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SANY truck Speed Control Module / Blower Motor Resistor 60273570 ASYZY50220
Core Functions
1. Installed near the air conditioner evaporator housing or the blower air duct, it serves as the core electronic component controlling the fan speed of the cabin's air conditioning and heating system.
2. It precisely regulates the current flowing to the blower motor-using a microprocessor and fine-tuning circuitry to switch resistance values or employ PWM (Pulse Width Modulation) output-thereby enabling stepless or stepped adjustment of the cabin airflow across speed settings (e.g., levels 1 through 4).
Common Failure Modes
1. Airflow operates only at the maximum setting, with no lower speeds available: This is the classic symptom of a burnt-out speed control resistor. The low-speed resistor wire within the module has snapped, forcing the current to flow through the "direct-to-max" circuit that bypasses the resistor.
2. Blower motor fails to spin entirely: A short circuit in the module's main control chip or a completely blown thermal fuse prevents the blower motor from receiving any voltage signal.
3. Burning odor from the air vents: Excessive resistance in the blower motor overloads the speed control resistor, causing the surface insulation coating or the plastic connector to melt and emit smoke due to the heat.
HVAC System Trio
1. 60273568: Blower Motor Assembly-the electrical load component directly controlled by the resistor.
2. 60273569: A/C Evaporator Core-the aluminum heat sink of the speed-control resistor must be inserted into the evaporator housing's air duct, utilizing the cold airflow passing over the evaporator for forced cooling.
3. 60240844: Cabin A/C Control Panel-sends blower speed control voltage or K-Line/CAN data commands to the module.
DETAILS
| DESCRIPTION | Speed Control Module / Blower Motor Resistor | PART NUMBER | 60273570 ASYZY50220 |
| WEIGHT | 0.15 kg | VOLUME | 93 mm × 46 mm × 78 mm |
| TRUCK MOLDE | SANY | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | CABIN |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
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