FSHnFRK
12-27-2007, 03:01 PM
1) I have a Lennox HarmonyIII system with 2 zones. I noticed sometimes when the unit goes into de-ice and the stat satisfies while in de-ice, the unit comes back on (20 min. or so) with a call for heat and it starts in de-ice and stays in de-ice for about a minute or so than comes out. Should it start in de-ice, shouldnt it have timed out by than?
2) I have also checked the Harmony board for any diagnostic codes and there is one that says insufficient heat?
3) I have also noticed on a buddies unit which is identical he has a secondary Hi Pressure switch on his unit. Why a second Hi Pres switch?? On the Harmony board there is a jumper between two terminals where the Hi Pres would wire in (there is a factory hi pres switch) wonder why it is jumpered??
AHU M# CBX32MV-048-230-6-03
COND. M3 HPXA12-048-230-03
THANKS!
2) I have also checked the Harmony board for any diagnostic codes and there is one that says insufficient heat?
3) I have also noticed on a buddies unit which is identical he has a secondary Hi Pressure switch on his unit. Why a second Hi Pres switch?? On the Harmony board there is a jumper between two terminals where the Hi Pres would wire in (there is a factory hi pres switch) wonder why it is jumpered??
AHU M# CBX32MV-048-230-6-03
COND. M3 HPXA12-048-230-03
THANKS!