Suburban RV furnaces provide reliable heat on the road, but an unexpected shutdown can leave a coach chilly. Many owners encounter a reset button on the Suburban furnace and wonder how to use it safely. This guide explains what the Suburban RV furnace reset button does, where to locate it, step-by-step reset instructions, common causes that trigger resets, and maintenance tips to reduce future interruptions. It also covers safety considerations and when to seek professional help.

What Is The Suburban RV Furnace Reset Button

The reset button is part of the furnace’s safety and control system. When the unit detects a fault such as flame failure, an overheating condition, or a vent restriction, it may shut itself down to prevent unsafe operation. Pressing the reset button begins a new ignition cycle after the fault condition is cleared. On Suburban models, the button is typically labeled Reset and is located on the blower assembly or control panel inside the furnace cabinet. It is not a general power switch.

Resetting is a diagnostic action rather than a cure. A single reset may restore heat if the fault was temporary, but repeated resets indicate an underlying problem that should be addressed. The reset function helps the unit attempt ignition again after sensors confirm safe conditions. Readers should never bypass safety controls or repeatedly reset if there is a gas smell or continuing ignition failure.

Because Suburban offers multiple model lines, the exact button design and location can vary. Some layouts place a small recessed button behind a service panel, while others attach a labeled reset button on the burner door. Always consult the owner’s manual for model-specific details and safety warnings before probing the furnace.

Locating The Reset Button On Suburban Furnaces

Locating the reset button starts with safety, then a quick visual check. Before touching any internal components, power down the system and prepare to access the blower area. The reset button is commonly found behind a service panel or on the control board within the furnace cabinet. If needed, remove the lower front panel with the appropriate screws, keeping track of any wiring harness connections. In many Suburban units, the button is small, red or black, and labeled Reset or with a tiny recessed design.

Safety first: never probe live electrical connections. If the button cannot be seen or the panel commands are unclear for a specific model, reference the model’s diagram or contact a qualified RV technician. In some cases, the reset option is part of a diagnostic LED pattern rather than a standalone button, so identify all indicators before proceeding.

Step-By-Step Resetting The Suburban RV Furnace

Resetting a Suburban RV furnace should be a deliberate, safety-focused procedure. The steps below follow common practice and are suitable for most Suburban models, but always refer to the specific manual for your unit.

Power down: Turn off the RV’s main breaker and switch off the furnace’s dedicated power switch if present. Close the propane valve as an extra precaution if you suspect a gas-related fault.
Wait a moment: Allow about 60 seconds to clear residual energy and reset internal controllers.
Open the access panel: Remove the service panel to access the blower housing and control board. Keep the workspace clear and avoid touching exposed wiring.
Find the reset button: Locate the small button labeled Reset or a recessed push area on the control board or burner assembly. If the button is recessed, use a non-conductive tool to press it gently.
Perform the reset: Press and release the reset button firmly. Some models require a quick press and release, while others may need a brief press and hold (about 3–5 seconds). If your manual specifies a hold, follow those instructions exactly.
Restore power and gas (if applicable): Turn the propane valve back on and switch the furnace power back on. If you turned off the main breaker, restore it to the on position.
Watch for ignition: The furnace should attempt ignition within a few seconds. You may hear the burner ignite and then the blower engage. If ignition occurs, allow the system to run for several minutes and monitor for stability.
Observe and test: Once heat is produced, operate the thermostat to ensure the system cycles correctly. If the unit shuts down again, do not press the reset button repeatedly; move to troubleshooting and consider professional inspection.

If there is a persistent gas odor, hissing sound, or you suspect a leak, evacuate the area and contact the propane supplier or emergency services. Do not reset a furnace with a known gas leak in progress.

Common Causes For Reset Tripping

Reset trips on Suburban RV furnaces are signals that something is not functioning within safe limits. Understanding common causes helps prevent unnecessary resets and guides efficient troubleshooting.

Dirty or faulty flame sensor: A dirty flame sensor can fail to detect a steady flame, triggering a safety lockout and a reset request.
Ignition problems: A weak or delayed ignition can fail to establish a flame, causing the control board to trip after several attempts.
Gas supply issues: Inadequate propane pressure or a partially closed valve can prevent proper ignition and trigger a reset.
Venting and exhaust blockages: Restricted venting or blocked exhaust pathways can cause heat buildup and safety shutdowns.
Overheating or high-limit conditions: Restricted airflow, dirty filters, or blocked intake can raise temperatures beyond safe limits, activating the high-limit switch.
Electrical issues: Voltage fluctuations, loose connections, or blown fuses can lead to control board resets.
Age and wear: Older units may experience degraded sensors or aging components that provoke more frequent resets.
Thermostat or control faults: A faulty thermostat can signal improper demand for heat, causing the furnace to shut down.

Each of these factors can contribute to a reset after ignition attempts. Diagnosing the root cause often requires inspecting sensors, wiring, and venting, combined with checking gas supply and filter conditions.

Troubleshooting After A Reset

If a reset restores heat but the problem recurs, systematic troubleshooting helps identify the underlying cause without unnecessary resets.

Check flame sensor and igniter: Look for soot, corrosion, or misalignment. Clean the flame sensor with a soft, dry cloth or sandpaper if recommended by the manual, and inspect the igniter for cracks or wear.
Inspect the gas system: Ensure the propane tank is full or gas supply is uninterrupted. Check the valve position and look for smells around the furnace that may indicate a leak.
Assess venting: Inspect both intake and exhaust paths for debris, bird nests, or snow blockages. Clear obstructions to restore proper airflow.
Replace air filters: A clogged filter reduces airflow and can cause overheating. Replace with the correct size and type for the unit.
verify thermostat operation: Confirm that the thermostat calls for heat correctly and that wire connections are secure on both ends.
Look for error codes: Some Suburban models display LED codes or fault codes. Decode them using the manual to pinpoint the subsystem involved.

If, after a thorough check, the furnace still trips on reset, avoid continuing the cycle. Repeated resets can mask a serious fault and may require professional diagnostics or part replacement.

Maintenance Tips To Prevent Future Trips

Regular maintenance reduces the likelihood of reset trips and extends the life of a Suburban RV furnace. A proactive approach helps ensure reliable heat when it matters most.

Seasonal flame sensor care: Clean the flame sensor and inspect the flame pattern during each season transition. A clean sensor improves ignition reliability.
Airflow management: Replace or clean air filters every 1–3 months during heavy use. Keep vents and ductwork clear of obstructions.
Vent and exhaust inspection: Regularly inspect venting for cracks, corrosion, or wildlife intrusion. Ensure proper termination outdoors to prevent backdrafts.
Electrical health: Check wiring connections for tightness and signs of wear. Replace damaged fuses or circuit breakers as needed.
System diagnosis: If the RV sits unused for long periods, run a quick diagnostic test before cold weather to catch issues early.
Professional service: Schedule annual servicing with an RV technician familiar with Suburban models to calibrate burners and verify safety components.

Safety Considerations And When To Call A Technician

Safety must remain the top priority when dealing with RV furnaces. Gas appliances require careful handling to prevent fire, explosion, or carbon monoxide exposure.

Gas smell or CO detector alarms: If there is any gas odor or a CO detector alarms, evacuate immediately and call emergency services or the propane supplier. Do not reset the furnace in this situation.
Ventilation integrity: Ensure there is adequate ventilation in the RV cabin to avoid dangerous buildup of combustion byproducts.
Age and condition: Furnaces older than 15–20 years may have degraded safety components. If resets become frequent, consider replacement rather than repeated repairs.
Professional evaluation: Complex ignition problems, intermittent shutdowns, or repeated lockouts should be diagnosed by a qualified RV technician who can access internal components safely.

Frequently Asked Questions

Q: Is the reset button a general power switch? A: No. The reset button restarts the ignition safety circuit after a fault. It does not turn the furnace on or off like a power switch.

Q: Can I reset the Suburban furnace multiple times in one night? A: Repeated resets may indicate an ongoing fault. If the furnace trips repeatedly, stop resetting and seek professional help to diagnose the root cause.

Q: What should I do if I smell gas after a reset? A: Immediately stop what you are doing, leave the area, and call your propane supplier or emergency services. Do not attempt to light or reset the furnace again.

Q: Will a clogged vent cause a reset? A: Yes. Vent blockages can cause overheating or flame-out conditions, triggering the safety shutdown. Inspect and clear vents before retrying a reset.

Q: How often should a Suburban furnace be serviced? A: A professional inspection at least once a year, plus seasonal checks before peak heating periods, helps maintain reliability and safety.