An excellent gas furnace troubleshooting guide helps you in determining what is wrong with the heating system based upon its signs. That's what we do here with clear, simple info.
Troubleshooting Common Gas Heater Problems
Every year, countless Calgary homeowners ask, "What's wrong with my gas heating system?" If you're in that circumstance, this guide will equip you with information before you call a furnace company. Understanding is protection versus being benefited from-- though the majority of repair specialists have sound ethics.
Keep in mind: This guide covers the most common problems, particularly those most homeowners can quickly talk to no tools or fundamental tools such as screwdrivers furnace repair calgary and a multimeter.
1. The Furnace Will Not Start
If absolutely nothing happens when the thermostat is set above the house's current temperature level, the most likely causes are these:
- The heater switch (located on or near the heater, appears like a typical light switch) is switched off and merely requires to be switched on, though the heater might have a brief hold-up before beginning
- The breaker is off, and if the circuit continues to trip after it is turned back on, there is likely an electrical wiring short in the furnace
- The thermostat isn't set to "heat," which is easy to examine and remedy
- The thermostat isn't working, and this is often triggered by a wire coming loose, so inspect the circuitry connections
- The thermostat requires fresh batteries, if battery-powered, or it is bad and must be replaced, a concern that can be identified utilizing an electrical multimeter that shows if a circuit is total
- The filter is dirty and must be changed or cleaned, a problem that is specifically real on more recent heating systems that are geared up to shut down if the filter isn't permitting adequate air flow, a condition that can trigger major mechanical failure
- The heating system's primary circuit board/control board is bad, a concern that can be diagnosed by a HVAC professional is absolutely nothing else solves the issue
2. Heater Blowing Cold Air
If the heating system won't produce heat, you can check to see if it is getting power by moving the fan switch from the "Auto" position to the "On" position. If the fan begins, then the heater is getting power. The likely issues then are:
- The gas is shut off, so examine the gas dick near the furnace to ensure it is parallel to the gas line
- The gas control valve isn't opening and should be changed
- The ignitor is failing and need to be changed
- The draft motor isn't working or the fresh-air consumption is obstructed, possibly by snow or debris, and requires to be cleared
3. The Draft Motor Runs, Furnace Will Not Start
The draft motor is likewise called the inducer motor. It pulls hot combustion gases through the furnace and out the exhaust stack. If it begins and then the furnace shuts down, the cause might be:
- The motor or the board that manages it has actually failed and should be changed
- A blocked air intake or blocked exhaust chimney (snow, particles and bird's nests are common causes) need to be cleared
- One of the concerns talked about above with gas, gas valve and ignitor must be dealt with
4. The Draft Motor Will Not Start
The problem, 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 concerns and what is triggering them.
5. The Flame Starts, however the Furnace Shuts Down
If the burner starts making heat however soon shuts off without warming your house, the flame sensor isn't working. If the sensor has rust on it, sanding it might work, though replacing it is a longer-lasting fix.
6. The Blower Won't Shut Off
If the blower motor runs all the time, there are three common problems:
- The fan switch on the thermostat is set to "on" instead of "automobile".
- Relays in the control panel are stuck in the closed position, so the blower is getting a constant supply of electricity, and the control panel should be changed.
- The thermostat likewise has contacts that manage power to the furnace, and they can be worn, so the thermostat should be replaced.
7. Why Does the Heating System Keep Turning Off?
If your heating system burner lights however the heating system quickly shuts off, there are a couple of typical problems that may trigger this:.
- The heater filter is unclean and ought to be cleaned or changed.
- The flame sensing unit isn't working and ought to be changed.
- The thermostat is stopping working.
- While these are common, there are a number of other possible causes finest detected by a heating system specialist. This video gives extensive protection to the problem of heater short-cycling.
8. The Heater Runs however Can't Keep your home Warm.
If your heater is appropriately sized for your house, then it must keep your house warm even in extreme cold. If it runs continuously but isn't offering sufficient heat, the most likely causes are:.
- A filthy filter that must be washed (just if the washable type) or changed.
- The filter is the incorrect type for your heating system and limits airflow, so should be replaced.
- The filter is set up in reverse, a problem that can be examined by searching for the arrows on the filter frame that show appropriate installation instructions with the flow of air.
- Air ducts are dripping, in some cases producing telltale whistling sounds, and it is time to have them sealed as advised by Energy Star.
9. The Furnace Makes Loud Noises.
A noisy heating system is most often the result of:.
- The heating system being a single-stage design that runs 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 leak in the heating system cabinet, sheet metal plenum or ductwork near the heating system that must be tightened.
- A filthy filter, which can also trigger whistling.
10. The Heater Leaks when Air Conditioning is Running.
Water condenses on the evaporator coil in your heater, and if it leakages onto the flooring, the problem is most likely a clogged up drain pan or drain line.
11. gas furnace The Air Coming from the Heater Smells Bad.
Foul odors from the furnace are normally brought on by:.
- An extremely filthy filter that should be washed, if washable, or replaced.
- A dead rodent or bird someplace in the system, generally a task for a professional furnace specialist.
12. The CO Screen Going Off.
A carbon monoxide gas alarm ought to be taken seriously. Turn the furnace off at the thermostat. Do not go into the space where the heater is located. Open doors and windows, and go outside. Call 911 from a cell phone outside your house.
How to Pick a Gas Heating System Repair Specialist.
Some property owners pick the most affordable repair work service in Calgary, and the outcomes are generally bad. Cheap services are either just beginning, so lack experience or they have a bad reputation, so need to offer inexpensive prices to get tasks.
On the other hand, some services are overpriced. The very best way to find quality furnace repair work at a fair price is to get price quotes from several of the top furnace repair work business in Calgary. Meet each, learn more about their history and the experience of the professionals that will do the work. Select an experienced furnace repair work professional with reasonable rates.