Freedom90 error codes

pmcgvc

Hi
My American Standard freedom 90,
didn't come on yesterday morning, went to take a look a few hours later and it came on but gives me 3 blinking leds error codes.
Then when it runs I get 4 blinking leds and then a steady led.
It ran fine for hours and then nothing.
Any ideas.
Thank you
Geoff,

1acman

Here are the error codes, what is the status now?


INTEGRATED FURNACE CONTROL ERROR FLASH CODES
Flashing Slow ---Normal - No call for Heat
Flashing Fast ---Normal - Call for Heat
Continuous ON --Replace IFC
Continuous OFF --- Check Power
2 Flashes ---System Lockout (Retries or Recycles exceeded)
3 Flashes ---Draft Pressure Error - Possible problems: a) Venting problem b) Pressure switch problem c) Inducer problem
4 Flashes ---Open Temperature Limit Circuit
5 Flashes ---Flame sensed when no flame should be present
6 Flashes ---115 volt AC power reversed, poor grounding or system voltage too low
7 Flashes ---Gas valve circuit error
8 Flashes ---Low flame sense signal
Check Ignitor Circuit and Line "N" to 24VAC "Common" voltage (≤ 2 volts)
9 Flashes ---[possible grounding problem]
18-CD19D5-25

pmcgvc

Hi Thank you so much for this.
The strangest thing is that when I run my clothes dryer which is electric the heat comes on. The thermostat is not anywhere near the dryer but there is a water vent hose running along or near the dryer vent exhaust pipe, both are in a crawl space along with the furnace.

Also the air intake and CO out pipe (?) are above snow outside the house. The other drafty holes are covered by snow. This holes once had pipes or something running through them.Maybe that would explain the draft issue?
I've had this unit five years and colder temps but have never had any issues.
I will clean out those plastic hoses and see if that helps.
Thanks so much again.
Geoff

pmcgvc

Hi
My tech., buddy has not been able to get to the furnace yet to check on those codes.
However has anyone got any clues as to why this unit kicks on when I turn my clothes dryer on?
What would that indicate?
Thanks again.

1acman

Could just be a draft created by the dryer while running. Maybe the t-stat has a draft where the wire penetrates the wall. Does it run if you have the t-stat switched to the off position?

pmcgvc

Hi Thanks
No it doesn't run if the stat is off. It has been running normally for a day now. My tech guy is coming to take a look see in awhile.
I'll keep you posted if I ever get to the bottom of it. Thank you.

pmcgvc

Hi
Where would the pressure hose and sensor be located? Of course I can't find the manual
Thanks again.