White-Rodgers 21M51U-843 Universal 2-Stage HSI Furnace Control Kit w/ 21D64-2
USD 152.50 USD
Specifications
| Power Source | Corded Electric |
| Color | White |
| Number Of Heat Settings | Variable |
| MPN | 21M51U843 |
| Material | Plastic |
| Smart Home Compatibility | Universal |
| Power Phase | 1 Phase |
| Brand | White-Rodgers |
| Heating System | Furnace |
| Voltage | 24 V |
| Model | 21M51U-843 |
Brand: White-Rodgers / Emerson (Premium Rescue line) Model: 21M51U-843 (kit) — contains 50M51-843 board + 21D64-2 ignitor. Two-stage HSI integrated control, 3-speed PSC circulator output Replaces: 50M51-242, all 50M61-XXX, 18M3401, 20300001, 20300003, 46M9901, 50M61-120/288/289/495/843, 83L9301, CNT03077, X13650839010, plus Trane KIT15943 and many others (full cross-reference inside box) Compatible brands: Trane, American Standard, Lennox, Goodman, Amana, Armstrong, White-Rodgers, and more