Customer had no heat in home, thermostat calling for heat and furnace had a error code for E228 high pressure switch failed to calibrate, pulled off drain tube to trap which was plugged, which could have been from all the snow and rain, fired furnace 5 times and fired each time, house got up to temperature to 74 which house was 67 upon arrival, customer have a pressure switch beginning to stick, no error codes and system operational. Checked exhaust outside which was blowing, also performed combustion test just to be sure which everything was normal.