Heartland Eddie Bauer Signature – Furnace Igniter & Control Board Replacement

This guide covers the complete furnace igniter and control board replacement procedure for the Heartland Eddie Bauer Signature – Furnace Igniter & Control Board Replacement. Follow each step carefully to restore reliable heat to your fifth wheel.

Parts & Tools You’ll Need

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Step-by-Step Repair Guide

Step 1: Disconnect Power and Verify Safety

You’ll need to disconnect the 12V DC power supply at the battery disconnect switch or remove the negative battery terminal to prevent electrical shock during diagnostics. Check that your Propane/CO combo detector alarm is functioning properly before beginning work, as you’ll be working near the propane supply line and combustion chamber.

Step 2: Access the Furnace Assembly Location

Locate the furnace unit in your Heartland Eddie Bauer Signature—typically mounted in the basement or under-floor storage area near the fresh air intake. Remove the furnace access panel by unbolting the 4-6 fasteners (usually 3/8″ or 1/2″) and carefully set aside, noting the orientation of any gasket material for reinstallation.

Step 3: Test Igniter Electrode with Multimeter

Set your digital multimeter to the resistance (ohms) setting and probe both terminals of the furnace igniter electrode assembly to measure continuity—you should read between 4-14 ohms for a functional electrode. If the reading shows infinite resistance or open circuit (OL display), the igniter electrode has failed and requires replacement.

Step 4: Remove and Replace Igniter Electrode

Disconnect the two-pin connector at the base of the furnace igniter electrode assembly, then unbolt the electrode bracket from the burner assembly using a 1/4″ wrench (typically one fastener). Install the new furnace igniter electrode assembly by reversing the process, ensuring the electrode tip sits approximately 3/16″ away from the burner nozzle for optimal spark gap.

Step 5: Disconnect and Inspect Control Board Connections

You’ll need to photograph or diagram all wire connections on the furnace circuit board before disconnecting anything—typically you’ll find a 4-pin main harness, sail switch leads, high-limit switch leads, and a blower motor connector. Carefully disconnect each terminal by gently depressing the tab on each connector and pulling straight out to avoid damaging the pins.

Step 6: Remove Old Board and Install Replacement

Unbolt the furnace circuit board from its mounting bracket (usually 2-3 screws) and lift it away from the furnace housing carefully to avoid snagging remaining wires. Mount the new furnace control board in the same orientation, secure it with the original fasteners, and reconnect all terminals in their original positions using your reference photos, applying gentle pressure until you hear a click.

Step 7: Verify Operation and Monitor Performance

Reconnect 12V DC power at the battery switch and turn the furnace thermostat to the heating mode, listening for the blower motor to engage within 10-15 seconds and observing the igniter electrode for a visible spark at the burner. Let the system run for 5 minutes while monitoring the Propane/CO combo detector for proper operation, then cycle the thermostat off and on twice to confirm consistent ignition and flame establishment.

Recommended Parts & Affiliate Links

Part	Link
Suburban/Atwood RV furnace replacement unit	View on Amazon
Furnace igniter electrode assembly	View on Amazon
Furnace sail switch	View on Amazon
Furnace circuit board / control board	View on Amazon
Furnace high-limit switch	View on Amazon
Furnace blower motor (12V DC)	View on Amazon
Propane/CO combo detector alarm	View on Amazon
Digital multimeter (auto-ranging)	View on Amazon