I have the subject Outside Unit at my other home. I *believe* that the fan ran at full speed until I did as below but I could be wrong. I believe that I turned it on and programmed the settings to 2 heat, 1 cool on the Honeywell TH5220D thermostat. Perhaps I am wrong though. Either way I programmed it to 1 heat/1 cool shortly thereafter. Coulda been anything though, the whole thing was covered sold in ice. I chiseled away at much as I could. Anyways, the condenser still kicks on and the house still seems to get warm BUT the fan turns slow. Maybe about half speed. Now that I recall, I could not get the fan to turn at all until I power cycled it. I replaced the capacitor already. I was surprised that didn't fix it. I did smell some burning in the unit but that went away. The unit is quite old, all of the stickers have faded away unfortunately. I just know that it is the subject unit from years ago. My son is going to be going to HVAC school hopefully so we can replace the whole inefficient mess....but until then I'd like to keep this going. NOTE: When replacing the capacitor, there is a possibility that I did not replace it correctly. The capacitor was completely covered in rust in spite of replacing it in 2014 and the terminal makings could not be retrieved. I know that I replaced it correctly last time (fan stopped spinning in the summer after a transformer surge). I took an educated guess e.g. looked at old capacitor and wired the same wires to each terminal based upon the amount of male spades that it had. So the terminal with 4 spades, I moved to the new cap with 4 spades 3 to 3 and 2 to 2. I don't know if that is flawed logic but I'd like to rule that out. Thanks!

Hi, I have an American Standard Platinum 19 heat pump and air handler with electric heat strip backup. Recently I installed a hydronic heating coil with gas boiler as a backup heat source during longer power outages and connected the circulation pump relay to the Aux port 24v relay/supply on my Honeywell interface module. Ive been testing with the breakers on the heat strips off and the system seems to work fine when calling for Aux heat (its pretty cold right now) the hydronic system does a good job of boosting heat output and covering for the heat pump when cycling. Im considering using this as my permanent solution for aux heat as the cost is likely lower and it keeps the system running. Only small thing is that when I switch to emergency heat it says waiting for equipment for a few minutes but then flips on the aux relay and works as normal. My question is if there are any settings in the Honeywell around how it uses aux heat that I would want to change? For instance at what outside temp does it start using aux heat or how it integrates it into the overall operation of the heat pump? Any thoughts would be greatly appreciated. AC