If your home feels too hot or too cold for the temperature displayed on the screen, there could be a broken or malfunctioning temperature sensor. Move the anticipator in small increments. This could also be the cause of a loose or poorly attached wire. If your thermostat uses the home electrical system, you should check on the circuit breakers. If your thermostat is old and not working as it used to, just replace it. When the door is shut, the latch takes a position to close the circuit and provide power supply for the rest of the thermostat. What are you experiencing? Use a thermometer to measure the temperature where the thermostat is located. The letters and numbers on your thermostat’s digital display should be clear and easy to read, never blurred, faded, or flashing in … Loose or missing wire connections, and faulty or aged wires can cause your thermostat to lose its connection to your heating and cooling systems, thereby causing an interruption in service. Documentation. You can also check if your thermostat has any guided assistance written on the inside of the cover. If this doesn’t work, then the issue with the thermostat could come from loose connections or other wiring problems. Temperature does not change according to the programmed schedule. I have 2 HVAC units and each is zoned into 2 zones so I have a total of 4 zones and currently have 4 Honeywell Vision Pro 8000 Wifi thermostats in a rack room with 4 wired sensors throughout the house. If your thermostat is blank, the first probable cause you should check is whether the batteries in the unit need to be changed. 100% Upvoted. Measure the “Line side” voltage coming from the breaker panel at the control and test from “L1” to “L2.” Check all connections between the breaker […] New comments cannot be posted and votes cannot be cast. Step 4 – A Unit with a Short Fuse and Honeywell Thermostat Blank Screen. One of them might have tripped and cut off the power the thermostat. report. There are various reasons this could be the case, including if the machine is not properly adjusted. The completely redesigned interface will ensure the right temperature and humidity level for any home and provide powerful flexibility that will maximize Control4 will replace or repair Warranty any defective unit. Reset the breaker. COLD – This means your thermostat is cooling correctly, but the heating isn't working properly. Dirt in the AC thermostat is one of the most common causes of problems, so a good troubleshooting method is to just clean the thermostat. A Honeywell thermostat may be malfunctioning generally, and this is the cause of its inability to hold temperature. In some cases, the Honeywell thermostat display turns on and off frequently. As with all electronic or mechanical equipment, the thermostat will work worse the older it gets. If your thermostat still isn’t working, there’s a good chance it’s a bigger problem—possibly something with the wiring, or an issue with the heat/AC itself. The most common causes of it are: The unit’s door is not closed properly. The thermostat does not seem to be doing anything. Continue to the Thermostat Wiring section. If this is the case, or if there's buildup in your ductwork, it's possible that you wouldn't feel any heat or air conditioning even if it's being produced. This thread is archived. Under normal operation, the thermostat housing may reach a temperature between 95°F (35°C) and 104°F (40°C). They may have run out of charge to power the thermostat. To adjust the anticipator, remove the thermostat cover and look for a scale with the word “longer” on it and an arrow. The problem is that the server is required for you to make any and every change to the unit. Contact Support at 1-855-733-5465 to find a pro-installer in your area. 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