Common Problems with Mold Temperature Controllers and How to Fix Them

A mold temperature controller (MTC) plays a key role in stabilizing mold temperature and ensuring consistent product quality in injection molding, die-casting, extrusion, hot-pressing, and many other industrial processes. Whether you are using a water mold temperature controller (MTC) or an oil mold temperature controller(MTC), equipment failures can quickly disrupt production and lead to higher scrap rates or machine downtime.

To help operators deal with issues more efficiently, this article summarizes common failure points and practical solutions. Below is the troubleshooting table used by most technicians for quick diagnosis.

Common Problems for Mold Temperature Controllers (MTCs)

Why These Problems Occur

Most issues with a mold temperature controller (MTC) come from wear, improper settings, incorrect installation, or unstable cooling/heating supply.

• For a water mold temperature controller (MTC), cooling-related failures—such as solenoid valve blockage or insufficient water pressure—are more common.
• For an oil mold temperature controller (MTC), high-temperature components such as thermal oil, coils, and heating tubes require more frequent inspection.

Regular cleaning, checking of electrical connections, and monitoring temperature accuracy can effectively prevent most failures.

How to Prevent Mold Temperature Controller Problems

Here are some effective preventive methods to keep your mold temperature controller (MTC) running smoothly:

1. Maintain stable cooling water pressure

Especially important for water mold temperature controllers (MTCs), as insufficient flow will cause overheating.

2. Use high-quality thermal oil

For oil mold temperature controllers (MTCs), poor-quality thermal oil can carbonize, leading to blocked pipelines and heater damage.

3. Clean heat exchangers and pipelines regularly

Scale buildup reduces heat-transfer efficiency and may trigger overheating alarms.

4. Check electrical components

Loose wiring, aging relays, or unstable voltage can cause frequent restarts, alarms, or shutdowns.

5. Ensure correct set temperatures

Incorrect setpoints can make the controller continuously heat or cool, increasing wear and error rates.

Conclusion

A mold temperature controller(MTC) is a key device for precise temperature management. By understanding and addressing these common faults and their corresponding solutions, users can ensure the smooth and efficient operation of mold temperature controllers (MTCs), maximizing their productivity and minimizing downtime. 

Whether you are using a water mold temperature controller (MTC) or an oil mold temperature controller (MTC), proper maintenance and timely troubleshooting will significantly improve performance.

If you need support or want a customized temperature control solution, our technical team is ready to help (www.hengdechiller.com). 

Choose Hengde, Choose Perfect Mold Temperature Controller!