ICP Control Board for RGS180LRAA0AAAA — OEM Kit 1183618 24V | Ships Today
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Overview
This is a genuine OEM integrated furnace control board kit (part number 1183618) for the ICP / Tempstar / Heil RGS180LRAA0AAAA gas furnace. The control board is the brain of the furnace — it manages the ignition sequence, monitors the flame sensor and pressure switch safeties, sequences the inducer and blower motors, and controls the gas valve based on thermostat demand. Operating on a 24V control signal, it coordinates every heating cycle from call-for-heat through post-purge. When a control board fails, the furnace may fail to ignite, lock out repeatedly, short-cycle, blow cold air, or stop responding to the thermostat entirely. Visible signs of failure include scorched relay contacts, cracked solder joints, blown traces, or a flashing diagnostic LED reporting an internal fault. This kit ships with the board and the mounting hardware needed for a direct replacement.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP / Tempstar / Heil |
| Control Voltage | 24V |
| Fits Model | RGS180LRAA0AAAA |
| Fitment | OEM Direct Replacement |
Compatibility
Designed as a factory-exact replacement for the ICP, Tempstar, Heil, Comfortmaker, and other ICP-family RGS180LRAA0AAAA gas furnace. Always confirm the part number printed on your existing board matches 1183618 before installing.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
- Access — Remove the furnace service panel to expose the control board.
- Document — Photograph every wire and connector position before disconnecting anything.
- Remove — Unplug the low-voltage and line-voltage harnesses, release the mounting tabs or screws, and lift out the old board.
- Install — Mount the new board, then reconnect each harness exactly per your photos.
- Test — Restore power, initiate a call for heat, and confirm a full ignition cycle and the diagnostic LED reads normal.
Signs You Need a Replacement
- Furnace will not ignite or repeatedly locks out
- No response to the thermostat or erratic blower/inducer operation
- Flashing fault code on the board's diagnostic LED
- Visible burn marks, melted relays, or cracked solder on the board
Shipping & Returns
Ships same day 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