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Climatemaster Diagnostic Codes
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...
06 Apr, 2017 Comments: 0
Waterfurnace - Fault Codes
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...
19 Apr, 2017 Comments: 0
Trane GAM5 - Status/Error Codes
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...
01 Sep, 2017 Comments: 0
Fujitsu - Error A1
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...
05 Feb, 2022 Comments: 0
York Sensor Resistance Chart
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 ...
17 Nov, 2017 Comments: 0
Climatemaster - Code 5 / LT2 Fault - Cooling
ClimateMaster Heat Pump: Cooling Re: Code 5 / LT2 Fault Code 5 = Low Air Coil Temperature (FP2) The FP2 thermistor temperature must be below the selected low temperature limit setting (30 deg. unclipped) for 30 continuous seconds during a compressor run cycle to be recognized as a FP2...
05 May, 2022 Comments: 0
Climatemaster - Code 2 / High Pressure Fault - Cooling
Climatemaster Geothermal: TT/TS Re: Code 2 / High Pressure Fault - Cooling Code 2 = High Pressure Fault ► There may be (2) Water Pressure Switches wired in series with the refrigerant High Pressure Switch. ► When the high pressure switch opens due to high refrigerant pressures the...
19 Aug, 2020 Comments: 0
York Yorkguard VI Status and Fault Codes
Yorkguard VI will energize the X/L terminal to flash a light at the thermostat to notify the homeowner of a problem with the heat pump. Fault Code Memory: The control will store the last 5 error codes. As new error codes are stored, the oldest is deleted. The stored error codes can be...
07 Nov, 2017 Comments: 0
York Furnace Lockout and Diagnostic Codes
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...
14 Feb, 2017 Comments: 0
Sanyo VRF - Error Code E04
Sanyo Variable Refrigerant Flow Re: Error Code E04 / Fault Code E04 Error Code E04 = Number of detected indoor units does not match the quantity of indoor units set on the outdoor unit control board. Possible Causes (From Most to Least Likely): Indoor Unit(s) Powered Off Break in...
16 Jan, 2017 Comments: 0
White-Rodgers Lockout Codes
WHITE-RODGERS FURNACE CONTROL - LOCKOUT CODES When system lockout occurs, the gas valve is de-energized, the circulator blower is energized at HEAT speed, and, if flame is sensed, the inducer blower is energized. The diagnostic indicator light will flash or glow continuously to indicate system...
16 Jan, 2017 Comments: 0
PTAC Configuration Menu
PTAC Re: CONFIGURATION SETTINGS The control can be configured to operate a wide range of options. The options listed below with the * are the factory default settings. If these are acceptable, then the unit does not require any additional configuration and is fully operable. To configure...
20 Mar, 2017 Comments: 0
Yorkguard IV & V Fault Codes
Yorkguard IV and V Re: Lockout Codes / Fault Codes The Yorkguard IV and V boards both have diagnostic functionality that will energize the X/L terminal to flash a light at the indoor thermostat if abnormal operating conditions occur. Unlike the Yorkguard VI, the number of flashing lights on...
23 Oct, 2020 Comments: 0
FHP - EM015 Diagnostic Codes
Florida Heat Pump: EM015 Re: Diagnostic Codes / Error Codes / Fault Codes The control board in these WSHPs has a Green status light and a Red fault indication light. The Red fault light will flash to indicate fault status. Red Flashes Description 1 High Pressure Switch...
26 Mar, 2018 Comments: 0
Ultra 1 & 2 - Status & Fault Codes
Weil-Mclain Boilers: Ultra Re: Status & Fault Codes The Ultra Series 1 & Series 2 boilers have a 4-digit display for monitoring operating status & fault codes. OPERATING STATUS After the display shows "Stby" for a brief period, the first character shows boiler status,...
30 Jan, 2017 Comments: 0
Climatemaster - Flashing Code 8
CLIMATEMASTER GEOTHERMAL Re: Code 8 Code 8 = Unit Performance Sentinel (UPS) Warning The UPS warning is NOT a Lockout condition. The UPS feature is intended to indicate when the heat pump is operating inefficiently. A UPS condition exists when: In heating mode with compressor...
14 Jun, 2021 Comments: 0
Climatemaster - Code 4 / LT1 Fault - Heating
ClimateMaster Heat Pump: Heating Re: Code 4 / LT1 Fault Code 4 = Low Water Coil Temperature (FP1 or LT1) The LT1 thermistor temperature must be below the selected low temperature limit setting* for 30 continuous seconds during a compressor run cycle to be recognized as a LT1 fault. ...
09 Feb, 2021 Comments: 0
4TWR4 - Flashing Code 4 - Heating
Trane Heat Pump: 4TWR3 Re: Flashing Code 4 Code 4 = 4 trips of the Low Pressure Control 1st LPCO trip = 15 min. Soft lockout 2nd LPCO trip = 30 min. Soft Lockout 3rd LPCO trip = 4 hour (cooling), 18 hour (heating) Soft Lockout 4th LPCO trip = Hard Lockout Qty Possible Causes: ...
29 Jan, 2018 Comments: 0
D013 - Fault Codes
Mammoth Heat Pump: D013 Re: Diagnostic Codes / Error Codes / Fault Codes The control board in these WSHPs has a Green status light. The light will flash to indicate fault/operating status. Flashes Description On Normal Operation 1 High Pressure Switch Fault 2 ...
26 Mar, 2018 Comments: 0
YHM Fault Codes
York Heat Pump: YHM Re: Fault Codes The fault and status codes for the YHM heat pump are displayed on the small control board mounted beneath the large inverter board. LED Seg 1 Seg 2 Description Solid 0 0 Control Failure Operational Faults Solid 0 1 ...
25 Sep, 2017 Comments: 0
R22 Cooling - Low Suction Pressure
Heat Pump: Cooling Re: Low Suction Pressure A heat pump or air conditioner runs with a lower-than-normal suction pressure. Customer typically reports low or no cooling. Qty Possible Causes: Low Refrigerant Charge 1 Bad Expansion Valve Low/No Airflow ...
29 Sep, 2017 Comments: 0
RPNE - Diagnostic Codes / Fault Codes
Rheem Heat Pump: RPNE Re: Diagnostic Codes / Fault Codes The defrost board uses two LEDs for diagnostics. The LEDs flash a specific sequence according to the condition. DIAGNOSTIC CODES: LED 1 LED 2 Description Alt Flashing Anti-Short-Cycle Delay Off Off No 24V...
16 Mar, 2021 Comments: 0
YP9C - Diagnostic Codes/Fault Codes
York Gas Furnaces: YP9C Re: Diagnostic/Fault Codes These York modulating 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: 1 Green Normal Operation - no...
08 Feb, 2019 Comments: 0
Error Code 40 on the Thermostat
Honeywell Thermostats: VisionPro IAQ Re: Thermostat Shows Error 40 Some York heat pumps have a diagnostic board that will flash a light or display "Error 40" at the thermostat when a fault condition occurs. Error Code 40 is displayed on a Honeywell VisionPro IAQ thermostat when it receives...
22 Mar, 2017 Comments: 0
S8610U Diagnostic Codes / Fault Codes
Honeywell: S8610U Re: Diagnostic Codes / Fault Codes # of Flashes Description Off No Call for Heat Fast Flash Power-up - Internal Check Heartbeat Normal Operation - Heating 2 Pilot flame not detected - 5 min retry delay 3 Flame failed during a...
09 Nov, 2021 Comments: 0