What's the problem with Fusibo's induction cooker display E4?
Methods of inspection are as follows:1, remove the circuit board, power on, detect the main control IC (U4) sixteenth foot voltage is 2.52V,.2, if the voltage is normal and fault has not ruled out Kai, the main IC damage itself.3, replace the main power on test machine, troubleshooting.4, if the voltage measured by the first step not normal, check with a multimeter, D1, D2, R11, R226, Z2, C203 is normal as long as one of the components of the Kang problems will cause voltage protection circuit, the damaged components removed, changed the same specifications on the components. Start normal Kai troubleshooting.5, if the above components are no problem, then you can confirm that the main IC damage, after the replacement of the fault can be ruled out.6, in order to avoid detours, can check or re plug on the main plug-in, plug-in problem to eliminate the oxide layer or contact is not good.
Fusibo electromagnetic oven maintenance manual code tableSecond: fault display id:E2: sensor circuit and accessories.E3: the voltage is too high to test whether the R26, R17 are 2V, R29 and CPU transformers are normal.E4: voltage is too low, R26, R17, R29, CPU transformer is normal?.E5: porcelain high temperature sensor is enough cooling oil.E6: the temperature of the heatsink is too high. Is the thermostat CPU normal?.Is the E7:NTC sensor open and attached properly?.
The induction cooker shows E4, which means that the voltage is too low, that is, the undervoltage protection of the circuit (usually voltage is below 175V).
