York Package Units: DNZ Re: Fault Codes While in lockout, the control board keeps the pilot gas valve, main gas valve and induced draft motor de-energized. Lockouts due to failed ignition or flame losses may be reset by removing the call for heat (W1) for more than 1 second, but less than 20...

Package Unit: DNZ Re: Flashing Code 2 These units have one control board (EMCB) which controls all unit functions. ► Any heating diagnostics will be displayed on the EMCB. CODE 2 = Pressure switch "Open" with the inducer motor energized. Qty Possible Causes: 1 Bad Inducer...

Package Unit: DNZ Re: Flashing Code 8 These units have one control board (EMCB) which controls all unit functions. ► Any heating diagnostics will be displayed on the EMCB. CODE 8 = Flame sensed with gas valve OFF. If flame is sensed for longer than 4.0 seconds during a period when the...