Geothermal Heat Pump: Climatemaster Re: Diagnostic Codes CXM Board - Most older Climatemaster Geothermal heat pumps use the CXM Control Board. The CXM board has a diagnostic function that will cause the unit to go into a "lockout" if an abnormal operating condition occurs. When the CXM...

Fujitsu Mini-Split Re: Error A1 Error Code A1 = High Compressor Discharge Temperature Also indicated on the control board by 10 Green flashes and 1 Orange flash. Qty Possible Causes: 3 Low Refrigerant Charge Bad Sensor CHECKOUT: 1. Check Unit...

Geothermal Heat Pump: Waterfurnace Re: Diagnostic Codes These units can have either an Aurora Base Control (ABC) or an Aurora Expansion Board (AXB). The ABC board has a diagnostic function that will cause the unit to go into a "lockout" if an abnormal operating condition occurs. When the...

York Gas Furnaces Re: Lockout Codes Most York gas furnaces have a control board inside the furnace blower compartment that will flash a diagnostic code that shows the operating status of the furnace. Diagnostic Codes: Slow Green Normal Operation - no call for heat Slow...

Trane Air Handler: GAM5 Re: Status Codes / Error Codes / Fault Codes EVC STATUS LED Flash Description 1 Cool Mode - No Active Call 3 Cool Mode - Active Call for Cooling or Defrost 4 Heat Mode or Off - No Active Call 6 Heat Mode - Active Call for...

Sensor Resistance All of York's sensors are the same resistance - 10K Ohm. Temp Ohms Temp Ohms Temp Ohms Temp Ohms 0 85,371 50 19,896 100 5,827 150 2,041 5 75,230 55 17,434 105 5,208 155 1,854 10 62,499 60 15,310 110 ...

Package Unit: D2NP Re: Code 2 CODE 2 = Pressure switch "Open" with the inducer motor energized. Qty Possible Causes: 1 Bad Inducer Motor Bad Pressure Switch 1 Clogged Pressure Port Item Stuck in Inducer Wheel Bad Ignition Control Board ...

Trane Package Unit: 4YCC4 Re: Flashing Code 3 Code 3 = Pressure Switch Fault A Code 3 will be generated in either of the following conditions: The pressure switch failed to close with the inducer motor energized. The pressure switch failed to re-open with the inducer motor de-energized. ...

York Heat Pump: YZF Re: High Pressure Lockout - Last Mode Heat Pump (Cooling) The heat pump was running in cooling mode and the high pressure switch tripped. A High Pressure Lockout is indicated by the following LED pattern on the outdoor unit control board: Green = Off Red = 2 Flashes ...

Goodman Gas Furnace: GCSS92 Re: Flashing Code 4 Code 4 = Limit Circuit Open The Limit Circuit consists of two Manual-Reset* auxiliary limits (on each side of the blower housing) and one Auto-Reset primary limit (above the burners). * The diagram and installation manual show Manual-Reset...

Goodman Gas Furnace: GCSS92 Re: Lockout Codes # of Flashes Description Off No Power or Faulty Control On Normal Operation 1 Ignition lockout (3 failed tries) - 1hr Auto Reset 2 Pressure switch stuck closed 3 Pressure switch stuck open 4 ...

Goodman Gas Furnace: GMS8/GMS9 OR GCS8/GCS9 Re: Lockout Codes # of Flashes Description Off No Power or Faulty Control On Normal Operation 1 Ignition lockout (3 failed tries) - 1hr Auto Reset 2 Pressure switch stuck closed 3 Pressure switch stuck...