Although it is said that professional things should be left to experts, it is also good if you can repair it yourself, at least you can save money. So, how to judge whether the high and low temperature test box works? Or how to repair it? Here, I would like to point out the two most basic ways to determine maintenance.
1. The temperature does not reach% 60: Open the side door of the high and low temperature test box and observe whether the circulating water supply system is normal, otherwise the temperature cannot be raised;
2. The high temperature can not rise above 80 degrees: there are two kinds of damage, 1) the temperature sensor head is damaged; 2) the thermostat is damaged.
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