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Common problems of 101 series Electric heating drying oven and their solutions

1. Drying oven doesn't response after turning on the power switch
A. After turning the power on, the power indicator light does not light up: the power switch is broken or the power inlet line has a problem, use the multimeter "Ω" file to measure the inlet line has no broken circuit
B. After the machine is turned on, and the switch power indicator light is on: If the temperature control instrument breaks 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. If it trips after opening the power switch, then pull out the power plug, and cut it off, if the power goes back to normal after plugged into the power supply  then it means it is a motor leakage, please replace the motor.
B. If it delays tripping after opening the power switch, then it is most likely because of leakage due to fused heating wire. Please replace the heating wire.
3. If you hear an unusually noise coming out when you open the power switch
A. The screws are probably not fully screwed in in the fan blade or the support spring of the fan blade is loose.
B. Or maybe the fan blades of the fan collide with the wall of the inner box. Take off the fan blade baffle on the left side of the inner oven, and readjust the fan blade installation position.
4. If the temperature control table shows working normally, but it isn't heating.
A. Temperature control table is broken: use a multimeter to measure its loading terminal
B. Broken heating tube: use a multimeter to measure the resistance value of the heating terminals
C. Relay open circuit damage.
5. If the blower does not operate.
A. Motor is broken: use a multimeter to measure its resistance value.
B. Start capacitor is broken: not turning on. But it rotates after applying force by hand
C. Blower switch is broken, use a multimeter to measure its voltage after turning on the power.
6. If the temperature display appears to be static on the table display board.
A. Temperature sensor failure / thermostat failure: the method of disconnection sensor to determine: such as sensor disconnection, if the phenomenon has changed both for the temperature control table failure, and vice versa temperature sensor failure.
7. If the temperature on the control board is different to the actual temperature measured inside the oven.
A. When the temperature difference is slightly smaller, then please adjust the internal parameters of the temperature control table pb value to be positive. The pb value = the actual measured temperature inside the oven minus the temperature on the control board
8. If the difference between the displayed temperature on the panel and the set temperature is very large.
A. When the temperature difference is large: first replace the probe test.       
B. Temperature control table is broken: please replace
C. Bad relay: please replace

In the previous:How to choose a constant temperature Shaking incubator The next article:DZF series Vacuum drying oven common failures and solutions
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