Coachmen Mirada – Furnace Igniter & Control Board Replacement

Different brands fail in different ways — and once you’ve serviced enough of them, you start building a mental map of which rig is going to have which problem. That brand-specific pattern recognition is what separates a tech who’s been doing this for years from someone who’s just good with tools. The Coachmen Mirada has a well-documented reputation for furnace igniter and control board failures, and I’ve pulled into enough driveways and campgrounds to know that when a Mirada owner calls me saying their heat stopped working mid-trip, I’m already mentally reaching for those specific parts before I’ve even popped the access panel. A failed igniter means no ignition sequence, which means no heat — and if you’re parked in the mountains in October, that’s not a minor inconvenience, that’s a safety issue. This guide walks through exactly how I diagnose and replace these components in the field, using the same process I’d run whether I’m in your driveway or a KOA two states from home.

The Igniter That Actually Survives a Mirada Winter

The Suburban 232286 igniter is the weak link in every Mirada furnace system I’ve diagnosed — it carbons up, corrodes at the electrode, and stops firing without warning. Once it starts misfiring, you’re looking at a no-heat situation that can strand you in sub-freezing temps within 48 hours.

What works

• Direct OEM spec match — clips in without any adapter hunting or pin-configuration guessing, and the furnace actually recognizes it on first ignition cycle.
• The electrode gap stays stable through 3+ heating seasons, which means you’re not chasing intermittent cold-start failures every 18 months like you would with the cheap universal knockoffs.
• Wire assembly is pre-terminated and insulated properly — no exposed connections that corrode or arc against the burner box over time.

What doesn’t

• Amazon’s stock on this exact part number is inconsistent — order it 3-5 days before you actually need to run the furnace, because a 2-week supply backorder with no heat is a real problem for full-timers.
• You still need to replace the control board at the same time in most Miradas — this igniter alone won’t fix a furnace that’s throwing lockout codes because the board isn’t reading the flame signal properly.

I once swapped this igniter thinking it would solve a no-heat call on a 2019 Mirada, only to find the control board was already toast and wouldn’t recognize the new electrode signal. 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)

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