Tempstar Control Board for T4A360GKD200 — ComfortAlert Diagnostic Module | Ships Today
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
Overview
This OEM ComfortAlert control board (part number 1177402) is the diagnostic brain of your Tempstar T4A360GKD200 condensing unit. It monitors compressor current, voltage, and operating conditions, then flashes coded LED faults for issues such as low voltage, locked rotor, open circuit, missing phase, and short cycling. By watching for damaging conditions, the module protects the compressor and gives technicians fast, accurate diagnostics. A faulty board can cause nuisance lockouts, intermittent no-cool calls, or a complete loss of compressor protection. Installing the correct factory module restores dependable operation and built-in fault reporting.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1177402 |
| Type | ComfortAlert Diagnostic Control Board |
| Brand | Tempstar |
| Control Voltage | 24V |
| Function | Compressor Monitoring & Fault Codes |
| Application | AC Compressor / Heat Pump |
Compatibility
Direct OEM replacement for the Tempstar T4A360GKD200 condensing unit. The identical ComfortAlert module also services matching ICP-family condensers, including comparable Heil, Comfortmaker, and ICP units that shipped with part number 1177402. Confirm the part number on your existing board before ordering.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
- Access — Remove the condenser service / control panel.
- Document — Photograph every wire and terminal connection before disconnecting.
- Remove — Disconnect the low-voltage leads and unsnap or unscrew the old board from its standoffs.
- Install — Mount the new ComfortAlert board and reconnect each lead exactly as photographed.
- Test — Restore power, place a cooling call, and confirm normal operation with a steady status LED and no fault codes.
Signs You Need a Replacement
- Persistent or erratic fault-code flashes with no real fault
- Compressor will not start or randomly locks out
- Intermittent no-cool or short-cycling behavior
- Status LED is dark or unresponsive with power applied
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