Coleman Evcon Furnace Troubleshooting: Expert Tips and Solutions

To troubleshoot a Coleman Evcon furnace, check the thermostat settings and ensure the power supply is intact. Inspect the furnace filter for clogs.

A Coleman Evcon furnace is reliable but may occasionally face issues. Common problems include thermostat malfunctions, power supply interruptions, and clogged filters. Regular maintenance can prevent many of these issues. Start by checking the thermostat to ensure it’s set correctly.

Verify that the furnace is receiving power. A clogged filter can also hinder performance, so inspect and replace it if necessary. Understanding these basic troubleshooting steps can save time and avoid costly repairs. Always refer to the user manual for detailed instructions and safety guidelines. Regular upkeep ensures your furnace operates efficiently and extends its lifespan.

Common Issues

Experiencing issues with your Coleman Evcon Furnace can be frustrating. Understanding common problems helps in quick troubleshooting. This section covers the most frequent issues.

No Heat

If your furnace is not producing heat, several factors could be responsible. Start by checking the thermostat settings. Ensure it is set to “heat” mode and the temperature is higher than the current room temperature.

• Verify the power supply to the furnace. Check the circuit breaker and ensure it is not tripped.
• Inspect the pilot light. If it is out, follow the manufacturer’s instructions to relight it.
• Examine the air filter. A clogged filter can restrict airflow and prevent heating.

Intermittent Operation

Intermittent operation can cause inconsistent home heating. This issue may arise from several causes.

1. Check the thermostat. Ensure it is functioning correctly and the batteries are not dead.
2. Inspect the flame sensor. A dirty flame sensor can cause the furnace to shut off. Clean it gently with a cloth.
3. Examine the blower motor. Ensure it is running smoothly. Listen for unusual noises that indicate problems.

Use this table to summarize common troubleshooting steps:

Issue	Possible Cause	Solution
No Heat	Thermostat settings, power supply, pilot light, air filter	Adjust settings, check power, relight pilot, replace filter
Intermittent Operation	Thermostat, flame sensor, blower motor	Check thermostat, clean sensor, inspect motor

Addressing these common issues can restore your furnace’s performance.

Diagnostic Tools

Understanding the diagnostic tools for your Coleman Evcon furnace is essential. These tools help identify issues quickly. This guide will focus on using a multimeter and checking the thermostat.

Multimeter Use

A multimeter is a crucial tool for furnace troubleshooting. It measures voltage, current, and resistance. Follow these steps to use it effectively:

1. Turn off the power to the furnace. Safety first.
2. Set the multimeter to the correct setting (volts, ohms, or amps).
3. Test the power supply to the furnace. Ensure it’s receiving power.
4. Check the thermostat connections. Ensure they are intact and clean.
5. Measure the resistance of the furnace components. Compare to manufacturer specifications.

Thermostat Check

The thermostat controls the furnace’s operation. A malfunctioning thermostat can cause various problems. Follow these steps to check it:

• Set the thermostat to the desired temperature.
• Ensure the batteries are working. Replace if needed.
• Check the wiring connections. They should be secure and clean.
• Use the multimeter to check the voltage at the thermostat terminals.
• If the thermostat is faulty, consider a replacement.

Issue	Possible Cause	Solution
Furnace not turning on	No power supply	Check power with multimeter
Inconsistent heating	Faulty thermostat	Check thermostat settings
Furnace cycling on and off	Dirty thermostat connections	Clean connections

Pilot Light Problems

The pilot light is a key part of your Coleman Evcon furnace. If the pilot light is not working, the furnace won’t heat your home. Learn how to fix common pilot light problems.

Ignition Failure

If the pilot light won’t ignite, it could be due to several reasons. First, check the gas supply. Ensure the gas valve is open. If there is no gas, the pilot light cannot ignite.

Next, examine the pilot light assembly. Dirt and debris can block the gas flow. Clean the assembly with a soft brush. Also, inspect the thermocouple. This device senses if the pilot light is on. If it is faulty, replace it.

Possible Cause	Solution
Gas valve closed	Open the gas valve
Dirty pilot light assembly	Clean the assembly
Faulty thermocouple	Replace the thermocouple

Flame Goes Out

If the pilot light ignites but goes out, the thermocouple could be at fault. The thermocouple might not sense the flame. This can cause the gas valve to shut off.

Check the thermocouple connection. It should be tight and secure. If the connection is loose, tighten it. If the thermocouple is broken, replace it.

Another reason for the flame going out could be a draft. Ensure there are no drafts near the furnace. A draft can blow out the pilot light. Keep the area around the furnace free from wind or air currents.

• Inspect the thermocouple connection.
• Tighten any loose connections.
• Replace a faulty thermocouple.
• Eliminate any drafts near the furnace.

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Blower Motor Issues

The blower motor in your Coleman Evcon furnace is crucial. It pushes warm air through your home. If the blower motor fails, your furnace won’t work well. Here are some common issues you might face.

Motor Not Running

If your blower motor is not running, check the power supply. Ensure the furnace is plugged in. Verify the circuit breaker is not tripped. If the power is fine, look at the thermostat. Make sure it’s set to heat and the temperature is higher than room temperature.

If these steps don’t help, inspect the blower motor itself. You might need a professional for this. They can test the motor and replace it if necessary.

Strange Noises

Strange noises from the blower motor can be alarming. These noises might include grinding, screeching, or rattling. They often point to mechanical issues.

• Grinding noise: This might mean the motor bearings are worn out.
• Screeching sound: This could indicate a problem with the blower wheel.
• Rattling noise: This often signals loose parts inside the motor.

For any of these noises, turn off the furnace immediately. Call a professional to inspect and fix the issue.

Noise Type	Possible Issue
Grinding	Worn bearings
Screeching	Blower wheel issue
Rattling	Loose parts

Filter Maintenance

Proper filter maintenance is crucial for your Coleman Evcon furnace. It ensures efficient operation and longevity. Regularly replacing and cleaning your furnace filters helps maintain optimal performance.

Filter Replacement

Replacing the furnace filter is simple. Follow these steps to ensure you do it correctly:

1. Turn off the furnace.
2. Locate the filter compartment.
3. Remove the old filter.
4. Check the filter size.
5. Insert the new filter with the correct orientation.
6. Close the filter compartment.
7. Turn the furnace back on.

Replace the filter every 1-3 months for best results. This depends on the usage and air quality.

Cleaning Procedures

Cleaning the filter extends its life and keeps your furnace efficient. Follow these steps:

• Turn off the furnace.
• Open the filter compartment.
• Remove the filter.
• Use a vacuum to remove dust and debris.
• Rinse the filter with water if washable.
• Let the filter dry completely before reinstalling.
• Reinsert the filter and close the compartment.

Clean the filter every month. This ensures optimal airflow and performance.

Maintaining your furnace filter is key to a warm and efficient home. Regular replacement and cleaning prevent issues and extend the furnace’s life.

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Thermostat Settings

Understanding the thermostat settings is crucial for your Coleman Evcon furnace. Proper settings ensure the furnace works efficiently. Let’s dive into the key areas: Calibration and Programming.

Calibration

Calibration keeps the thermostat accurate. An accurate thermostat controls temperature better. Follow these steps to calibrate:

1. Turn off the furnace.
2. Remove the thermostat cover.
3. Locate the calibration screw.
4. Use a small screwdriver to adjust the screw.
5. Turn it slightly left or right.
6. Check the temperature reading with a thermometer.
7. Make small adjustments until they match.
8. Replace the cover and turn on the furnace.

Regular calibration ensures the furnace runs smoothly.

Programming

Programming your thermostat saves energy. Set different temperatures for day and night. Follow these tips for effective programming:

• Set a lower temperature at night.
• Increase the temperature in the morning.
• Lower it when you’re away.
• Program for weekends if your schedule changes.

Most thermostats have four programmable periods:

Period	Suggested Temperature
Wake	68°F (20°C)
Day	60°F (15°C)
Evening	68°F (20°C)
Sleep	60°F (15°C)

Consistent programming helps maintain comfort and reduce energy bills.

Gas Supply Concerns

Gas supply issues can disrupt your Coleman Evcon furnace. These problems often lead to poor heating performance. This section covers key aspects of gas supply concerns. Learn how to identify and fix these issues effectively.

Gas Valve Check

The gas valve controls the flow of gas to your furnace. A malfunctioning gas valve can prevent your furnace from heating properly. Follow these steps to check the gas valve:

1. Turn off the power to the furnace.
2. Locate the gas valve. It’s usually near the gas line.
3. Ensure the valve is in the “On” position.
4. Inspect for any visible damage or wear.
5. If damaged, replace the gas valve immediately.

If the gas valve appears to be fine, proceed to check the pressure issues.

Pressure Issues

Proper gas pressure is crucial for efficient furnace operation. Incorrect pressure can cause the furnace to malfunction. Use a manometer to check the gas pressure:

Step	Action
1	Turn off the furnace and gas supply.
2	Connect the manometer to the gas valve test port.
3	Turn on the gas supply.
4	Read the pressure on the manometer.
5	Compare the reading to the manufacturer’s specifications.
6	Adjust the pressure if needed.

Maintaining proper gas pressure ensures your furnace operates efficiently. Address any gas supply concerns promptly for optimal performance.

Professional Help

Sometimes, troubleshooting a Coleman Evcon furnace requires professional assistance. Professional help ensures the furnace is fixed safely and efficiently. Below, we outline when to call a technician and how to choose the right one.

When To Call

Certain issues signal the need for professional help. Here are common signs:

• Unusual noises: Banging or screeching sounds.
• No heat: Furnace runs but no heat is produced.
• Frequent cycling: Furnace turns on and off too often.
• High energy bills: Unusually high heating costs.
• Gas smell: Possible gas leak, immediate help needed.

Choosing A Technician

Selecting the right technician is crucial. Consider the following factors:

Factor	Description
Experience	Look for technicians with at least 5 years of experience.
Certifications	Ensure they hold proper certifications and licenses.
Reviews	Check online reviews and customer feedback.
Availability	Choose someone who can respond quickly.
Cost	Get a clear estimate before any work begins.

By following these guidelines, you can ensure your Coleman Evcon furnace is in good hands.

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Frequently Asked Questions

Where Is The Reset Button On A Coleman Furnace?

The reset button on a Coleman furnace is typically located on the blower motor housing. Check near the lower panel.

Why Is My Coleman Furnace Not Heating?

Your Coleman furnace may not heat due to a tripped circuit breaker, dirty air filter, or faulty thermostat. Check and reset the breaker, replace the air filter, and ensure the thermostat is set correctly. If the problem persists, contact a professional technician for further diagnosis and repair.

What Do Three Blinks On A Coleman Furnace Mean?

Three blinks on a Coleman furnace indicate a pressure switch error. Check the switch and ensure proper airflow.

Why Does My Coleman Furnace Click But Won’t Start?

Your Coleman furnace clicks but won’t start due to ignition or gas valve issues. Check for loose wires or faulty sensors.

Conclusion

Troubleshooting your Coleman Evcon furnace can save time and money. Regular maintenance ensures efficient operation. Always consult the manual for specific issues. If problems persist, contact a professional technician. Keeping your furnace in top shape guarantees a warm and comfortable home.

Stay proactive to avoid future heating disruptions.