RV Furnace Troubleshooting Guide: Fix It Fast & Stay Warm

RV Furnace Troubleshooting Guide Fix It Fast & Stay Warm

You’re experiencing camper furnace issues, don’t worry, you can troubleshoot them. Check if your furnace shuts off within 30 seconds due to insufficient propane supply or faulty switches.

If it doesn’t turn on, ensure your thermostat is set correctly and your 12-volt coach battery is charged. You’ll want to inspect propane lines and connections for leaks or blockages. As you investigate further, you’ll uncover more potential causes and solutions to get your furnace up and running.

Troubleshooting the Furnace Shuts Off Within 30 Seconds

When your camper’s furnace shuts off within 30 seconds, you’re likely dealing with a problem that’s preventing it from running a full cycle.

You should check the propane supply and ensure it’s sufficient. A faulty sail switch or limit switch can also cause this issue.

The sail switch monitors the blower fan‘s operation, while the limit switch regulates furnace temperature. If the blower fan isn’t working correctly, the sail switch will shut off the furnace.

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You’ll need to inspect and potentially replace these components to resolve the issue and get your furnace running a full cycle again.

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Troubleshooting the Furnace Doesn’t Turn on After Setting the Thermostat

You’re trying to troubleshoot a camper furnace that doesn’t turn on after setting the thermostat. Check that it’s set to “Heat” or “Furnace”. Ensure the 12-volt DC coach battery is fully charged to power the furnace.

Verify the furnace fuse isn’t blown in the 12-volt fuse panel, typically located in an accessible RV area. Loose wiring connections or circuit board problems may prevent the furnace from turning on, requiring an RV technician’s attention.

Troubleshooting the Furnace Blows Cold Air

As the furnace starts up, it’s normal for cold air to blow initially, because the blower fan must reach a minimum number of cubic feet per minute before the propane ignition process begins. You’ll notice this during the initial startup procedure.

The furnace’s safety features, including the sail switch, are designed to prevent propane from igniting until the system is ready. If the blower fan runs briefly, then shuts off, it may indicate a problem with the sail switch.

You should check the sail switch and other components to ensure the furnace operates correctly, providing warm air instead of cold air.

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Troubleshooting the Furnace Fan Runs But the Propane Flame Doesn’t Light

You’re troubleshooting a camper furnace where the fan runs, but the propane flame doesn’t light, and you’ll need to check the propane tank to ensure it’s not empty or leaking.

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You should also inspect the ignitor probe, as it may be faulty or clogged, preventing the flame from igniting.

Propane Tank

The propane tank is a critical component when troubleshooting a camper furnace that has a running fan but no lighting propane flame.

You should check if you’ve ran out of propane, as empty propane tanks won’t allow the RV furnace to light. Inspect the propane tank and ensure it’s turned on.

Verify the furnace exhaust is clear and functioning properly. A blocked exhaust can prevent the propane flame from lighting. Check your propane tank’s level and refill it if necessary to get your RV furnace working again.

Ignitor Probe

Propane tank issues resolved, it’s time to inspect the ignitor probe. You’re troubleshooting your RV’s furnace and the fan runs, but the propane flame doesn’t light.

Issue Solution
Dirty probe Clean it
Incorrect gap Adjust it
Faulty probe Replace it

You’ll fix the ignitor probe issue, getting your furnace working.

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Troubleshooting the Furnace Runs Intermittently

You’re troubleshooting the furnace runs intermittently, so you’ll need to identify the cause of the issue, which can be a problem with the sail switch, high-temperature limit switch, or loose wiring connections.

You should check the LP tank level, as a low tank can also cause intermittent operation, and ensure you’re not using both the furnace and a space heater simultaneously.

Cause

Because intermittent furnace operation can be frustrating and difficult to diagnose, it’s essential to identify the underlying cause. You’re troubleshooting your RV’s furnace, and it’s running intermittently.

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Cause Description
Sail Switch faulty switch
Loose Wiring insecure connections
Low LP Tank insufficient BTUs
Space Heater conflicting temperature settings
Mud Daubers blocked exhaust vent

Solution

When troubleshooting an intermittently running furnace, it’s crucial to identify and address the root cause of the problem. You’ll need to check the sail switch and high-temperature limit switch for issues.

As you’re troubleshooting your RV’s furnace, ensure all wiring connections are secure. A low LP tank can also cause intermittent operation, so check the propane level.

Additionally, using a space heater with the furnace can lead to thermostat conflicts. Inspect the furnace exhaust vent for blockages, like mud dauber nests, which can cause intermittent furnace operation, and clean or replace it as needed to resolve the issue.

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Additional RV Furnace Troubleshooting Tips

If your camper’s furnace still isn’t working after checking the basics, it’s time to dig deeper. You’ll inspect RV furnaces’ internal components, like the Furnace Fan. Check the black plastic housing for damage. Verify the two wire connections to the fan are secure.

Ensure the XenForo Ltd.Multisite System, if installed, isn’t interfering with furnace operation. You’re looking for any signs of wear or damage that could be causing the issue.

By methodically checking each component, you’ll be able to identify and potentially fix the problem, getting your camper’s furnace up and running again.

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Furnace Breakdown and Preparation

You’ve checked the basics and inspected internal components, now it’s time to break down the furnace and prepare for a more in-depth analysis. This furnace breakdown is crucial for camper troubleshooting.

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Preparation Step Description
Remove panels Access internal components
Disconnect wires Prevent electrical shock
Inspect gas lines Check for leaks
Test thermostat Ensure proper function
Consult RV manual Follow specific guidelines

You’re doing this preparation to ensure a safe and effective furnace breakdown in your RV.

Repairing and Reinstalling the Sail Switch

The sail switch is a critical component in your camper’s furnace, and repairing or reinstalling it requires attention to detail.

You’ll need to inspect the sail switch for debris and consider cleaning or replacing it if necessary. When installing a new sail switch in your RV, attach it to the bracket and then to the fan housing.

Ensure proper installation and test the furnace to verify the sail switch is working correctly, completing the installation.

Frequently Asked Questions

Why Is My Furnace Not Kicking on in My Camper?

You’re checking furnace maintenance, thermostat issues, and gas supply, but also consider electrical problems and camper installation defects that might prevent your furnace from kicking on properly now.

Is There a Reset Button on My RV Furnace?

You’re on the right track, cutting to the chase, your RV’s furnace design lacks a reset button, try the reset process to resolve electrical issues, thermostat problems, and maintain furnace maintenance.

Why Is My RV Furnace Fan Not Kicking On?

You’re experiencing fan issues, likely due to thermostat problems, ignition faults, or gas leaks; check circuit breakers and ensure they’re not tripped, as this can prevent the fan from kicking on.

Can Hear Your Furnace Click on but It Does Not Fire Up?

You’re hearing clicks, but it won’t fire up, indicating Ignition issues, faulty thermostat, electrical problems, gas leaks, or pilot troubles, so you’re checking each component systematically now.

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Conclusion

You’ve got the ball in your court now, with these troubleshooting tips to get your camper furnace up and running. When it comes to RV furnace repair, it’s all about trial and error – cut to the chase and identify the issue. By following these steps, you’ll be back on track in no time, with a warm and cozy camper to boot.

Andrew is a researcher and tech writer passionate about all things tech. He has written for many different publications and websites and has a wealth of knowledge to share.

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