OEM Trane American Standard Defrost Control Board – Replaces CNT5001 CNT05001

Is your heat pump not defrosting properly?

This OEM defrost control board fits Trane and American Standard systems.

It replaces part numbers CNT5001 and CNT05001.

The MPN on this one is 3620.

It's a genuine OEM-style board, not a cheap knockoff.

If your unit is icing up in winter or not switching back to heat mode, the defrost board might be the problem.

Swapping it out is a common fix.

It's new, in original packaging.

Made to fit Trane/American Standard equipment.

If you're an HVAC tech or a knowledgeable DIYer, this board gets your system back to正常工作.

No UPC, just a solid replacement part.