ICP Furnace Control Board Kit for RGS120LDAA0AAA — OEM Replacement | Ships Today
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Overview
This OEM control board kit (ICP part #1183618) is the integrated furnace control (IFC) — the brain of your ICP / Heil / Tempstar RGS120LDAA0AAA gas furnace. It manages the entire heating sequence: it powers the draft inducer, energizes the hot surface igniter, opens the gas valve, monitors the flame sensor, and times the blower on and off. It also coordinates safety lockouts and reads pressure-switch and limit inputs. When the board fails, symptoms range from a completely dead furnace to erratic behavior — short cycling, blower that won't start or won't shut off, no ignition sequence, or fault codes flashing on the diagnostic LED. The kit ships with the board and required mounting hardware for a clean OEM replacement.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP (Heil / Tempstar) |
| Function | Ignition, blower, and safety sequencing |
| Application | Gas Furnace |
Compatibility
Direct OEM fit for the ICP / Heil / Tempstar RGS120LDAA0AAA gas furnace. Because integrated furnace controls are model-specific in their relay logic and connector layout, always match part #1183618 to your existing board and compare the connector pinout before wiring.
Installation Guide
- Safety First — Disconnect electrical power and shut off gas; verify zero voltage at the board with a multimeter.
- Access — Remove the furnace control-compartment door.
- Document — Photograph every harness connector and terminal before unplugging — this is the single most important step.
- Remove — Unplug all connectors, remove the mounting screws, and lift out the old board.
- Install — Mount the new board with the supplied hardware and reconnect each harness exactly per your photos.
- Test — Restore power and gas, call for heat, and verify the full sequence: inducer, igniter, gas valve, flame, and blower.
Signs You Need a Replacement
- Furnace completely dead with no diagnostic LED activity
- No ignition sequence despite a thermostat call for heat
- Blower runs constantly or fails to start
- Erratic short cycling or fault codes pointing to the control
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