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York Air Handler: Flashing Code 4
York Air Handler: MP, MX, MV, AHP, AHX, AVY Re: Fan Runs Continuous, Flashing Code 4 Code 4 = Extended Limit Trip The control board in the air handler monitors the limit switch(es) in the aux heaters. If the limit switch opens for a long duration (fault code 4), the control will energize...
4 Oct, 2024
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Climatemaster - Flashing Code 6
ClimateMaster Heat Pump: Heating / Cooling Re: Code 6 Code 6 = Condensate Overflow The condensate overflow sensor must sense overflow level for 30 continuous seconds to be recognized as a CO fault. Condensate overflow will be monitored at all times. Qty Possible Causes: ...
20 Sep, 2024
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Heat Pump - High Head Pressure (Heating)
Heat Pump: Heating Re: High Discharge Pressure / High Head Pressure As the system runs in the heating mode, the discharge pressure exceeds the normal operating pressure. R22 System Normal Head Pressure = 175 - 250 psig High Head Pressure = Above 275 psig R410A System Normal Head...
20 Sep, 2024
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TUD/TDD - Flashing Code 3
Trane Gas Furnace: TUD1/TDD1 Re: Flashing Code 3 Code 3 = Pressure switch fault A Code 3 will result from either of the following conditions: Pressure switch contacts "closed" when they should be open. Pressure switch contacts "open" when they should be closed. ► If the pressure switch is...
9 Sep, 2024
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TUD/TDD - Flashing Code 2
Trane Gas Furnace: TUD/TDD Re: No Heat - Code 2 Code 2 = 3 Failed Ignition Attempts Qty Possible Causes: 1 Bad Glow Plug Dirty Flame Sensor Clogged Burners No or Low Gas Pressure Bad Gas Valve Bad Ignition Control ...
9 Sep, 2024
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GMS9/GCS9 - Flashing Code 4
Goodman Gas Furnace: GMS9/GCS9 Re: Flashing Code 4 (Assuming original control board) Code 4 = Limit Circuit Open If the Limit Circuit opens, the burners will be de-energized and the air circulation and vent blower will be turned on until the Limit Circuit closes. The diagnostic light code...
21 Aug, 2024
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Climatemaster - Code 2 / High Pressure Fault - Cooling
Climatemaster Geothermal: TE Re: Code 2 / High Pressure Fault - Cooling Code 2 = High Pressure Fault When the high pressure switch opens due to high refrigerant pressures the compressor relay is de-energized immediately since the high pressure switch is in series with the compressor contactor...
30 Jul, 2024
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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...
16 Jul, 2024
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Gas Furnace - Won't Come On/No Heat
Gas Furnaces Re: Furnace Won't Come On / No Heat This condition is generally reported two different ways by the customer: "The furnace won't do anything." - Indicating that there is no activity from the furnace on a call for heat. "The furnace makes a noise, but it never blows-out hot...
29 May, 2024
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Aaon WSHP Lockout Codes
Aaon Water-Source Heat Pump: WHA Re: Diagnostic Codes / Error Codes / Fault Codes The Red fault light will flash to indicate fault status. Red Flashes Description 1 High Pressure Switch Fault 2 Emergency Shutdown 3 Auxiliary Alarm 4 Condensate Overflow...
15 May, 2024
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Climatemaster - Code 3 / Loss of Charge
Climatemaster Geothermal: Heating / Cooling Re: Code 3 / Loss of Charge Code 3 = Low Pressure Fault The low pressure switch must be open and remain open for 30 continuous seconds during an “on” cycle to be recognized as a low pressure fault. If the low pressure switch is open for 30...
9 May, 2024
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YEE - Fault Code 5 (Heating)
York Heat Pump: YEE Re: Low Suction Pressure - Code 5 (Heating) CODE 5 = Low Pressure Switch Opened (2x in 6 hours) Qty Possible Causes: 2 Low Refrigerant Charge Bad Expansion O/D Valve Bad Pressure Switch Not Defrosting CHECKOUT: 1....
30 Apr, 2024
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TM9X/TM9E - Flashing Code 7
York Gas Furnace: TM9X/TM9E Re: Flashing Code 7 Code 7 = Failure to Sense Flame (3 Failed Ignition Attempts) Qty Possible Causes: 1 Dirty Flame Sensor 1 Bad Glow Plug 1 Clogged Burners 1 No or Low Gas Pressure 1 Bad Gas Valve Bad...
25 Apr, 2024
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TUH2/TDH2 - Diagnostic Codes
Trane Gas Furnaces: TUH2/TDH2 Re: Furnace Lockout Codes / Diagnostic Codes INTEGRATED FURNACE CONTROL - ERROR CODES Flashing Slow Normal - No call for heat Flashing Fast Normal - Call for heat On Replace Control Off Check Power 2 Flashes Lockout...
10 Apr, 2024
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GR6GD Fault Codes/Status Codes
Nordyne / Partners Choice - GR6GD Re: Lockout Codes / Status Codes Red Light Status Description 1 Limit Circuit Open 2 Pressure switch stuck open 3 Pressure switch stuck closed 4 Ignition failure 5 Reversed Polarity Continuous Flash ...
9 Apr, 2024
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TG9S/GY9S - Flashing Code 3
York 90% Gas Furnace: TG9S Re: Flashing Code 3 Code 3 = Furnace Pressure Switch failed to close on a call for heat. ►The code description on the blower door says, "Vent or Termination Problem" which is a possible cause, but not the most likely. This gas furnace has two pressure switches: ...
5 Apr, 2024
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PAR-FL32MA - Mode Selection Adjustment
Mitsubishi Re: Remote Control - Mode Selection The number of controlled Modes is adjustable through the remote control. Follow the following steps to set the Mode options. Step 1: Press the SET button with a pointed but not sharp object. Make sure that the remote controller display...
20 Mar, 2024
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Yorkguard VI - Low Discharge Temperature (Heating)
York Heat Pump: Yorkguard VI Re: Low Discharge Temperature (Heating) The status lights on the module will indicate as follows: Red = On, Green = 6 Flash. If, after energizing the compressor contactor for 1 hour, the Yorkguard module senses a compressor discharge temperature lower than 90...
19 Mar, 2024
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. ...
18 Mar, 2024
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Bosch M15G - P2 Fault / H5 Fault (Heating)
Heat Pump: Bosch M15G Re: P2 Fault / H5 Fault (Heating Mode) P2 Fault = Low Pressure Protection (Heating or Cooling) H5 Fault = P2 Fault occurred 5 times in 100 minutes or runtime (Requires Power Reset) Qty Possible Causes: Low Refrigerant Charge Bad O/D Fan Motor...
11 Mar, 2024
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Bosch - Fault Codes
Bosch Heat Pump: M15, M18, M20 Re: Fault Codes / Status Codes Fault Code Display Fault Code Fault Description C3 The coil sensor (T3) is seated fault in Cooling E4 Temperature Sensor Fault (T3, T4, T3L, T5 or TF) E5 High or Low Voltage Protection E6...
11 Mar, 2024
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Bosch - Parameter Point Check Table
Bosch Heat Pump: M15, M18, M20 Re: Parameter Point Check Table To display system parameters, press the “Check” button to index through the series of parameters available. The first time you press the “Check” button, it will display the sequence, and after 1 second it will display the value of...
11 Mar, 2024
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AHX/MX Air Handler - Flashing Code 3 - Fan Running Continuous
York Air Handler: AHX/MX Re: Flashing Code 3 - Fan Running Continuous The control board in the air handler monitors the limit switch in the aux heaters. If the limit switch opens multiple times during a single call for electric heat the control will flash a Code 3 and energize the blower...
27 Feb, 2024
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TM9Y - Flashing Code 3
York Gas Furnace: TM9Y Re: Flashing Code 3 Code 3 = The normally open (PS1 or PS3) pressure switch contact did not close after the inducer was energized. ► This is a "Soft Lockout" which will automatically reset after 1 hour. ► There are 3 pressure switches on this furnace. PS1 (1st Stage...
19 Feb, 2024
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TM9Y - Flashing Code 6
York Gas Furnace: TM9Y Re: Flashing Code 6 Code 6 = Pressure switch opened (Code 3) 4 times during a run cycle. ► This is a "Soft Lockout" which will automatically reset after 1 hour. ► There are 3 pressure switches on this furnace. PS1 (1st Stage Switch usually .90") and PS3 (Condensate...
19 Feb, 2024
Comments: 0
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