1. Pengenalan
This manual provides essential information for the proper installation, operation, and maintenance of the Lennox OEM Replacement Furnace Control Board, model 103085-02. This control board is designed to replace original equipment manufacturer (OEM) parts in compatible Lennox furnace systems. Please read this manual thoroughly before attempting any installation or service.
2. Maklumat Keselamatan
AMARAN: Bahaya Kejutan Elektrik. Putuskan sambungan kuasa sebelum diservis.
- Installation and servicing of heating, ventilation, and air conditioning (HVAC) equipment can be hazardous due to electrical components and sharp edges. Only qualified service personnel should install, repair, or service HVAC equipment.
- Always disconnect the main electrical power to the furnace before installing or servicing the control board to prevent electrical shock.
- Pastikan semua sambungan pendawaian selamat dan mematuhi kod elektrik tempatan dan nasional.
- Pakai peralatan pelindung diri (PPE) yang sesuai, seperti cermin mata keselamatan dan sarung tangan, semasa pemasangan.
- Sahkan bahawa papan gantian serasi dengan model relau khusus anda sebelum pemasangan.
3. Produk Lebihview
The Lennox OEM Replacement Furnace Control Board 103085-02 is a critical component responsible for managing the operational sequences of your furnace. It controls various functions including ignition, fan operation, and safety limits, ensuring efficient and safe heating. This board is a direct replacement for the original part, designed to restore full functionality to your HVAC system.

Rajah 1: Lennox OEM Replacement Furnace Control Board 103085-02. This image displays the circuit board with various electronic components, relays, and terminal blocks for wiring connections. Key features include multiple relays for controlling different furnace functions, a fuse for circuit protection, and clearly labeled terminal blocks for power, thermostat, and component connections.
4. Persediaan dan Pemasangan
Installation of this furnace control board should only be performed by a qualified HVAC technician. Incorrect installation can lead to property damage, serious injury, or death. The following steps are general guidelines; always refer to your specific furnace model's service manual for detailed instructions.
- Pemutusan Kuasa: Matikan semua kuasa elektrik ke relau di panel servis utama. Sahkan kuasa dimatikan menggunakan volumtage meter.
- Papan Kawalan Akses: Cari dan buka panel akses relau untuk mendedahkan papan kawalan sedia ada.
- Pendawaian Dokumen: Before disconnecting any wires, take clear photographs of all wiring connections to the existing board. Label each wire and its corresponding terminal for accurate re-connection.
- Putuskan Sambungan Wayar: Berhati-hati tanggalkan semua wayar dari papan kawalan lama.
- Keluarkan Papan Lama: Tanggalkan papan kawalan lama daripada perumahnya. Perhatikan orientasinya.
- Pasang Papan Baharu: Mount the new Lennox 103085-02 control board in the same position as the old one.
- Sambung semula Pendawaian: Using your photographs and labels, carefully reconnect all wires to their correct terminals on the new board. Ensure all connections are secure. Refer to Rajah 1 for a visual reference of the board's layout.
- Gantikan Fius: If applicable, ensure the correct fuse (e.g., 3 amp atau 5 amp, as specified by your furnace manufacturer) is installed in the fuse holder on the new board.
- Panel Selamat: Close and secure the furnace access panel.
- Pulihkan Kuasa: Pulihkan kuasa elektrik ke relau di panel servis utama.
- Operasi Ujian: Initiate a heating cycle to verify proper furnace operation. Observe for any error codes or unusual behavior.
5. Prinsip Operasi
The control board itself does not have user-operable controls. Its function is to interpret signals from the thermostat and safety devices, then execute the necessary actions to operate the furnace. This includes:
- Urutan Pencucuhan: Initiating the igniter and opening the gas valve when a call for heat is received.
- Penderiaan Api: Monitoring the flame presence to ensure safe combustion.
- Kawalan Kipas Blower: Activating the indoor blower fan at appropriate times during heating and cooling cycles.
- Safety Limit Monitoring: Shutting down the furnace if safety limits (e.g., high temperature, pressure switch) are exceeded.
- Kod Diagnostik: Providing diagnostic fault codes via an LED indicator to assist in troubleshooting.
Normal operation of the furnace is controlled by your thermostat settings. Ensure your thermostat is set to the desired mode (Heat, Cool, Auto) and temperature.
6. Penyelenggaraan
The Lennox 103085-02 control board is designed for reliable, long-term operation and typically requires minimal direct maintenance. However, regular maintenance of the overall furnace system is crucial for the longevity of all components, including the control board.
- Pemeriksaan Relau Tahunan: Have your furnace inspected annually by a qualified HVAC technician. They can check for proper operation, clean components, and identify potential issues before they lead to control board failure.
- Pastikan Kawasan Bersih: Ensure the area around the furnace is clean and free of dust and debris, which can accumulate on electronic components and affect performance.
- Periksa Pendawaian: During annual inspections, ensure all wiring connections to the control board are tight and free from corrosion or damage.
- Periksa Fius: Periodically inspect the fuse on the control board for signs of damage or being blown. Always replace with a fuse of the correct ampperingkat pemadaman.
7. Penyelesaian masalah
Many furnace control boards include an LED indicator that flashes diagnostic codes to help identify issues. Consult your furnace's specific service manual for a list of these codes and their meanings. Common symptoms that may indicate a control board issue include:
- Furnace not starting or failing to ignite.
- Blower fan running continuously or not turning on.
- Intermittent furnace operation.
- No power to the thermostat or other furnace components.
- Repeated blowing of the control board fuse.
If you experience any of these issues, it is recommended to contact a qualified HVAC technician for diagnosis and repair. Attempting complex repairs without proper training can be dangerous.
8. Spesifikasi
| Jenama | Lennox |
| Nombor Model | 103085-02 (OEM Replacement) |
| Nombor Model Item (Pengilang) | CECOMINOD048127 |
| Berat Barang | 10 auns |
| Dimensi Produk | 6 x 6 x 6 inci |
| Pengeluar | Lennox |
| Nombor Bahagian | CECOMINOD048127 |
| ASIN | B00FQHQKLU |
9. Maklumat Waranti
Specific warranty details for the Lennox OEM Replacement Furnace Control Board 103085-02 are typically provided by the seller or manufacturer at the time of purchase. Please retain your proof of purchase for any warranty claims. For detailed warranty terms and conditions, contact the authorized Lennox dealer or the point of purchase.
10. Sokongan Pelanggan
For technical assistance, installation questions, or troubleshooting beyond the scope of this manual, please contact a qualified HVAC professional or an authorized Lennox service provider. You may also refer to the official Lennox website for additional resources or to locate a service technician in your area.





