Honeywell Thermostat Not Turning On Heat: Causes and Solutions There are a variety of reasons why a Honeywell thermostat may not turn on the heat. A defective thermostat, a faulty heating system, power outages, damaged wiring, and so on. If your heater doesn't turn on when you want it to, see if any of these solutions help.
Check the Power Supply: First check to make sure that the power supply to the heater is good. This should be done by testing it with a multimeter set at 12 volts. If it reads lower than 12 volts, then there is a problem with the supply itself. Call a technician to repair it.
Make Sure the Heater Is Getting Power: Next, verify that the heater is getting power by using an electrical tester. If it isn't getting power, then there is a problem with the wiring from the breaker box to this location. Have a professional electrician check all the wiring in your house for damage.
Try Unplugging/Plugging In The Heater Remotely: Last, try unplugging and plugging in the remote control for the heater. Some models need to be powered up before they will work again, while others work just fine without being powered up first. If the problem still exists after trying each of these steps, then call a professional heating contractor to inspect your system.
At times, your Honeywell thermostat may fail to switch on your air conditioner. The simplest solution is to reset your thermostat. Replace your batteries, inspect your wiring, and clean the air filter linked with your Honeywell Thermostat are all popular techniques. If none of these solutions work, call a professional.
Check for a tripped breaker or a blown fuse if your heater isn't operating at all. If required, reset the breaker or replace the blown fuse. Remove the heating control knob, thermostat knob, and faceplate to inspect these mechanisms for loose connections. Tighten any stray wires. Try your heater again.
Most heating systems are programmed to switch on and off based on the temperature set by a thermostat. The thermostat isn't working properly. The wiring from the thermostat to the heating system is faulty. The heat system's relay and control board have failed or become intermittent. It may be time for an upgrade. The heater will continue to run at full power until it is turned off by another device. If this keeps happening, call your local HVAC technician.
Heating systems use two types of controls: a pilot light and a magnetic switch. The pilot light uses hot air to ignite a fuel-air mixture that burns continuously without being turned on or off by a person. Most central air conditioners and heat pumps are of this type. Magnetic switches are activated by metal objects placed in contact with them. These objects can be fingers pressed against a wall or floor panel while walking through a room, for example, or magnets attached to keys inside a door. When exposed to a magnetic field, the magnet triggers the switch which connects electricity to the heater. Other types of controls include capacitive sensors and infrared detectors. Some systems have several different methods of control combined into one unit. For example, an alternating current (AC) system may have a magnetic switch and a pilot light both connected to the same circuit. When the circuit is complete, the heater will turn on; when the circuit is open, the heater will turn off.
One of two things will happen if the thermostat fails. The engine either overheats or remains so cool that the heater does not operate. Fortunately, there is a technique to test the thermostat to see whether it has failed without having to replace it first. Remove the air filter and look at the underside of the engine. You should find three parts under the carpet on the floorboard: the heater hose, the drain pipe, and the thermister. If any of these components are damaged or leaking, the car will not be able to maintain the desired temperature. Have your mechanic check them all for damage when he performs your maintenance schedule.
If you own a 1990 or newer vehicle, then the heater hose should be red in color. If it is white or blue, then the thermostat malfunction has most likely occurred. The thermister is a thin piece of metal with hair-like fibers attached to one side. It fits into a hole in the engine block and acts as an indicator of how hot the engine is getting. If the thermister breaks off from the engine block, then it is time to replace the thermostat. The drain pipe is used to release water from the heater core when you turn off the car engine. This prevents the engine from flooding when you get out of your car in cold weather.
There are a few possible causes for your heating system not turning off: A faulty thermostat: A broken thermostat is usually repairable. Depending on the severity of the problem, faulty wiring, a damaged switch, or a broken heating sensor can be repaired. If the thermostat is not working properly, have it replaced under the warranty. A tripped circuit breaker: Check the breakers in both the furnace and the heat pump. If they are all clear, call an electrician. A closed valve: Check all valves (if you use one-way valves) on the water heater to make sure they are open. A closed valve can cause the water heater to run continuously. A clogged drain pipe: This should be checked by a plumber.