521052 Suburban RV Furnace P-40/30 WIRING KIT

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This item is not in stock Special-order Charge: $20.00

The 521052 Suburban RV Furnace P‑40/30 Fan Control Wiring Kit is the OEM wiring and control‑interface kit used on Suburban P‑30 and P‑40 furnaces. These larger, higher‑output furnaces require a specific harness layout to correctly sequence the blower motor, safety switches, and ignition board. When the original harness becomes heat‑damaged, brittle, or miswired, this kit restores factory‑correct operation and ensures the furnace runs through its ignition and shutdown cycles safely.

This kit is commonly needed during furnace replacements, rebuilds, or when upgrading older wiring that no longer meets Suburban’s control‑logic requirements. It includes the correct connectors, wire lengths, and color coding to match OEM specifications, preventing issues like blower‑only operation, no‑heat conditions, or intermittent cycling.

🔧 What the 521052 Kit Supports

• OEM wiring harness for Suburban P‑30 and P‑40 furnaces

• Ensures correct blower start‑up and shutdown timing

• Provides proper connections for limit switch, sail switch, ignition board, and time‑delay relay

• Restores factory‑correct wiring layout and color coding

• Prevents miswiring that causes no ignition, blower‑only, or short‑cycling

• Ideal for furnace replacements, rebuilds, or correcting damaged wiring