3 Ways To Fix Honeywell RTH110B Not Working

honeywell rth110b not working
honeywell rth110b not working

The Honeywell products can make it easier for customers to manage their HVAC system. There are different models of thermostats that can be connected to your heating or cooling system. One of the most well-known products from Honeywell is the RTH 110B that is a digital thermostat known for its reliability.

However, sometimes even the most reliable devices can malfunction. A few users have mentioned that they are unable to use the device, if you’re in the same boat and the Honeywell RTH110B is not working for you then try following these methods.

How to Fix Honeywell RTH110B Not Working?

  1. Install New Batteries

It is very common to see customers complaining about the issues with the display not working on their Honeywell thermostat.

Usually, this problem is related to dead batteries and you will just need to install new batteries to fix the display. You need to use the non-rechargeable alkaline batteries with your Honeywell thermostat.

Using rechargeable batteries can create problems for your device so make sure to only install the compatible batteries in the thermostat.  If the batteries are new then it is probable that the contact points are dirty.

You will need to clean the contact points so that there the power from the batteries can easily flow into the circuit.

A lot of customers have mentioned that cleaning the contact points with rubbing alcohol fixed the thermostat for them. So, before moving on to other troubleshooting steps, you should try cleaning the contact points on the Honeywell RTH110 and that should fix the display problem for you.

  1. Check Wiring

The digital thermostat won’t work with your HVAC system if you have not installed it correctly. There are detailed instructions available on the owner’s manual regarding how you should be connecting the thermostat with your HVAC system.

So, if the cooling or heating system is not working then it is likely that you messed up with the wiring.

You will need to go over the owner’s manual again to fix the wiring and your HVAC system will start working properly after that. If you believe that the wiring is done correctly then check the breakers on your HVAC system and see if there is any physical damage to the wires connected with the HVAC system.

  1. Ask Honeywell

If you’re still unable to fix your digital thermostat then try calling Honeywell support. Tell them about the specific error that you’re running into.

Depending upon your situation, the support members will provide you with a few troubleshooting steps that can help fix the issue that you’re having with the Honeywell RTH110B thermostat. You can use the company number or Email to reach out to Honeywell regarding this issue.

However, most of the issues reported by customers were related to the battery. So, make sure to install the new battery in your thermostat and clean the connection points to fix the device.

Hopefully, you won’t have to try any other method and the thermostat will start working perfectly after replacing the batteries. Keep in mind that you need to install non-rechargeable batteries in your digital thermostat to avoid further issues.

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