A good gas heater fixing guide helps you in determining what is wrong with the heater based upon its symptoms. That's what we do here with clear, uncomplicated details.
Troubleshooting Common Gas Furnace Problems
Every year, countless Calgary house owners ask, "What's wrong with my gas heater?" If you remain in that circumstance, this guide will arm you with information prior to you call a furnace business. Knowledge is defense against being benefited from-- though the majority of repair professionals have sound ethics.
Note: This guide covers the most common problems, particularly those most furnace maintenance calgary house owners can quickly contact no tools or standard tools such as screwdrivers and a multimeter.
1. The Furnace Won't Start
If nothing happens when the thermostat is set above the house's existing temperature level, the most likely causes are these:
- The heater switch (located on or near the heating system, appears like a typical light switch) is switched off and just needs to be switched on, though the heater might have a short 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 circuitry brief in the heater
- The thermostat isn't set to "heat," which is simple to examine and fix
- The thermostat isn't working, and this is sometimes caused by a wire coming loose, so check the circuitry connections
- The thermostat needs fresh batteries, if battery-powered, or it is bad and need to be replaced, an issue that can be detected using an electrical furnace tune up calgary multimeter that reveals if a circuit is complete
- The filter is dirty and should be changed or cleaned, a problem that is specifically true on more recent heating systems that are equipped to shut down if the filter isn't permitting appropriate air flow, a condition that can trigger severe mechanical failure
- The heating system's main circuit board/control board is bad, a concern that can be detected by a HVAC technician is nothing else resolves the concern
2. Furnace Blowing Cold Air
If the furnace won't produce heat, you can inspect to see if it is getting power by moving the fan switch from the "Automobile" position to the "On" position. If the fan begins, then the heater is getting power. The most likely concerns then are:
- The gas is turned off, so examine the gas dick near the heating system to make sure it is parallel to the gas line
- The gas control valve isn't opening and must be changed
- The ignitor is failing and should be changed
- The draft motor isn't working or the fresh-air intake is obstructed, perhaps by snow or debris, and requires to be cleared
3. The Draft Motor Runs, Heater Won't Start
The draft motor is likewise called the inducer motor. It pulls hot combustion gases through the heater and out the exhaust stack. If it starts and after that the furnace shuts down, the cause might be:
- The motor or the board that controls it has failed and need to be replaced
- An obstructed air consumption or obstructed exhaust chimney (snow, debris and bird's nests are common causes) need to be cleared
- Among the concerns gone over above with gas, gas valve and ignitor must be attended to
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 help you in fixing draft motor concerns and what is triggering them.
5. The Flame Starts, but the Heater Shuts Down
If the burner begins making heat however soon shuts off without warming your house, the flame sensing unit isn't working. If the sensor has deterioration on it, sanding it may work, though replacing it is a longer-lasting repair.
6. The Blower Will Not Shut Down
If the blower motor runs all the time, there are three typical issues:
- The fan switch on the thermostat is set to "on" rather than "vehicle".
- Relays in the control board are stuck in the closed position, so the blower is getting a consistent supply of electrical energy, and the control panel must be replaced.
- The thermostat likewise has contacts that control power to the heating system, and they can be used, so the thermostat should be changed.
7. Why Does the Heater Keep Shutting Off?
If your furnace burner lights but the heater quickly turns off, there are a few common problems that may trigger this:.
- The heating system filter is dirty and must be cleaned or changed.
- The flame sensing unit isn't working and ought to be changed.
- The thermostat is stopping working.
- While these prevail, there are numerous other possible causes finest detected by a heater technician. This video gives extensive protection to the issue of heating system short-cycling.
8. The Heating System Runs but Can't Keep your home Warm.
If your heater is appropriately sized for your house, then it ought to keep your house warm even in extreme cold. If it runs constantly however isn't providing adequate heat, the likely causes are:.
- A dirty filter that should be cleaned (just if the washable type) or changed.
- The filter is the wrong type for your heating system and restricts airflow, so must be replaced.
- The filter is installed backwards, a concern that can be inspected by trying to find the arrows on the filter frame that reveal correct setup instructions with the circulation of air.
- Duct are leaking, in some cases producing obvious whistling noises, and it is time to have them sealed as recommended by Energy Star.
9. The Furnace Makes Loud Noises.
A noisy furnace is most often the outcome of:.
- The furnace being a single-stage model that works on high capability all the time, so it's going to be loud.
- A bad bearing in the draft motor or the blower motor that should be changed.
- A leak in the heating system cabinet, sheet metal plenum or ductwork near the heater that should be tightened.
- An unclean filter, which can likewise cause whistling.
10. The Heater Leaks when A/C is Running.
Water condenses on the evaporator coil in your furnace, and if it leaks onto the flooring, the concern is most likely a blocked drain pan or drain line.
11. The Air Coming from the Heating System Smells Bad.
Foul odors from the furnace are usually caused by:.
- An extremely filthy filter that ought to be washed, if washable, or changed.
- A dead rodent or bird someplace in the system, normally a job for a professional heating system technician.
12. The CO Screen Going Off.
A carbon monoxide alarm should be taken seriously. Turn the heater off at the thermostat. Don't enter into the room where the heater is located. Open doors and windows, and go outside. Call 911 from a cellular phone outside your house.
How to Select a Gas Heating System Repair Expert.
Some property owners choose the most inexpensive repair work service in Calgary, and the outcomes are normally bad. Inexpensive services are either just beginning, so lack experience or they have a bad credibility, so need to give inexpensive pricing to get jobs.
On the other hand, some services are overpriced. The best method to discover quality heater repair at a fair rate is to get quotes from several of the top heater repair business in Calgary. Meet with each, learn more about their history and the experience of the specialists that will do the work. Select a skilled heating system repair work professional with affordable rates.