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Sonzrod T9AS1D12-12 3-Pack 12V/30A Relay – RV/Dryer Fix

$8.99 on Amazon.com (as of October 14, 2026, 6:34 PM EST) View details ↗

When your RV air conditioner’s blower motor fails to engage or your dryer stops heating, the issue is often a worn-out relay on the control board—not the entire unit. Instead of replacing the whole HVAC control module at a premium cost, our Sonzrod T9AS1D12-12 3-pack offers a direct, professional-grade solution. Designed as a drop-in replacement for OEM relays like the Potter & Brumfield T9AS1D12-12, these 4-pin SPST-NO relays deliver 30A/240VAC contact capacity and 12VDC coil activation, ensuring reliable performance in high-current appliance circuits.

Built with silver alloy contacts for superior arc resistance and a durable housing rated for high-temperature environments, these relays restore full functionality to Coleman-Mach RV HVAC systems and compatible dryers. The through-hole PCB mounting design guarantees a secure fit, while the included 3-pack provides convenient spares for DIY repairs or preventive maintenance. Whether troubleshooting a ‘dryer not heating’ error or an RV blower motor failure, replacing just the relay can save you hundreds compared to a full control board replacement—without sacrificing quality or compatibility.

Contact Rating30A @ 240VAC
Coil Voltage12VDC
FormSPST-NO (1 Form A)
Terminal Type4-Pin Through-Hole PCB
CompatibilityColeman-Mach RV HVAC control boards, Potter & Brumfield T9AS1D12-12, T9A series
Pack Quantity3
Can these relays be used in both RV HVAC systems and household dryers?
Yes, they’re designed for compatibility with Coleman-Mach RV HVAC control boards and various household dryers where a T9AS1D12-12 or similar relay is specified.
Will these relays prevent future control board failures?
While replacing a failed relay won’t prevent all system issues, using high-quality relays like these can extend the lifespan of your control board by reducing stress on its components.
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