How to Troubleshoot an ELECTRIC Water Heater
Steps
Heating element or Thermostat are the main reason for electric water heater failure
- Shut off the power to the water heater from the breaker
- remove the access panels to expose the element and thermostat
- remove the insulation
- remove the plastic cover that is covering the element and thermostat
- verify the power is off using a volt stick
- remove the wires to the upper element
- resistance check using a voltmeter
- one probe to each screw to test the resistance
- if the meter is measuring no resistance, then the element is bad
- if the upper element is good, repeat the steps to check the bottom element
- testing a ground element set to OHMs using the voltmeter
- use one probe to the screw and the other probe to the neutral side
- should receive no resistance, if there is resistance then the grounded element is bad.
Chinese:
- 加热元件或恒温器是电热水器故障的主要原因
检查步骤:
- 从断路器关闭热水器的电源
- 拆下接入面板,以暴露加热元件和恒温器
- 移除保温层
- 取下覆盖加热元件和恒温器的塑料盖
- 使用电压检测笔确认电源已关闭
- 断开上部加热元件的电线
- 使用万用表进行电阻检测
- 将探针分别接触每个螺丝,以测试电阻
- 如果万用表无电阻值,则加热元件损坏
- 如果上部加热元件正常,则重复步骤检查下部加热元件
-
测试接地的加热元件(万用表设置为欧姆档)
- 一根探针接触螺丝,另一根探针接触中性端
- 应无电阻值,如果有电阻,则加热元件接地故障