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303 series electric thermostat incubator common failures and solutions

1. After the power is turned on, the incubator does not respond after the power switch is turned on.
A. After power on, the power indicator does not light: power switch is bad, or power supply into the line has problems, with a multimeter "Ω" file, measuring the line has no break
B. After the machine is turned on, the switch power indicator light: temperature control instrument bad or its switch to the table loaded wire failure (loose). Use a multimeter to check respectively.
2. After the power is turned on, open the power switch leakage tripping.
A. Open the power switch, immediately tripped. Dial out the power plug, the motor into the line cut off, and then plugged into the power supply is normal that the motor leakage, replace the motor.
B. Open the power switch, delayed tripping, the possibility of leakage due to fused heating wire is relatively large. Available multimeter measurement, replace the heating wire. 3.
3. After the power is turned on, open the power switch with a large noise.
A. Check whether the fan blade on the fan is rotating flexibly
B. The fan blade of the fan is touching the inner liner. Take off the fan and readjust the fan blade installation position.
4. The temperature control table shows normal, but not heating.
A. Temperature control table is bad: use a multimeter to measure the voltage of its loading terminal
B. Heat pipe (silk) is bad: use a multimeter to measure the resistance value of the two ends of the heat
5. Fan does not run.
A. Motor bad: use a multimeter to measure its resistance value to determine.
B. Bad starting capacitor: the machine does not turn on. But rotate after applying force by hand
6. Temperature control table (digital display) display board, the temperature display appears to static.
A/B temperature sensor failure / thermostat failure: disconnect the sensor method to determine: if the sensor is disconnected, if the phenomenon has changed both for the temperature control table failure, and vice versa, the temperature sensor failure.
7. The control board shows the temperature and the actual temperature measured in the incubator has a difference.
A. Temperature difference is slightly small, adjust the internal parameters of the temperature control table pb value is more positive. pb value = actual measured temperature inside the incubator - instrument display temperature temperature.
8. The difference between the displayed temperature of the instrument and the set temperature is very large, i.e.: out of control
A. When the temperature difference is large: first replace the probe test.        
B. Temperature control table is bad: update

In the previous:How to configure the power of electric ovens The next article:The Climate Simulation Chamber use precautions
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