Mobile RV Stove and Oven Repair Across Florida
An RV range that won't light or an oven that won't hold temperature is almost always a piezo igniter, a thermocouple, or a clogged orifice - none of which require removing the appliance. We diagnose and repair at the coach with the most common parts on the truck.
The most common reason an RV burner will not light even when the piezo spark is audible is not a failed igniter but a contaminated or blocked burner orifice. The orifice is a precision brass fitting with a calibrated hole - typically 0.012 to 0.018 inches in diameter - that meters the propane flow rate. Spider webs, insect debris, and carbon from previous incomplete combustion reduce this opening enough to prevent reliable ignition. In Florida, where coaches spend months in storage between trips, orifice blockages are the most frequent stove complaint we see.
Why the Burner Won't Light With a Good Spark
A visible or audible spark at the electrode does not guarantee that the gas-air mixture at the burner head is ignitable. If the orifice is partially blocked, the gas flow is too low to support ignition - the spark fires into a mixture that is too lean, and the burner does not catch. Owners often replace the igniter module after this symptom without result because the module was never the problem.
The sequence Jesse follows is: confirm gas pressure at the stove fitting, remove and inspect the burner orifice, check the spark gap at the electrode, and then test the igniter module. In the majority of no-light cases, the problem is resolved before reaching the module. Modules are tested last because they require a meter and a test procedure that takes time; orifice inspection takes two minutes.
Oven That Heats Unevenly or Won't Reach Temperature
An RV oven that reaches 300 degrees when set to 400 is almost always a thermocouple or gas pressure issue. The thermocouple is a thin metal probe that sits in the burner flame and generates a small voltage that holds the gas valve open. As the oven heats, the thermocouple is supposed to allow the valve to modulate. When the thermocouple ages or is slightly mispositioned, it produces insufficient voltage and the valve throttles too early.
The oven thermostat - which sets the temperature target - is the second candidate. RV oven thermostats are mechanical bimetal devices and they drift over time. A thermostat that reads 400 but opens the gas valve at 300 is common in ovens more than eight years old. Both parts are inexpensive and interchangeable; the correct test is to use an oven thermometer to measure actual temperature versus set temperature across the full range.
Cleaning a Clogged Burner Orifice
The correct tool for clearing a burner orifice is a soft brass bristle brush or a calibrated orifice drill - not a steel pin, a toothpick, or compressed air blown backward through the fitting. A steel pin enlarges the calibrated opening and permanently alters the gas-air ratio. A reversed air blast pushes debris into the gas line rather than clearing it. The orifice must be cleaned from the gas-flow direction with appropriate tools.
Removal is the safest approach for thorough cleaning. The orifice fitting threads out of the burner body with a wrench. Once removed, the opening is cleaned with solvent and inspected under magnification before reinstallation. Jesse replaces orifices that show erosion or deformation rather than cleaning and reinstalling them - a replacement orifice costs $8-15 and ensures the calibrated size is correct.
The Thermocouple - Why It Makes the Oven Cut Out
The thermocouple serves as a safety interlock. It must sense a live flame in order to allow gas to flow. The logic is: if the flame goes out, the thermocouple cools, voltage drops, and the gas valve closes automatically within 30-60 seconds. This prevents gas accumulation if a flame is extinguished by a draft or a sudden pressure drop. The problem occurs when an aging thermocouple has degraded enough that its voltage output has fallen below the gas valve's hold threshold - the valve closes even with a live flame.
Owners experience this as the oven lighting, heating for 5-10 minutes, then shutting off mid-cook. It restarts when the thermocouple cools, then shuts off again. This cycling is the signature of a weak thermocouple. Replacement takes 20 minutes and costs $75-165. It is the first part replaced on any oven that cuts out after initially lighting.
Continuous Clicking Spark - What Failed
When the spark module continues clicking after a burner is lit - or clicks continuously without being activated - the cause is almost always moisture in the igniter wiring or a wet electrode cap. Florida humidity condenses on the ceramic electrode housing, provides a conductive path to ground, and allows the module to fire continuously as it attempts to complete a circuit. The spark module does not know whether the burner is lit; it responds only to the control signal and the electrode impedance.
Drying the electrodes and the module housing - gently, with a cloth and then with time - stops the clicking in most cases within an hour. If the problem recurs quickly after drying, the ceramic electrode insulator has absorbed moisture and cracked, providing a permanent conduction path. The electrode assembly is replaced as a unit.
Safe Manual Lighting When the Igniter Is Out
RV propane burners can be manually lit with a long lighter when the electronic igniter fails. The procedure is: open the burner valve slowly, wait two seconds for gas to purge air from the line, then bring the flame source to the burner head. This two-second purge is important - lighting immediately can produce a pop from the brief air-gas mix. Oven burners follow the same sequence, with the added step of holding the thermocouple button for 30 seconds after the flame catches to allow the safety circuit to energize.
Manual lighting is safe and standard practice in situations where the igniter module is awaiting replacement. The important safety rule is to never open the gas valve before having the flame source ready and in position. If the burner does not light within five seconds of opening the valve, close the valve, wait two minutes for any gas to disperse, and try again.
Service Pricing
| Service | Notes | Typical Range |
|---|---|---|
| Service call + ignition diagnosis | Gas pressure test, spark test, and thermocouple continuity check | $299 - $399 |
| Piezo igniter module replacement | Module and electrode; most common stove electrical failure | $85 - $195 |
| Thermocouple replacement (oven) | Safety shutoff; most common oven failure | $75 - $165 |
| Burner orifice cleaning / replacement | Clogged orifice from storage; per burner | $65 - $145 |
| Range valve or regulator service | Full gas valve service or replacement | $120 - $270 |
| Full range replacement | 3-burner or 2-burner replacement; LP connection included | $420 - $950 |
Pricing transparency: All prices are estimates based on typical coach configurations. Labor-intensive access situations, custom coach layouts, and parts availability affect the final figure. The service call fee of $299 - $399 covers diagnosis, testing, and the first hour of labor.
Triton RV Repair quotes in writing before any repair begins. There is no charge for a recommendation that the repair is not cost-effective.
Frequently Asked Questions
Why won't my RV burner light even when I hear the spark?
A visible or audible spark at the electrode does not guarantee that the gas-air mixture at the burner head is ignitable. If the orifice is partially blocked, the gas flow is too low to support ignition - the spark fires into a mixture that is too lean, and the burner does not catch. Owners often replace the igniter module after this symptom without result because the module was never the problem.
What causes an RV oven to heat unevenly or not reach temperature?
An RV oven that reaches 300 degrees when set to 400 is almost always a thermocouple or gas pressure issue. The thermocouple is a thin metal probe that sits in the burner flame and generates a small voltage that holds the gas valve open. As the oven heats, the thermocouple is supposed to allow the valve to modulate. When the thermocouple ages or is slightly mispositioned, it produces insufficient voltage and the valve throttles too early.
How do I clean a clogged burner orifice on an RV stove?
The correct tool for clearing a burner orifice is a soft brass bristle brush or a calibrated orifice drill - not a steel pin, a toothpick, or compressed air blown backward through the fitting. A steel pin enlarges the calibrated opening and permanently alters the gas-air ratio. A reversed air blast pushes debris into the gas line rather than clearing it. The orifice must be cleaned from the gas-flow direction with appropriate tools.
What is a thermocouple and why does it make the oven cut out?
The thermocouple serves as a safety interlock. It must sense a live flame in order to allow gas to flow. The logic is: if the flame goes out, the thermocouple cools, voltage drops, and the gas valve closes automatically within 30-60 seconds. This prevents gas accumulation if a flame is extinguished by a draft or a sudden pressure drop. The problem occurs when an aging thermocouple has degraded enough that its voltage output has fallen below the gas valve's hold threshold - the valve closes even with a live flame.
My range spark clicks continuously even when the burner is lit - what failed?
When the spark module continues clicking after a burner is lit - or clicks continuously without being activated - the cause is almost always moisture in the igniter wiring or a wet electrode cap. Florida humidity condenses on the ceramic electrode housing, provides a conductive path to ground, and allows the module to fire continuously as it attempts to complete a circuit. The spark module does not know whether the burner is lit; it responds only to the control signal and the electrode impedance.
Sources and Further Reading
- Suburban RV range documentation - SR-1 and SR-2 series igniter specifications, thermocouple ratings, and burner orifice dimensions.
- Furrion RV appliance documentation - RV range and cooktop service manuals and ignition system troubleshooting guides.