an LED. To change the batteries you only need to press the side of the.

Now you know why your thermostats display might be showing heat on when in reality there is no heat. Click the menu at the bottom of. Auxiliary heat means the secondary system works in conjunction with the heat pump to supplement as needed.

Temperature sensors inside the HVAC unit determine when the outside unit should turn on. You can do that by adding more insulation to your home and closing doors to rooms you arent using. Reasons your Honeywell thermostat says heat on but no heat.

If the room temperature is below the cool set. He says it is an EIM problem but the EIM is brand new. Ad A Technician Will Answer You Now.

You are asking your HVAC system to work too hard to maintain a comfortable temperature. I replaced an old mercury switch thermostat with a new Honeywell RTH6580WF and connected the wires according to the heat pump directions in the Honeywell manual. Change the filter and batteries.

The low battery usually has enough power to power on the thermostat but does not ensure cooling. Evenly distribute the temperature in your house and improve your insulation can help to prevent an auxiliary heat.

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