Responded to no heat thermostat calling for heat. 66 in home 73 set temperature. Found code 32 for pressure switch found inducer pulling 0-3 inWC customer has exterior of home being panted. Painters covered up concentric kit not allowing proper exhaust. Removed cover per customers request to restore heat. Furnace cycled on properly without fault. 0 ppm co in supply. Dirty 16254 filter. Replaced 10/15. replaced customer supplied filter. No further issues.