1. Uvod
This instruction manual provides essential information for the installation, operation, and maintenance of the Trane White Rodgers Upgraded Furnace Control Circuit Board, model 50A55-486. This board is designed as a direct replacement for the older part # 50A55-486 and is compatible with Trane and American Standard furnaces. Please read this manual thoroughly before proceeding with installation or service.
2. Sigurnosne informacije
WARNING: Electrical shock hazard. Disconnect all power to the furnace before installing or servicing this control board. Failure to do so can result in serious injury or death.
- Always ensure the main power supply to the furnace is turned off at the circuit breaker or fuse box before beginning any work.
- Only qualified technicians should perform installation and service.
- Verify all wiring connections are secure and correct before restoring power.
- Nemojte zaobići nikakve sigurnosne uređaje.
3. Proizvod je gotovview
The White Rodgers 50A55-486 is an upgraded furnace control circuit board designed to manage the various functions of your furnace, including ignition, blower operation, and safety protocols. It serves as a direct replacement for the original 50A55-486 part.

Figure 1: White Rodgers 50A55-486 Furnace Control Circuit Board. This image displays the top view of the circuit board, showing various terminals, relays, and components. The board is white with green circuit traces and features multiple connection points for furnace wiring.
4. Instalacija i podešavanje
- Isključivanje struje: Before starting, ensure all electrical power to the furnace is completely disconnected at the main service panel.
- Pristup kontrolnoj ploči: Pronađite i otvorite pristupnu ploču peći kako biste otkrili postojeću upravljačku ploču.
- Dokumentujte postojeće ožičenje: It is highly recommended to take clear photographs of all wiring connections to the old control board before disconnecting them. Labeling wires can also prevent errors during reinstallation.
- Uklonite staru ploču: Carefully disconnect all wires and mounting screws from the old control board. Note that the new board may have slightly different component layouts or terminal positions compared to the original.
- Instalirajte novu ploču: Mount the new White Rodgers 50A55-486 control board in the same location as the old one. Secure it with appropriate fasteners.
- Povežite ožičenje: Refer to your documented wiring (photos/labels) and the wiring diagram provided with your furnace or the new control board. Connect all wires to their corresponding terminals on the new board. Pay close attention to the "TWIN Y W R G C" terminals and "LINE NEUTRAL" connections.
- Potvrdite veze: Double-check all connections for tightness and correctness. Ensure no wires are loose or incorrectly placed.
- Vrati snagu: Close the furnace access panel. Restore electrical power to the furnace at the main service panel.
- Probni rad: Initiate a heating cycle to verify proper furnace operation.
Note: Some users have reported that while this board is a direct replacement, the physical layout of terminals might differ slightly from older versions. Always cross-reference with your furnace's wiring diagram.
5. Operacija
The furnace control board manages the sequence of operations for your heating system. A typical heating cycle involves:
- Thermostat Call for Heat: When the thermostat calls for heat, the control board initiates the heating sequence.
- Aktivacija induktora motora: The inducer motor starts to vent combustion gases.
- Pressure Switch Closure: Once sufficient draft is established, the pressure switch closes, signaling the control board to proceed.
- Redoslijed paljenja: The igniter is energized, followed by the opening of the gas valve.
- Detekcija plamena: The control board verifies the presence of a flame.
- Aktivacija motora ventilatora: After a short delay, the main blower motor starts to distribute heated air.
- Heating Cycle Completion: When the thermostat's set temperature is reached, the gas valve closes, the igniter de-energizes, and after a cool-down period, the blower motor shuts off.
Video 1: Krajview of a Furnace Control Circuit Board. This video provides a visual demonstration and explanation of a furnace control board, highlighting its components and general function within a heating system. While the specific model shown may vary, the operational principles are similar.
6. Održavanje
Regular maintenance helps ensure the longevity and efficient operation of your furnace and its control board.
- Godišnja inspekcija: Have a qualified HVAC technician inspect your furnace annually.
- čistoća: Keep the area around the furnace clean and free of dust and debris. Dust accumulation on the control board can lead to overheating or malfunctions.
- Integritet ožičenja: Povremeno provjeravajte ima li labavih ili korodiranih spojeva ožičenja.
- Zamjena filtera zraka: Regularly replace or clean your furnace's air filter to ensure proper airflow and prevent strain on the system.
7. Otkrivanje problema
The control board often includes an LED indicator to assist with troubleshooting. Refer to the specific diagnostic codes for your furnace model, which are typically found on the furnace door or in your furnace's manual.
Common Issues and Potential Solutions:
- Bez vrućine:
- Provjerite postavke termostata.
- Provjerite napajanje peći.
- Inspect the furnace filter for blockage.
- Provjerite ima li isključenih prekidača ili pregorjelih osigurača.
- Observe the LED indicator for diagnostic codes.
- Ventilator ne radi:
- Ensure the thermostat is set to "AUTO" or "ON" as desired.
- Check for obstructions in the blower compartment.
- Listen for any unusual noises from the blower motor.
- Intermitentni rad:
- Could indicate a loose connection or a failing component.
- Provjerite pravilno uzemljenje.
If you are unable to resolve an issue, contact a qualified HVAC technician for assistance.
8. Specifikacije
| Feature | Detalj |
|---|---|
| Brand | Trane |
| Naziv modela | 50A55-486 |
| Broj dijela | OEM Upgrd Replm. for Part # 50A55-486 |
| Težina artikla | 12.6 unce |
| Dimenzije proizvoda | 4 x 4 x 6 inča |
| Vrsta instalacije | Screw-in or Snap-in |
| Vrsta materijala | Bakar |
| Kontrolna konzola | Dugme (Note: This specification seems generic and may not directly apply to the circuit board itself, but rather the furnace it controls.) |
| Boja | Bijelo |
| Datum prve dostupnosti | 4. juna 2010 |
9. Garancija i podrška
For warranty information and technical support, please refer to the documentation provided with your specific product packaging or contact the manufacturer directly. As this is a replacement part, warranty terms may vary.





