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...

Honeywell Thermostat: TH4110U T4 Pro Re: Installer Setup Options To enter Installer Setup: Press and hold the "Center" button and the "+" button together for 3 seconds. Press "Select" to enter Setup. Press "Select" to cycle through setup options. Press "+" or "-" to change values. Press...

Trane Gas Furnace: TUH1/TDH1 Re: Flashing Code 3 Code 3 = Pressure switch fault ► This furnace uses a dual-hose (differential pressure) pressure switch. You need to monitor both hoses at the same time to see actual working pressure. A Code 3 will result from either of the following conditions: ...

Nordyne Gas Furnace: G6RC/FG6RC Re: No Heat - Flashing Code 4 Code 4 = Three consecutive failed ignition attempts (failed to sense flame). Qty Possible Causes: Dirty Flame Sensor 3 Bad Glow Plug Clogged Burners No or Low Gas Pressure 1 Bad...

Heil N95ES Gas Furnaces Re: Lockout Codes / Diagnostic Codes Each of the following status codes is a Single or 2-digit number. ► The first digit is determined by the number of SHORT flashes and the second digit is determined by the number of LONG flashes. ► For Example: 1-Short Flash,...

York Package Unit: PG3 Re: Status Codes / Diagnostic Codes These York package units have a control board inside the unit control compartment that will flash a diagnostic code that shows the operating status of the unit. Status/Diagnostic Codes Status LED A2L LED Condition ...

Nordyne Gas Furnace: G6RC Re: Flashing Code 1 Code 1 = Limit switch open If the limit control opens, the burners will be de-energized and the air circulation and vent blower will be turned on until the limit closes. The diagnostic light code for this is one short flash followed by a pause. ...