LTV Unity Furnace Repair - Our Rolling Rambling's

Some repairs on an RV are DIY-friendly. Others involve propane, 120-volt shore power, or structural load-bearing components where a mistake has real consequences. Part of my job is knowing which category a job falls into — and being honest with owners about the line between a competent DIY fix and one that needs a professional on site. The furnace on a Leisure Travel Vans Unity sits squarely in the middle of that line — it’s a propane-fired appliance with an electronic ignition system, and when it stops lighting, the culprit is almost always a failed igniter or a dead control board, both of which are genuinely replaceable by a careful, methodical owner who respects what they’re working with. I’ve been called out to Unity rigs parked in campgrounds mid-October with owners wrapped in sleeping bags, and every single time, a cold furnace on a well-maintained van came down to one of these two components — so if you follow this guide closely and take the gas and electrical connections seriously, this is a repair you can own.

The part that fixed it: The igniter that stops the wet sputtering and lasts past 18 months — Fit For Suburban RV Furnace Parts 232286,Single Probe Gas on Amazon →

The Igniter That Actually Survives Propane Cycling on a Unity Furnace

The igniter electrode is where most Unity furnace failures start — it either won’t spark when the control board sends voltage, or it sparks inconsistently and the board keeps shutting down the burner thinking there’s a safety issue. Once you’ve confirmed the control board is firing the ignition circuit, this is the part that determines whether you’re actually heating or just listening to the blower run.

What works

OEM-equivalent spark gap and ceramic insulator survive repeated thermal cycling without cracking or carbon tracking — the cheap aftermarket versions fail again in 18 months.
Wire assembly is pre-routed with strain relief molded in, so you’re not fumbling with a bare probe trying to get it seated exactly 3/32″ from the burner tube.
Once installed and the furnace fires, you’ll hear a crisp snap-snap-snap on ignition, not the wet sputtering that tells you the electrode is weeks away from failure.

What doesn’t

Shipping times from third-party Amazon sellers can stretch 2–3 weeks; if you’re parked in November without heat, order this before you’re stranded.
The connector clip is fragile plastic — if you’re not careful during removal, you’ll crack it and spend an extra hour splicing new wire, which means you need a soldering iron and heat-shrink tubing on hand.

I second-guessed myself the first time I installed one of these because the spark looked slightly weaker than the OEM part I’d pulled out, but it fired consistently on the first ignition cycle and held steady for the entire 20-minute test run. 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)