No steam = no defrost?

by Shawn
(Dayton, OH)

American Standard Model 4A6B3036A1000BB Heat pump (almost 6 yrs old from install date) has started to not emit the steam it used to last year? It's been fairly cold (lows in low single digits in the last week a few nights) but last year would steam regularly during winter.

In addition I looked at thermostat (Emerson) a yesterday morning and noticed a flame and "aux" flashing as well?

Other times the flame flashes but no "aux" shows up during the day or evening time and you can feel the lower heat output difference vs. when the "aux" is showing. I guess the emergency heat is kicking on it seems.

Unit outside still kicks on and blade spins but no ice accumulation at the moment.

Click here to post comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Heat Pump Defrost Problems.

Share this page:
Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.