Entegra Accolade – Furnace Igniter & Control Board Replacement

Entegra Accolade – Furnace Igniter & Control Board Replacement

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Complete repair guide for the Entegra Accolade – Furnace Igniter & Control Board Replacement. Follow these steps to diagnose and fix the issue yourself.

Parts & Tools You’ll Need

Step 1: Diagnose Furnace Ignition Failure

Start by identifying whether your furnace issue stems from the igniter electrode or control board by listening for the blower motor activation when you call for heat. If the blower runs but you hear no clicking/sparking sound at the burner area and smell no propane, the igniter electrode is likely failed. If the blower doesn’t activate at all and you see no LED indicators on the circuit board, the control board itself is the culprit—use your digital multimeter to confirm 12V DC power is reaching the board connectors.

Step 2: Disconnect Power and Propane Supply

Turn off the 12V DC power to your furnace by flipping the dedicated breaker on your RV’s electrical panel, then locate and close the propane shut-off valve at the tank—you’ll typically find this on the exterior near your water heater. Wait a minimum of 5 minutes to allow residual propane gas to dissipate from the furnace chamber and lines before proceeding with any disassembly.

Step 3: Remove Furnace Access Panel and Components

Unbolt the furnace access panel using a 3/8-inch socket or wrench, then carefully disconnect the sail switch wire harness and igniter electrode connector from the circuit board. Document these connections with photos or labels before removal to ensure correct reassembly. Take note of the furnace mounting bolts—typically four 1/2-inch bolts securing the unit to the cabinet—as you’ll need to reference their locations during reinstallation.

Step 4: Replace Igniter Electrode and Sail Switch

Unscrew the old furnace igniter electrode from its ceramic mount using a 1/2-inch wrench, then install the new electrode by threading it clockwise until snug—do not over-tighten as this can crack the ceramic housing. Simultaneously replace the sail switch by removing its two mounting screws and swapping in the new unit, ensuring the switch paddle aligns perpendicular to the air flow path inside the furnace chamber.

Step 5: Install New Furnace Control Board

Carefully slide the new furnace circuit board into the mounting bracket, aligning the connector ports toward the igniter and sail switch harnesses. Reconnect the igniter electrode wire to terminal A and the sail switch connector to terminal B on the new board, checking that each connector seats fully with an audible click. Verify there are no bent pins on the board connectors and that all connections are moisture-free before reapplying power.

Step 6: Reassemble Furnace and Restore Utilities

Reinstall the furnace access panel and secure it with all original bolts, torqued to approximately 8-10 foot-pounds to avoid cracking the panel. Re-engage the propane shut-off valve by turning it clockwise until you feel mild resistance, then flip the 12V DC breaker back on and allow the system 2-3 minutes to initialize before testing.

Step 7: Test Ignition and Verify Safe Operation

Set your thermostat 5 degrees above the current interior temperature to trigger a heating cycle, then listen for the blower activation followed by 2-3 seconds of igniter sparking clicks. Confirm the propane/CO combo detector does not alarm and that you detect no propane smell after 60 seconds of operation—the burner flame should be blue with a slight yellow tip. Run the furnace for 15 minutes on high setting, checking that warm air flows from all cabin vents and the sail switch engages properly; if any anomalies occur, shut down immediately and recheck all connections.