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...

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...

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...

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...

York Package Unit: DNQ Re: Variable Speed Blower Not Running - Heating The unit is calling for either Heating, but the indoor blower is not operating. Qty Possible Causes: 4 Bad Blower Motor/Controller Bad ECM Control Board Tripped Breaker Bad/Burnt...

York Package Unit: DNQ Re: Variable Speed Blower Not Running - Cooling The unit is calling for either Fan or Cooling, but the indoor blower is not operating. Qty Possible Causes: 4 Bad Blower Motor/Controller Bad ECM Control Board Tripped Breaker ...

York Package Unit: DNQ Re: Troubleshooting Variable Speed Blower Motor These package units use a 16-Pin Variable Speed Motor Control Module. Pin Designation 1 24V Common 2 W1 3 24V Common 4 DELAY Setting 5 COOL Setting 6 Y/Y1 7...

Honeywell Thermostat: TH8320R & TH8321R VisionPro Re: Customer-Created Password The customer has the option to create a new password. From the thermostat Home Screen press the Menu tab. Scroll down to highlight Security Settings and press Select. Scroll down to Create Password and...

York Package Gas/Electric: PCG4 Re: Flashing Code 7 Code 7 = Failure to Sense Flame (3 Failed Ignition Attempts) Qty Possible Causes: 1 Dirty Flame Sensor Bad Glow Plug 1 Clogged Burners 1 No or Low Gas Pressure 1 Bad Gas Valve Bad...