ഉൽപ്പന്നം കഴിഞ്ഞുview
The Armstrong R40403-003 blower control circuit board is designed to replace previous versions R40403-001, R40403-002, and ST9120A, B, or C blower controls. This board manages a 2-speed indoor blower motor and a single-speed inducer motor. It processes inputs from the thermostat (W, Y, and G terminals), pressure switch, and high-temperature limit switches. The control also features user-selectable blower delays via DIP switch settings. A 5-amp replaceable automotive-type fuse protects the 24-volt circuit.
Image 1: The Armstrong R40403-003 Blower Control Circuit Board. This image displays the front view of the circuit board, showing various electronic components, relays, terminals, and DIP switches.
സുരക്ഷാ വിവരങ്ങൾ
Always disconnect power to the furnace at the main breaker before attempting any installation, maintenance, or troubleshooting. Failure to do so can result in electrical shock, personal injury, or death. Installation should only be performed by qualified personnel. Ensure all wiring connections comply with local and national electrical codes.
- വൈദ്യുതി വിച്ഛേദിക്കൽ: Turn off power at the circuit breaker before handling the board.
- സ്റ്റാറ്റിക് ഡിസ്ചാർജ്: Handle the circuit board by its edges to avoid damage from static electricity.
- ഫ്യൂസ് സംരക്ഷണം: The 24-volt circuit is protected by a 5-amp automotive-type fuse. Replace only with a fuse of the same rating.
സജ്ജീകരണവും ഇൻസ്റ്റാളേഷനും
This section provides general guidelines for replacing the Armstrong R40403-003 blower control board. Refer to your furnace's specific wiring diagram for detailed instructions.
- പവർ ഓഫ്: Ensure all power to the furnace unit is disconnected at the main electrical breaker. Verify with a voltagഇ ടെസ്റ്റർ.
- Access Old Board: Locate and access the existing blower control board within your furnace.
- ഡോക്യുമെന്റ് വയറിംഗ്: Before disconnecting any wires, take clear photographs of all connections to the old board. Label each wire if necessary.
- വയറുകൾ വിച്ഛേദിക്കുക: Carefully disconnect all wires from the old control board.
- പഴയ ബോർഡ് നീക്കം ചെയ്യുക: പഴയ ബോർഡ് അതിന്റെ മൗണ്ടിംഗിൽ നിന്ന് അഴിക്കുകയോ അഴിക്കുകയോ ചെയ്യുക.
- Mount New Board: Secure the new Armstrong R40403-003 board in the same location using the existing mounting hardware.
- വയറുകൾ ബന്ധിപ്പിക്കുക: Reconnect all wires to the new board, matching them precisely to the documented connections from the old board. Pay close attention to the transformer leads (C and X terminals). The X lead from the old board typically connects to the XFRMR terminal on the new board.
- DIP സ്വിച്ച് ക്രമീകരണങ്ങൾ: Adjust the DIP switches on the new board to match the settings of your previous board or according to your furnace's specifications for blower delays.
- കണക്ഷനുകൾ പരിശോധിക്കുക: Double-check all wiring connections for security and correctness.
- പവർ പുന ore സ്ഥാപിക്കുക: Once all connections are verified, restore power to the furnace at the main breaker.
- ടെസ്റ്റ് ഓപ്പറേഷൻ: Initiate a heating or cooling cycle to confirm proper operation of the furnace and blower.
Image 2: The Armstrong R40403-003 Blower Control Circuit Board in its packaging. This image shows the brown cardboard box with a product label indicating "BLOWER CONTROL" and the model number R40403-003.
പ്രവർത്തന തത്വങ്ങൾ
The R40403-003 board functions as the central control for the furnace's blower and inducer motors. It receives signals from the thermostat to initiate heating or cooling cycles. The board then activates the appropriate motors and monitors safety limits such as the pressure switch and high-temperature limit switches to ensure safe operation. User-selectable DIP switch settings allow for customization of blower delays, which control how long the blower runs after the heating or cooling call ends, helping to maximize system efficiency and comfort.
Blower Delay Settings
The board features DIP switches to adjust blower delays. Consult your furnace manual or the wiring diagram provided with the board for specific delay settings and their corresponding switch configurations. Typical settings include delays for fan off after heating, and fan on/off for cooling cycles.
മെയിൻ്റനൻസ്
The Armstrong R40403-003 blower control board is designed for reliable operation and generally requires minimal maintenance. However, periodic checks of the furnace system are recommended.
- ഫ്യൂസ് പരിശോധന: Periodically inspect the 5-amp automotive-type fuse on the board. If the fuse is blown, replace it only with a fuse of the exact same rating (5 amp). A blown fuse often indicates an underlying electrical issue that should be investigated.
- വയറിംഗ് കണക്ഷനുകൾ: Annually, or during routine furnace maintenance, inspect all wiring connections to the board to ensure they are secure and free from corrosion.
- ശുചിത്വം: Keep the area around the circuit board clean and free from dust and debris, which can impede proper function or lead to overheating.
ട്രബിൾഷൂട്ടിംഗ്
This section provides basic troubleshooting steps for common issues related to the blower control board. For complex problems, consult a qualified HVAC technician.
| പ്രശ്നം | സാധ്യമായ കാരണം | പരിഹാരം |
|---|---|---|
| Furnace not starting / No power to board | Blown fuse on board, tripped circuit breaker, loose wiring connection. | Check and replace 5-amp fuse. Reset circuit breaker. Inspect and secure all power connections. |
| ബ്ലോവർ മോട്ടോർ പ്രവർത്തിക്കുന്നില്ല | Incorrect thermostat input, faulty pressure switch, high-limit switch tripped, motor issue, board malfunction. | Verify thermostat settings. Check pressure switch and high-limit switch for continuity. Consult HVAC technician for motor or board diagnosis. |
| ബ്ലോവർ തുടർച്ചയായി പ്രവർത്തിക്കുന്നു | Thermostat fan setting "ON", stuck relay on board, incorrect DIP switch setting. | Set thermostat fan to "AUTO". Check DIP switch settings for blower delays. If issue persists, board may need replacement. |
| Inducer motor not running | Faulty inducer motor, pressure switch issue, board malfunction. | Check inducer motor for power. Verify pressure switch operation. If necessary, consult a professional. |
സ്പെസിഫിക്കേഷനുകൾ
Key technical specifications for the Armstrong R40403-003 Blower Control Circuit Board:
- മോഡൽ നമ്പർ: R40403-003
- Replaces Models: R40403-001, R40403-002, 20054502, ST9120A, B, C
- ഓപ്പറേറ്റിംഗ് ലൈൻ വോളിയംtage: 85 മുതൽ 135 വരെ VAC, 50/60Hz
- Secondary Control Voltage: 18.0 മുതൽ 30.0 വരെ VAC, 50/60Hz
- Maximum Blower Loading: 15FLA, 30LRA @ 120 VAC; 7.5FLA, 15LRA @ 240 VAC
- Maximum Inducer Loading: 3FLA, 10LRA @ 120 VAC; 1.5FLA, 5LRA @ 240 VAC
- ഫ്യൂസ് സംരക്ഷണം: 5 Amp replaceable automotive type fuse (24-volt circuit)
- അളവുകൾ: ഏകദേശം 7.8 x 6.3 x 3 ഇഞ്ച്
- ഭാരം: ഏകദേശം 0.16 ഔൺസ്
- നിർമ്മാതാവ്: ആംസ്ട്രോങ്
വാറൻ്റിയും പിന്തുണയും
Specific warranty information for the Armstrong R40403-003 Blower Control Circuit Board is not provided in this manual. For details regarding warranty coverage, terms, and conditions, please refer to the product packaging or contact Armstrong customer support directly. For technical assistance or professional installation, it is recommended to consult a certified HVAC technician.
You may visit the official Armstrong website or contact their customer service for further support.
- നിർമ്മാതാവ്: ആംസ്ട്രോങ്
- Webസൈറ്റ്: www.armstrongair.com (General Armstrong HVAC site, as no specific product support link is provided)
