ICP Integrated Furnace Control Board for RGX036KRCA0AAA — Ignition Control Kit | Ships Today
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Overview
This is the OEM integrated furnace control board kit (part number 1183618) for the ICP / Tempstar / Heil RGX036KRCA0AAA gas furnace. The control board is the brain of the furnace — it sequences the inducer motor, hot surface igniter, and gas valve, monitors flame through the flame sensor, manages blower on/off timing, and runs continuous safety diagnostics. It operates on 120V line power and supplies 24V to the low-voltage control circuit. A failed board typically leaves the furnace unresponsive to a call for heat, stuck in ignition lockout, short-cycling, or flashing diagnostic LED fault codes. Replacing the board restores reliable ignition and safe, sequenced operation.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 (KIT CONTROL BOARD) |
| Type | Integrated Furnace Control (IFC) |
| Brand | ICP / Tempstar / Heil |
| Line Voltage | 120V AC |
| Control Voltage | 24V AC |
| Fit | OEM Replacement Kit |
Compatibility
Engineered as a direct-fit replacement for the ICP / Tempstar / Heil RGX036KRCA0AAA gas furnace. This board kit also services many related RGX-series furnaces built on the same platform across the ICP family of brands (Heil, Tempstar, Comfortmaker, Arcoaire). Confirm the part number on your existing board before ordering.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
- Access — Remove the furnace blower-compartment service panel.
- Document — Photograph every wire and connector on the existing board before disconnecting anything.
- Remove — Label and unplug each harness, then remove the mounting screws and lift out the old board.
- Install — Mount the new board in the same orientation and reconnect each harness exactly per your photos.
- Test — Restore power, call for heat, and verify the full ignition sequence and blower operation with no fault codes on the diagnostic LED.
Signs You Need a Replacement
- Furnace does not respond to a thermostat call for heat
- Igniter, inducer, or gas valve fails to energize in sequence
- Repeated ignition lockouts or short-cycling
- Diagnostic LED flashing a board or control fault code
Shipping & Returns
Ships same day on orders placed before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days