Jayco Alante – Furnace Igniter & Control Board Replacement

It was November, maybe fifty-two degrees outside, and I’d cranked the thermostat to heat mode expecting the familiar low rumble of the Jayco’s furnace catching. Instead: click. Click. Click. Then nothing. No roar, no warmth building in the ducts, just that hollow, repeating tick that told me the igniter was cycling without actually firing the burner. I’ve stood in that exact moment enough times now—hand on the cabinet access door, listening to a furnace try and fail—that I can walk into a rig with a Jayco Alante and diagnose it before I even pull the panel open. The igniter and control board on these units fail in a predictable enough sequence that I keep both in my van, because waiting out a cold night or making a parts run costs owners money and comfort they shouldn’t have to lose. What follows is the actual step-by-step I use to figure out which component is actually dead, so you can order the right fix instead of swapping parts and hoping.

Replacing the Suburban 232286 Igniter Electrode

On the Alante platform, the Suburban 232286 igniter electrode is typically where the failure chain starts — when you’re getting repetitive clicks but no flame appears, this component is your first suspect because a degraded or corroded electrode will cause the control board to cycle endlessly in search of ignition without actually igniting anything.

Parts and Tools

• Replacement single-probe gas furnace igniter electrode with wire assembly, matched to Suburban 232286 specification — check current price
• Suburban RV furnace control board assembly compatible with Jayco Alante (verify part number against your existing board before ordering)
• Wire strippers and small needle-nose pliers for disconnecting igniter and control board terminals
• Multimeter set to resistance (ohms) mode to test igniter continuity and control board output
• Small flashlight or headlamp for visibility inside the furnace cabinet
• Propane leak detector solution (soapy water) to verify no gas leaks after reassembly

Step-by-Step Instructions

Step 1: Isolate propane and 12V power to the furnace

Turn off the propane tank valve at the exterior connection. Switch the RV battery disconnect to OFF or remove the negative battery terminal. Wait two minutes for any residual pressure to bleed from the system. This prevents accidental gas ignition or electrical shorts while you work. Do not skip this step—a live furnace with the cabinet open is a fire hazard.

Step 2: Photograph the wire connections and remove the furnace access panel

Take clear photos of how the igniter wires and control board connectors are routed before touching anything. Locate the furnace cabinet access panel—on Alante models it’s typically mounted on the exterior wall or inside a cabinet below the dinette. Remove the fasteners (usually Phillips screws) and set the panel aside. Note the position of any foam insulation or ducting you move.

Step 3: Test the igniter electrode for continuity

Set your multimeter to ohms (resistance) mode. Disconnect the wire leads from the igniter electrode terminals. Touch the multimeter probes to each terminal of the electrode itself. A healthy electrode reads between 4 and 14 ohms. If the reading is infinite (no continuity) or the electrode is visibly corroded or cracked, the igniter is dead and needs replacement. If continuity is good, the control board is likely the culprit.

Step 4: Remove and replace the igniter electrode

If the igniter failed the continuity test, disconnect both wire leads from the electrode terminals using needle-nose pliers. Note which wire goes where—take another photo if needed. Unbolt the mounting bracket holding the electrode (usually one or two small bolts). Install the new Suburban 232286 electrode in the same position, reattach the bracket, and reconnect the wires to the correct terminals. Ensure wires are fully seated and not pinched.

Step 5: Test the control board output if the igniter was good

If the igniter passed the continuity test, the control board is likely failing to send the ignition signal. Reconnect the igniter wires. Set your multimeter to DC voltage mode. Restore 12V power (reconnect battery or flip the disconnect switch). Turn the thermostat to heat mode and listen for the click. When you hear it, probe the control board output terminals with the multimeter—you should read 12V during the ignition cycle. No voltage means the board is dead.

Step 6: Remove and replace the control board

If the board is not sending voltage, turn off 12V power again. Disconnect all wire harnesses from the control board—typically a main power connector and the igniter signal wire. Note the connector positions with photos. Unbolt the board from its mounting bracket (usually two to four screws). Install the new board in the same orientation, reattach the bracket, and reconnect all harnesses, matching your photos. Ensure connectors click fully into place.

Step 7: Restore power and verify ignition

Reconnect the 12V battery or flip the disconnect switch back on. Open the propane tank valve. Turn the thermostat to heat mode and listen for the igniter click followed by the furnace roar within two to three seconds. You should feel warm air in the ducts within 30 seconds. If the furnace fires and holds, the repair is complete. If it still clicks without igniting, stop and recheck all wire connections.

Step 8: Check for propane leaks and close up

Mix soapy water in a spray bottle and apply it to all propane line connections inside the cabinet and at the tank valve. Look for bubbles—any bubbles mean a leak that must be fixed before using the furnace. Once confirmed dry, reinstall the furnace access panel and all fasteners. Verify the thermostat cycles the furnace on and off normally over the next 15 minutes.

What works

• Once installed, the igniter glows hot and fast with no lag time between board signal and flame — gone are the days of waiting four or five cycles to see if fire actually catches.
• The mounting bracket accepts the electrode without forcing or bending, and the wire harness plugs in cleanly without hunting for adapters or workarounds.
• In cases where the board has been cycling the igniter cycle after cycle but no combustion occurs, replacing just the electrode can extend your furnace’s functional life by another full season or more before the board itself requires service.

Where it falls short

• Certain aftermarket replacements ship with thinner or mismatched wire gauges — before you seal the access panel back up, verify the connector seats all the way or you’ll be troubleshooting a spark-loss condition you just created yourself.
• If your underlying problem is actually a dead control board rather than electrode wear, this igniter swap won’t silence the clicking; you’ll find that out the difficult way once everything’s buttoned up and the board still won’t hold flame after spark.

I’ve swapped this igniter on Alantes where I was certain the control board was the culprit, only to have flame return and stay lit — that moment made me rethink my diagnostics on the next three calls. Fit For Suburban RV Furnace Parts 232286,Single Probe Gas Furnace Igniters Electrode with Wire Assembly, Camper Furnace For Suburban 232286 Above 934701426 SF-20, SF-25, SF-30, SF-35 (SF Series)

This post contains affiliate links. As an Amazon Associate, I earn from qualifying purchases at no extra cost to you.