Slant Fin B200

L_I_John

My B200 keep timing out with the error codes A01 or A02. I have to keep resetting it. No one knows what the problem is. What can I take out and replace it with?

e it with. It has 5 zones.

109A_5

Were these things checked ?

https://s3.amazonaws.com/s3.supplyhouse.com/manuals/1282657809967/37801_PROD_FILE.pdf

109A_5

Also understanding where the unsuccessful ignition and/or loss of flame happens in the operation sequence may help.

EBEBRATT-Ed

@L_I-John

You don't throw away a perfectly good boiler because it won't run. If the technicians can't find the problem its because they haven't looked.

Check "find a contractor" on this site

And post your location we may know someone that can help.

Are you on Long Island?

109A_5

Also if the gas valve seems to randomly close or just not open, The 120V section of the Argus PHC794-S1 control board could have a failing solder joint and/or relay.