How to Reset Honeywell Thermostat Old Model that Uses Battery Power

Honeywell is a brand of thermostat that is reputable, reliable, and trustworthy. However, even the best-built technologies sometimes require a repair or reset process, especially if the model has already been used for several decades.

If you detect something wrong with your home temperature system, you may need to check how to reset the old Honeywell thermostat model below.

How to Reset Honeywell Thermostat Old Model

Having existed in the business for over a century, Honeywell has developed many thermostat models. The brand has become a ubiquitous name for dial thermostats, even if other companies produced them.

Now, if you have an old Honeywell thermostat that has been around for at least 20 to 30 years, the resetting method applicable for modern models won’t work for it. In fact, your thermostat is most likely to run on analog or battery power. It also usually doesn’t have a reset button like newer models.

To determine how to reset the Honeywell thermostat model, you need to check the series model first. It’s usually written on the product packaging or at the back. If you need to locate the number of products on its back, then lift the thermostat carefully from the walls. It usually doesn’t require you to use any tool.

Here are the steps on how to reset the Honeywell thermostat with no reset button but with battery power:

1. Turn off the thermostat and then lift off the batteries
2. Reverse the battery’s position, so the positive would be placed in the negative and vice versa.
3. Wait for several seconds and then put the position back correctly
4. The Honeywell thermostat will be reset, and enter the factory reset mode.
5. Reprogram the thermostat back to your normal setup

In addition, if you’re dealing with a programmable Honeywell thermostat, here’s a useful tip:

“For models like the Honeywell 1000 and 2000 series, you may need to press and hold the menu button to access the installer options or restore factory defaults. In some cases, you might need to enter the date code found on the back of the thermostat.”

This aligns with my personal experience resetting various models over the years.

Keep in mind that not all older models of Honeywell thermostat use batteries. In this case, you need to reach your home’s electrical system. Switching the power on the circuit breaker off is A faster way to reset your home heating and cooling system. The thermostat will reset after you turn it on back.

Read also: White-Rodgers Thermostat Resets

If the guide above and a reset process won’t work to solve your home heating system problem, then it may be the right time to upgrade. You can choose to change to a programmable thermostat that has existed for some time now.

A programmable thermostat is a more modern option that helps keep a regular temperature setting schedule reset, with more advanced control using the technology it comes with.

An even more modern and sensible option is to choose a smart thermostat. This product gives most home heating systems maximum control and greater benefits compared to analog or programmable thermostats. However, if you still want to retain your current heating system, you may try the guide on how to reset the Honeywell thermostat’s old model above.

The process might differ slightly for those with specific models like the Honeywell 1000 and 2000 series or the 6000WF series. Typically, you would need to press and hold the menu button to access the installer options or restore factory defaults. Sometimes, you might need to enter the date code found on the back of the thermostat. For the T5, T5+, and T6 models, the process involves navigating through the menu to find the reset options.

It’s important to note that resetting your thermostat can erase all your programmed settings. Therefore, it’s advisable only to perform a reset when necessary and ensure you have your settings noted down somewhere, so you can easily reprogram your thermostat afterwards.

Table of Reset Methods