I have a Goodman PHK060-1 heat pump. Just recently I have been having a delay after the unit fires up. The outdoor blower starts, and the indoor blower starts anywhere from virtually instantly to five minutes later. Generally speaking, it *seems* like the longer since it has run (and possibly colder), the longer the delay.

Here's a link to the parts (http://site.famousparts.com/goodman/RP-236E.pdf) for this model. I'm thinking this part (http://www.monstermarketplace.com/hvac-parts-and-equipment/goodman-air-handler-sequencer-time-delay-b1370738) is defective and should be replaced. I'd appreciate some advice.

Thanks!