Professional, focused, concentrate to solve your problem, Kay Han energy, professional the maintenance the Emerson Power Emerson module communication failure analysis: Emerson HD22010-3, HD22020-3 the rectifier module communication interrupt main reasons: 1, the module monitors the communication line patch bad or broken; 2, set the monitoring module module communication slogan "actual inconsistent; 3, set in the monitoring module module Address not match the address set on the module panel; Third, Emerson HD22010-3 HD22020-3 the other fault module alarms phenomenon charging module and the processing module common fault performance: power indicator (green) off protection indicator (yellow) light, malfunction indicator light (red) light. while digital tube flashes to indicate a fault code (current). input AC power to check whether the input the normal power indicator (green) off module internal fault to be returned for repair. Emerson HD22010-3, HD22020-3 charging module output undervoltage the E31 check output voltage is normal 2 Emerson HD22010-3, HD22020-3 charging module module temperature E32 ambient temperature is too high. system thermal design unreasonable Emerson HD22010-3, HD22020-3 charging module AC the undervoltage E33 Check the AC input voltage is normal 4, Emerson HD22010 -3, HD22020-3 module charge exchange missing phase E34 Check the AC input voltage is out of phase normal 5 protection indicator light (yellow) Emerson HD22010-3, HD22020-3 charging module original edge flow E35 check module is overheating, dust network is blocked, handle cover is reset 6, the malfunction indicator light (red) Emerson HD22010-3, HD22020-3 charging module output voltage E36 disconnect the AC re-power over Emerson HD22010-3, HD22020-3 charging module A common failure analysis and processing method, Emerson HD22010-3, HD22020-3 charging module to do the above operation issues still not resolved, please call Kay Han Energy Technology Co., Ltd. in Guangzhou, we will be happy to serve you and your satisfaction is my motivation!