Honeywell SV9541 Smart Valve - 6 and 4 flashes

Howdy All,



I have a question about my furnance.



I have the SV9541 Smart Valve with an ST9160B 1050 Fan Control Board.



I had the unit off the other day because my office is near the furnace and I was on a call.



When I turned it back on the temp had drops a few degrees in the house (we live in WI), and I noticed that the furnace turned on and a while later it was off but the temp hadn't come back up to the set point.



I looked at the valve and I see the status LED flashing 4 then 6 flashes. It could be 6 then 4, not sure how to tell which comes first.



While I was reading in the manual, the furnace restarted and ran for quiet a while (not sure the exact number of minutes). While running the status LED is giving the heartbeat as I would expect.



Then it turned off again and gave the same 4 and 6 flashes. It will continue to run this way indefinitely, I believe.



I checked the pressure switches and they seem fine.



Any thoughts?



Thanks,

Brian

Honeywell SV9541 Smart Valve - 6 and 4 flashes