Common faults and solutions of RKC temperature controllers

Create Date: 2024-8-30 12:03:23|Source: RKC

1. The power indication is normal, but the temperature controller has no screen display. Most of this fault is caused by the heating of the voltage regulator element (7805 or 7812) on the thermostat during long-term use, which leads to the breakpoint of the solder joint, and sometimes it is caused by the phenomenon of virtual soldering at the factory, and the main re-soldering can be done.

2. The temperature controller shows normal, metal sleeve thermometer, marine thermometer, V-type thermometer, copper sleeve thermometer but can not be added, generally the heating element is damaged, in the case of confirming that the heating element is not problematic, the relay is mostly bad (mostly occurs in the instrument with a heating power of more than 1000W). If the relay is good, the relay drive element (9013) is bad. For solid state relays, it is easier to damage, and for bidirectional thyristors, there is less burning phenomenon.

3. If the temperature of the temperature controller is much higher or much lower than the actual temperature, this phenomenon is generally that the temperature sensor is damaged and can be replaced.

4. The temperature controller has 999 or 000 beating and has an alarm output, laser rangefinder, digital oscilloscope, grounding resistance tester, anemometer This phenomenon is the sensor open circuit, such as LLL or half 000, this phenomenon is the sensor short circuit, and it can be replaced.

Common faults and solutions of RKC temperature controllers

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