A great gas furnace repairing guide helps you in identifying what is wrong with the furnace based upon its signs. That's what we do here with clear, simple details.
Repairing Common Gas Heating System Issues
Every year, thousands of Calgary house owners ask, "What's wrong with my gas furnace?" If you remain in that scenario, this guide will arm you with details prior to you call a heating system business. Understanding is protection against being made the most of-- though most repair work professionals have sound ethics.
Keep in mind: This guide covers the most typical issues, specifically those most house owners can easily contact no tools or basic tools such as screwdrivers and a multimeter.
1. The Heater Won't Start
If absolutely nothing happens when the thermostat is set above the house's present temperature level, the most likely causes are these:
- The heating system switch (situated on or near the furnace, appears like a common light switch) is turned off and just needs to be switched on, though the furnace might have a brief hold-up before starting
- The breaker is off, and if the circuit continues to journey after it is turned back on, there is likely a wiring short in the furnace
- The thermostat isn't set to "heat," which is simple to examine and fix
- The thermostat isn't working, and this is often triggered by a wire coming loose, so examine the electrical wiring connections
- The thermostat needs fresh batteries, if battery-powered, or it is bad and need to be changed, an issue that can be diagnosed using an electrical multimeter that reveals if a circuit is complete
- The filter is unclean and need to be changed or cleaned, a problem that is especially real on newer heaters that are geared up to close down if the filter isn't enabling adequate air flow, a condition that can trigger serious mechanical failure
- The heater's main circuit board/control board is bad, a problem that can be diagnosed by a HEATING AND COOLING service technician is nothing else solves the issue
2. Heating System Blowing Cold Air
If the furnace won't produce heat, you can examine to see if it is getting power by moving the fan switch from the "Automobile" position to the "On" position. If the fan comes on, then the heating system is getting power. The likely issues then are:
- The gas is shut off, so inspect the gas dick near the furnace to make certain it is parallel to the gas line
- The gas control valve isn't opening and must be changed
- The ignitor is stopping working and should be replaced
- The draft motor isn't functioning or the fresh-air intake is blocked, perhaps by snow or debris, and requires to be cleared
3. The Draft Motor Runs, Heating System Will Not Start
The draft motor is also called the inducer motor. It pulls hot combustion gases through the furnace and out the exhaust stack. If it starts and then the heating system closes down, the cause might be:
- The motor or the board that manages it has actually stopped working and should be replaced
- A blocked air consumption or blocked exhaust chimney (snow, debris and bird's nests are common causes) need to be cleared
- Among the issues gone over above with gas, gas valve and ignitor should be dealt with
4. The Draft Motor Won't Start
The issue, in this case, is either that the motor is bad or the capacitor that supports it is bad. This video will assist you in troubleshooting draft motor issues and what is causing them.
5. The Flame Begins, but the Heater Shuts Down
If the burner starts making heat but soon turns off without warming your house, the flame sensing unit isn't working. If the sensor has corrosion on it, sanding it might work, though replacing it is a longer-lasting fix.
6. The Blower Won't Turn Off
If the blower motor runs all the time, there are 3 common problems:
- The fan turn on the thermostat is set to "on" instead of "vehicle".
- Relays in the control board are stuck in the closed position, so the blower furnace tune up is getting a continuous supply of electrical power, and the control panel must be changed.
- The thermostat likewise has contacts that control power to the heating system, and they can be worn, so the thermostat should be changed.
7. Why Does the Furnace Keep Turning Off?
If your heater burner lights however the heater soon shuts down, there are a couple of typical concerns that may trigger this:.
- The heater filter is dirty and should be cleaned up or replaced.
- The flame sensing unit isn't working and must be replaced.
- The thermostat is failing.
- While these prevail, there are numerous other potential causes finest detected by a furnace professional. This video offers in-depth protection to the issue of heater short-cycling.
8. The Furnace Runs but Can't Keep your house Warm.
If your heater is effectively sized for your house, then it should keep your home warm even in extreme cold. If it runs constantly however isn't offering sufficient heat, the most likely causes are:.
- A dirty filter that should be washed (only if the washable type) or changed.
- The filter is the incorrect furnace maintenance type for your furnace and limits air flow, so must be replaced.
- The filter is set up in reverse, a problem that can be examined by trying to find the arrows on the filter frame that show proper installation direction with the circulation of air.
- Air ducts are leaking, sometimes producing telltale whistling noises, and it is time to have them sealed as suggested by Energy Star.
9. The Furnace Makes Loud Noises.
A loud furnace is usually the outcome of:.
- The furnace being a single-stage model that works on high capacity all the time, so it's going to be loud.
- A bad bearing in the draft motor or the blower motor that need to be changed.
- A leakage in the heating system cabinet, sheet metal plenum or ductwork near the heating system that should be tightened.
- A dirty filter, which can also cause whistling.
10. The Heating System Leaks when A/C is Running.
Water condenses on the evaporator coil in your furnace, and if it leakages onto the floor, the problem is most likely a blocked drain pan or drain line.
11. The Air Coming from the Furnace Smells Bad.
Foul odors from the heater are usually brought on by:.
- A really unclean filter that ought to be washed, if washable, or replaced.
- A dead rodent or bird someplace in the system, usually a task for an expert heater specialist.
12. The CO Display Going Off.
A carbon monoxide alarm ought to be taken seriously. Turn the furnace off at the thermostat. Do not enter into the room where the heater is located. Open doors and windows, and go outside. Call 911 from a cellular phone outside your home.
How to Select a Gas Heater Repair Work Specialist.
Some house owners pick the most affordable repair work service in Calgary, and the outcomes are generally poor. Low-cost services are either just getting started, so lack experience or they have a bad credibility, so must offer cheap prices to get tasks.
On the other hand, some services are overpriced. The very best way to discover quality heater repair work at a fair cost is to get price quotes from several of the top heater repair work business in Calgary. Meet with each, discover their history and the experience of the specialists that will do the work. Select a skilled furnace repair professional with reasonable rates.