Phenomenon

reason

resolvent

Controller has no display

The power supply is not connected or the fuse is blown

Check the power supply circuit and fuse

Display numbers but jump up and down

The electrode wire is damp or short circuited

Electrode ceramics contaminated

Check the electrode wires

Cleaning ceramic holes (0.1N HCL)

The standard solution pH 4.01 and pH 6.86 cannot be adjusted

External contamination of electrodes

The electrode wire is damp

Electrode damage or cracks

Electrode ceramic blockage

Cleaning electrode (0.1N HCL)

Check the electrode wires

Replace the electrode

Cleaning ceramic holes (0.1N HCL)

Slow response to numbers

Electrode film or ceramic hole contaminated

Clean the entire electrode

When the actual pH value has changed significantly and the controller value

But the change is very small

Electrode ceramic hole blockage

Electrode aging, slow response

Cleaning electrode (0.1N HCL)

Use regeneration solution or replace the electrode

Control the display number to remain unchanged

Electrode rupture

Replace the electrode

The relay in the controller does not operate or cannot add medication

Relay damaged

Controller setting error

Insufficient medicinal solution

Supplier replaces relay

change setting

Supplement medication solution