GMC Mold Temperature Controller  
Issues > Check/Troubleshooting
Temperature will not increase (irregular temeperature changes).
  1. Heater Conductor (SSR) is not functioning normally.
  2. Heater is disconnected.
  3. Problem with sensor installment.
  4. Loss of pressure in pipings.
  5. Scales and particles in solenoid valves.
  6. Scales and particles in relief valves (H-types only).

1. Heater Conductor (SSR) is not functioning normally.
Please have authorized worker perform inspections.
For parts replacements, do not have anyone besides authorized workers or a Matsui service worker perform the work.
  1. Open the Control Panel and check to see if SSR is functioning normally.

    [Point]
    Turn the power breaker ON (Power Lamp will blink) and turn the operation switch OFF. If the Heater Conductor is functioning normally, current should not be running to the heater circuits. Use a clamp meter to measure the current in the heater circuits.
If problem persists
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2. Heater is disconnected.
  1. Check to see if either the dryer heaters are disconnected or if the terminals are loose.
If problem persists
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3. Problem with sensor installment.
  1. Are the terminals loose? Are the fitted areas damaged? Please check.


    (References)
    If disconnected, ALARM will appear.
    MR 98 Panel: "FFFF" will appear on PV display.
    MR980 Panel: "SENSOR ABNORMAL" will appear on monitor.
  2. Check the panel.
If problem persists
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4. Loss of pressure in pipings.
  1. Expand the outlet of the pipe and change the route of the piping. Install a bypass on the pipes.
If problem persists
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5. Scales and particles in solenoid valves.
If scales and particles penetrate and damage the valves, cooling water and the liquid medium will continue to flow and temperature will not be controlled.
(References) When scales and particles penetrate and damage the solenoid and relief valves:
  1. Drain hose will heat up.
  2. If the supply valve of customer's equipment is closed, the PV value will increase.
  1. Disassemble each solenoid valve, check to see if the core section is not moving because of the scales or if the springs are moving or not.


    (References)
    Parts for repair - Contact your local Matsui service for information.
    Calphabas - to improve quality of water
    Cooling Water Circulation Filtration Set
    Water Energizer - Unit that helps save water, reduce energy consumption and environmentally safe to use.

    Replace liquid medium once a month. See Maintenance instructions for reference.
How to Disassemble
If problem persists
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6. Scales and particles in relief valves (H-types only).
If scales and particles penetrate the valves, cooling water and the liquid medium will continue to flow and temperature will not be controlled. 
  1. Clean or replace the relief valve.
    Disassemble each solenoid valve, check to see if the core section is not moving because of the scales or if the springs are moving or not.

    (References)
    Parts for repair - Contact your local Matsui service for information.
    Calphabas - to improve quality of water
    Cooling Water Circulation Filtration Set
    Water Energizer - Unit that helps save water, reduce energy consumption and environmentally safe to use.

    Replace liquid medium once a month. See Maintenance instructions for reference.
If problem persists
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