Mobile RV Repair in Tallahassee, Florida
The coldest corner of Florida, and a furnace that has not been asked to do anything since last winter.
RV furnaces fail on the first cold night of the year, and it is not a coincidence. The furnace is the one major appliance that sits completely unused for ten months in Florida, and every part of its start-up sequence - the thermostat call, the blower spinning up, the sail switch proving airflow, the gas valve opening and the igniter lighting it - has to happen in order.
We are mobile - we come to your RV in Tallahassee. Call 888-759-1438.
Tallahassee is the part of Florida that actually gets cold, and the appliance most likely to let people down here is the one nobody has thought about since last January.
This page is the start-up sequence in order, because knowing where it breaks tells you a lot before anyone opens anything.
What has to happen for an RV furnace to light?
Five things in a fixed order, and the order is the diagnosis. The thermostat calls for heat, which starts the blower. The blower spins up and moves enough air to close a sail switch, which is a safety device proving there is airflow before any gas is allowed. With that proved, the control board opens the gas valve and energizes the igniter. The igniter lights the burner, and a sensor confirms a flame is actually present - if it does not, the board shuts the gas off within seconds and often locks out. Because the sequence is fixed, the symptom tells you where it stopped. Nothing happens at all: thermostat or power. Fan runs and stops after a few seconds with no ignition attempt: airflow or the sail switch. Fan runs, you hear a click, but no flame: gas supply, igniter or the flame sensor.
The Tallahassee East job: a Chateau with a failed igniter
A Thor Chateau Class C at Tallahassee East KOA with a propane furnace igniter failure during a January cold snap. We replaced the Atwood igniter assembly and tested it at operating temperature, and the owner had heat back the same morning they called. Two details are worth passing on. Testing at operating temperature rather than just confirming it lights matters, because a marginal component can fire perfectly from cold and then fail once everything around it has warmed and expanded - which produces a furnace that works when the technician is there and quits at two in the morning. And the timing was entirely typical: it was the first genuinely cold night of the season, the first time the furnace had been asked to run since the previous winter, and the failure had been sitting there unnoticed for ten months.
The fan runs but no heat comes out. What does that mean?
It narrows things considerably, because it tells you the thermostat and the blower are fine and the failure is later in the sequence. If the fan runs for a few seconds and then stops with no attempt at ignition, suspect airflow: a blocked return or discharge vent, a restricted duct or a sail switch that is not closing because the blower is not moving enough air past it. If the fan runs, you hear the gas valve click and there is still no flame, the problem is at the burner end - no gas, a dirty or obstructed burner, a failed igniter, or a flame sensor that cannot confirm what it is looking at. One overlooked cause deserves special mention in a state where furnaces sit idle: insects. Mud daubers and wasps block burner tubes and the exhaust during the ten months of disuse, and that is a genuinely common finding here.
Is there anything I should check before calling?
Four things, all of them free, and any one of them can save a call-out. Confirm there is actually propane in the tank and that the valve is fully open, since a tank people assume is full frequently is not. Check the battery, because the furnace blower is a substantial twelve-volt load and a weak battery will spin the fan too slowly to close the sail switch - which is why a furnace can fail on battery and work perfectly on shore power. Look at the vents inside and out and clear anything blocking them, including whatever has been stored in front of a return. And try resetting the system by cycling the thermostat off and on, since a control board that has locked out after failed ignition attempts will not try again until it is reset. If all four are good, the fault is genuinely in the furnace.
How cold does it really get in Leon County?
Cold enough that this is a different conversation from the rest of the state. North Florida sees freezing nights in a normal winter and the Big Bend is the coldest corner of it, so both a working furnace and real freeze protection matter here in a way they do not four hundred miles south. Two things follow. If the coach is stored through winter, protect the plumbing properly rather than just draining it, because water sits in low points, traps, the pump and the water heater and that trapped water is what splits fittings. And if the coach is in use, the furnace is not optional equipment - it is also what keeps an enclosed underbelly above freezing on some coaches, so a furnace failure on a cold night can become a plumbing failure by morning. NOAA publishes actual station data if you want a defensible number for your own address.
Where do people camp around Tallahassee?
River and spring country rather than beach, and it is quieter than most of Florida. Tallahassee East KOA is the commercial site east of the city and is where the job above took place. Ochlockonee River State Park is south toward the coast where the river meets the bay. Edward Ball Wakulla Springs State Park is south of the city and is one of the largest and deepest freshwater springs in the world. Florida State Parks publish that their full-facility campsites include water, electricity and a dump station as part of the campground. Two local notes worth having. This is the part of the state where a winter freeze warning genuinely applies to a coach. And Leon County does not have the snowbird surge the peninsula does, so service and site availability here are steadier through the winter months.
Camping around Tallahassee
Leon County and the Big Bend have river and spring camping rather than beach, and all of it is far enough north to get properly cold.
What a visit costs in Tallahassee
The service call is $299 and covers the trip out to your RV and the first hour on site. Work past that first hour is quoted to you once our technician has found the fault, before we carry on. Written estimates are free and you approve one before any work starts. Call 888-759-1438.
Sources for the Tallahassee detail
- NOAA - US Climate Normals - actual station data for a Leon County address rather than a rule of thumb about Florida
- Edward Ball Wakulla Springs State Park - the state's page for the springs south of the city
- Ochlockonee River State Park - the park south toward the coast
- Suburban water heaters operation guide (PDF) - the drain and bypass procedure behind the winterizing answer above
What Leon County owners book most
- RV AC and heating - furnaces, igniters, sail switches and boards
- RV LP gas service - the propane supply the furnace runs on
- Winterization and storage prep - the coldest corner of the state, where it counts
- RV electrical repair - the battery that has to spin the blower
Tallahassee and Leon County RV questions
The furnace fan runs but there is no heat. What is it?
The thermostat and blower are fine, so the failure is later in the sequence. Fan running then stopping with no ignition attempt points at airflow or the sail switch. Fan running with an audible gas valve click and no flame points at gas supply, a dirty burner, the igniter or the flame sensor.
Why do RV furnaces always fail on the first cold night?
Because in Florida it is the one major appliance that sits completely unused for ten months, so the failure has been there all along and nothing asked it to show. Running the furnace for a few minutes in autumn, before you need it, is the cheapest way to find that out at a convenient moment.
What should I check before calling someone out?
Propane in the tank and the valve fully open; the battery, since a weak one spins the blower too slowly to close the sail switch; the vents inside and out for blockages; and a thermostat off-and-on reset, because a board that has locked out after failed ignition attempts will not retry until reset.
My furnace works on shore power but not on battery. Why?
Because the blower is a substantial twelve-volt load. A weak battery turns the fan too slowly to move enough air to close the sail switch, so the safety circuit never allows gas. It looks like a furnace fault and it is a battery fault, which is why testing the battery under load is worth doing first.
Can insects really stop a furnace working?
Yes, and in Florida it is a common finding rather than a curiosity. Mud daubers and wasps build in burner tubes and exhaust outlets during the long months of disuse, blocking the burner or the flue. It is one of the first things worth checking on a furnace that has not run since last winter.
Do I need to winterize a coach stored in Tallahassee?
Yes. This is the coldest corner of Florida and freezing nights are a normal part of winter here. Draining alone leaves water in low points, traps, the pump and the water heater, which is exactly what splits. Antifreeze through the system is the appropriate approach at this latitude.
Can a furnace failure cause plumbing damage?
On some coaches, yes, and it is worth knowing before a cold night. The furnace is what keeps an enclosed and heated underbelly above freezing on a lot of layouts, so a furnace that quits at two in the morning can become a burst fitting by breakfast. That is the argument for testing it before you need it.
Do you cover the Big Bend from Tallahassee?
We cover Leon County from this page and neighboring areas as scheduling allows - tell us the address and we will be straight about the timing. Travel is inside the service call rather than billed separately, so distance within the county does not change what a visit costs.