Depending on the installation and/or customer preference, differing filter arrangements can be applied. Filters can be installed in the cen-tral return register or a side panel external filter rack kit (upflows). (Type FSP CATEGORY IV Direct or Non Direct Vent Air Furnace) RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION. Installer: Affix all manuals adjacent to the unit. C US ® These furnaces comply with requirements embodied in the American National Standard / National Standard of Canada ANSI Z21.47CSA-2.3 Gas Fired Central Furnaces. IO-280L 12/08. Goodman Mfg GAS-FIRED WARM AIR FURNACE GKS9 User Manual Gks9 g, Attention installing personnel, Nstallation. Affix all manuals adjacent to the unit. These furnaces comply with requirements embodied in the American National Standard / National Standard of Canada ANSI Z21.47CSA-2.3 Gas Fired Central Furnaces.
*NOTE: Please contact your distributor or our website for the applicable Specification Sheet referred to in this manual.
ATTENTION INSTALLING PERSONNEL
As a professional installer you have an obligation to know the product better than the customer. This includes all safety
precautions and related items.
Prior to actual installation, thoroughly familiarize yourself with this Instruction Manual. Pay special attention to all safety
warnings. Often during installation or repair it is possible to place yourself in a position which is more hazardous than
when the unit is in operation.
Remember, it is your responsibility to install the product safely and to know it well enough to be able to instruct a
customer in its safe use.
Safety is a matter of common sense..a matter of thinking before acting. Most dealers have a list of specific good safety
practices..follow them.
The precautions listed in this Installation Manual are intended as supplemental to existing practices. However, if there is
a direct conflict between existing practices and the content of this manual, the precautions listed here take precedence.
(Type FSP CATEGORY IV Direct or Non Direct Vent Air Furnace)
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION.
Installer: Affix all manuals adjacent to the unit.
These furnaces comply with requirements embodied in the American National Standard / National Standard of Canada ANSI Z21.47·CSA-2.3 Gas Fired Central Furnaces.
This furnace is shipped from the factory as a Dedicated Upflow.
A Blocked Drain Kit (part #0270K00012) is available and MUST BE USED
if the furnace is installed Horizontal Left or Horizontal Right.
I
Digitech rp70 manual download. View and Download DIGITECH RP70 owner's manual online. Modeling Guitar Processor. RP70 Computer Hardware pdf manual download. Also for: Rp 70. View and Download DIGITECH RP90 owner's manual online. Modeling Guitar Processor. RP90 Computer Hardware pdf manual download. Computer Hardware DIGITECH RP70 Owner's Manual. Modeling guitar processor (48 pages). DigiTech warrants this product, when used solely within the U.S., to be free from defects in materials and workmanship under.
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A good gas furnace troubleshooting guide assists you in determining what is wrong with the furnace based on its symptoms. That’s what we do here with clear, straightforward information with links to videos where helpful.
You may also like: How to Get the Most From Your HVAC Warranty
Once the problem is diagnosed, see our Gas Furnace Repair Cost Guide for an estimate, assistance in deciding if repairing or replacing the furnace is best based on the circumstances and tips on finding a qualified repair and installation pro.
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Troubleshooting Common Gas Furnace Problems
Troubleshooting Common Gas Furnace Problems
Every year, thousands of homeowners ask, “What’s wrong with my gas furnace?” If you’re in that situation, this guide will arm you with information before you call a furnace company. Knowledge is protection against being taken advantage of – though most repair professionals have sound ethics.
Note: This guide covers the most common problems, especially those most homeowners can easily check with no tools or basic tools such as screwdrivers and a multimeter.
1. The Furnace Won’t Start
If nothing happens when the thermostat is set above the home’s current temperature, the most likely causes are these:
The furnace switch (located on or near the furnace, looks like a common light switch) is turned off and simply needs to be turned on, though the furnace might have a short delay before starting
The circuit breaker is off, and if the circuit continues to trip after it is turned back on, there is likely a wiring short in the furnace
The thermostat isn’t set to “heat,” which is easy to check and remedy
The thermostat isn’t working, and this is sometimes caused by a wire coming loose, so check the wiring connections
The thermostat needs fresh batteries, if battery-powered, or it is bad and must be replaced, an issue that can be diagnosed using an electrical multimeter that shows if a circuit is complete
The filter is dirty and must be replaced or cleaned, an issue that is especially true on newer furnaces that are equipped to shut down if the filter isn’t allowing adequate air flow, a condition that can cause serious mechanical failure
The furnace’s main circuit board/control board is bad, an issue that can be diagnosed by an HVAC technician is nothing else solves the issue
2. Furnace Blowing Cold Air
If the furnace 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 comes on, then the furnace is getting power. The likely issues then are:
The gas is turned off, so check the gas cock near the furnace to make sure it is parallel to the gas line, its position when the
The gas control valve isn’t opening and must be replaced
The ignitor is failing and must be replaced
The draft motor isn’t functioning or the fresh-air intake is blocked, perhaps by snow or debris, and needs to be cleared
Read our detailed post for more info:
3. The Draft Motor Runs, Furnace Won’t 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 furnace shuts down, the cause might be:
The motor or the board that controls it has failed and must be replaced
A blocked air intake or blocked exhaust chimney (snow, debris and bird’s nests are common causes) must be cleared
One of the issues discussed above with gas, gas valve and ignitor must be addressed
4. The Draft Motor Won’t 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 issues and what is causing them.
5. The Flame Starts, but the Furnace Shuts Down
If the burner starts making heat but soon shuts off without warming your home, the flame sensor 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 Shut Off
If the blower motor runs all the time, there are three common issues:
The fan switch on the thermostat is set to “on” rather than “auto”
Relays in the control board are stuck in the closed position, so the blower is getting a constant supply of electricity, and the control board must be replaced
The thermostat also has contacts that control power to the furnace, and they can be worn, so the thermostat must be replaced.
Here’s a video that covers this troubleshooting a furnace blower motor that won’t shut off.
Goodman Gas-fired Warm Air Furnace User's Information Manual
7. Why Does the Furnace Keep Shutting Off
If your furnace burner lights but the furnace soon shuts off, there are a few common issues that might cause this:
The furnace filter is dirty and should be cleaned or replaced
The flame sensor isn’t working and should be replaced
The thermostat is failing
While these are common, there are several other potential causes best diagnosed by a furnace technician. This video gives in-depth coverage to the problem of furnace short-cycling.
8. The Furnace Runs but Can’t Keep the House Warm
If your furnace is properly sized for your home, then it should keep your home warm even in extreme cold. If it runs constantly but isn’t providing enough heat, the likely causes are:
A dirty filter that must be washed (only if the washable type) or replaced
The filter is the wrong type for your furnace and restricts airflow, so should be replaced
The filter is installed backwards, an issue that can be checked by looking for the arrows on the filter frame that show proper installation direction with the flow of air
Air ducts are leaking, sometimes producing telltale 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 result of:
The furnace being a single-stage model 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 must be replaced
A leak in the furnace cabinet, sheet metal plenum or ductwork near the furnace that must be tightened
A dirty filter, which can also cause whistling
10. The Furnace Leaks when AC is Running
Water condenses on the evaporator coil in your furnace, and if it leaks onto the floor, the issue is most likely a clogged drain pan or drain line, an issue covered in our AC Troubleshooting Guide.
11. The Air Coming from the Furnace Smells Bad
Foul odors from the furnace are usually caused by:
A very dirty filter that should be washed, if washable, or replaced
A dead rodent or bird somewhere in the system, usually a job for a professional furnace technician
12. The CO Monitor Going Off
A carbon monoxide alarm should be taken seriously. Turn the furnace off at the thermostat. Don’t go into the room where the furnace is located. Open doors and windows, and go outside. Call 911 from a cell phone outside your home.
How to Choose a Gas Furnace Repair Expert
Some homeowners choose the cheapest repair service in town, and the results are usually poor. Cheap services are either just getting started, so lack experience or they have a bad reputation, so must give cheap pricing to get jobs.
On the other hand, some services are overpriced. The best way to find quality furnace repair at a fair price is to get estimates from several of the top furnace repair companies in town. Meet with each, learn about their history and the experience of the technicians that will do the work. Choose an experienced furnace repair contractor with reasonable rates. You can expedite this process by using our Free Local Estimates service. When you fill out a quick form and submit it, you’ll soon be contacted by three of the top furnace repair and installation companies near you. They are prescreened for experience, and all are licensed and insured for your protection.
If this guide has helped you diagnose a furnace repair issue, consider passing it along on social media to friends and followers that might have furnace issues too!
Related Article: Furnace Replace and Installation Cost Guide