Genuine Coleman Mach OEM replacement compressor relay for 47xxx, 48xxx, and 49xxx series rooftop air conditioners — including Mach 8, Mach 3, Mach 10, Mach 15, and Roughneck heat pump models. Controls high-current power delivery to the compressor. Easy to install. 2-year limited manufacturer warranty.
The Coleman Mach 1460-1271 is the OEM replacement compressor relay for the 47xxx, 48xxx, and 49xxx series Coleman Mach rooftop air conditioners — a single part number covering Mach 8, Mach 3, Mach 10, Mach 15, and Roughneck heat pump models across more than 30 compatible model numbers.
The compressor relay is an electrically operated switch that controls high-current 115V AC power to the compressor motor. When the AC control board calls for cooling, it sends a low-current signal to the relay coil, which closes the relay contacts and sends line voltage to the compressor. A failed relay typically presents as an AC unit where the fan runs normally but no cooling occurs — the fan motor and blower are operating, but the compressor never starts because the relay contacts have failed open or the coil is no longer responding to the control signal.
Because the relay handles the full compressor inrush and running current, contact wear and coil fatigue are normal failure modes over time, especially in the heat cycling and vibration environment of a rooftop RV installation. The 1460-1271 is a direct OEM replacement — same electrical ratings, same mounting configuration, same connector interface as the original factory part.
Electrically switches high-current 115V AC line power to the compressor motor on demand from the AC control board — the critical link between controls and cooling
Factory-spec relay — correct electrical ratings, mounting configuration, and connector interface for direct drop-in replacement without modification
One part number covers 30+ compatible model numbers across the 47xxx, 48xxx, and 49xxx series — Mach 8, Mach 3, Mach 10, Mach 15, and Roughneck heat pump variants
Direct replacement with factory connector interface — disconnect the old relay, connect the new one in the same mounting location
A failed compressor relay typically presents with one or more of these symptoms: Fan runs, no cooling: The most common sign — indoor and outdoor fans operate normally, but the compressor never starts and no cooling is produced. The relay contacts have failed open, preventing power from reaching the compressor. AC trips breaker on startup: A relay with welded or sticky contacts may allow the compressor to draw full inrush current at the wrong time, tripping the circuit breaker. Intermittent cooling: A relay with marginal contacts may work sometimes and fail others, producing inconsistent cooling that improves or worsens with temperature or vibration. AC does not respond to thermostat calls: If the relay coil is open, the control board's call-for-cooling signal reaches the relay but no switching occurs — the compressor stays off regardless of thermostat demand. Always confirm the relay is the failed component before replacement. A multimeter check of coil resistance and contact continuity under load provides a definitive diagnosis.
The 1460-1271 fits 47xxx, 48xxx, and 49xxx series model numbers only. Coleman Mach rooftop AC units outside these series use different relay part numbers: • 6xxx series (older models) — use relay p/n 1460-1131 • 6759 / 6795–6799 / 8330 series — use relay p/n 6799B3491 • 46413 series — use relay p/n 1460A1061 Your rooftop unit's model number is on a label on the unit itself, typically visible from the rooftop or accessible when the shroud is removed. Match the full model number against the compatibility list before ordering.
Relay part numbers are not interchangeable between series — electrical ratings and connector configurations differ. Identify your rooftop unit's full model number before ordering to confirm the correct relay for your installation.