Check if liquid level in tank is too low and there is no flow circulation in pipe. Check if the contact output of thermal protector is faulty.

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Q: Failure of power reverse

Check if the main power phase is correctly connected. Check if power input of cooler unit shall be connected with correct phase. The failure is caused by failure of reverse relay of main controller if the power connection is correct.

Q: liquid temperature is ≧ 45℃

Check if the liquid temperature is ≧ 45℃ Check if the liquid sensor is in good function (with correct resistance). Failure is caused by temperature controller if sensor is good.

Q: Failure of high temperature deviation

Check if liquid temperature is out of limitation of high temperature deviation. Failure is caused by broken temperature controller if the above items are checked and good.

Q: Inenough liquid in tank

Check the tank level. Check if there is enough liquid in tank, or the problem is caused by failure of level switch.

Q: Failure of high temperature deviation

Check if liquid temperature is out of limitation of high temperature deviation. Failure is caused by broken temperature controller if the above items are checked and good.

Q: Failure of high temperature deviation

Check if liquid temperature is out of limitation of high temperature deviation. Failure is caused by broken temperature controller if the above items are checked and good.

Q: Failure of power reverse

Check if the main power phase is correctly connected. Check if power input of cooler unit shall be connected with correct phase. The failure is caused by failure of reverse relay of main controller if the power connection is correct.