Emerson 57T01-843 Blower Time Delay Relay

Exactly what I wanted

direct replacement no issues.

Direct replacement for 4352-F relays installed on Trane air units. Quick and easy replacement for burned out relay and for a fraction of cost quoted by local contractor who literally insisted to replace the whole Trane unit.

Works just as it should. Very happy with this purchase!

Good part

Works like a charm and saved me a ton of money. Thanks!

I have a Trane heat pump, manufactured in 2008. Ive been having problems with the blower motor seemingly having a mind of its own, ie. turning off while the system is heating or cooling, causing indefinite running of the outdoor unit. To combat this, I set the blower to run continuous (ON position instead of AUTO) so that the system would never be running without the blower. This worked for a while, but not a very comfortable remedy since youre getting ambient temp air coming into the house between cycles. This is effectively air conditioning your house between cycles of heat during winter, and vice versa in summer. Eventually, this trick stopped working as sometimes the blower (in ON position) would still cut out, or sometimes not turn on at all. Replacing start run capacitors did nothing. Not being an HVAC tech, I started looking into getting a new unit, but then my dad recommended to try this relay first. It took me 2 minutes to swap it in and it FIXED the whole issue with my blower, just in time for an 18 degree night in Tennessee. Everything has been working perfectly since, and now I can move on to the next issue: finding a girlfriend.

Looks different then the original but has all the same connection works great.

Purshased two so I would have a backup, just in case. Perfect fit and easy to install!

Works great for the price this is a must buy!!