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NTI legacy boiler AOS
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sia
Member Posts: 3
Turned on my boiler and getting an AOS error code. Any tips?
0
Comments
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The flue pressure switch is not closing.
Check the intake and exhaust pipes for blockage. Checked the condensate drain line for blockage.Bob Boan
You can choose to do what you want, but you cannot choose the consequences.0 -
If the vent fan won’t run will it cause this error?0
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Thanks I’ll check for blockages0
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Call a licensed professional. This is not a DYI fix.0
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