provides 30 internal technical maintenance manuals for air conditioners, inspection, code, debugging, dialing, and repair. For details, click
and sort out the common reasons for high-pressure protection of commercial water heaters for your reference. This fault should be checked from three aspects:
1. The component itself, mainly check whether the high-voltage switch is damaged.
2. Motherboard, check whether the motherboard is damaged.
3. System, including waterway system inspection and fluorine circuit inspection. According to current statistics, due to waterway system failure, the system reports high-pressure protection, and relatively few reports high-pressure protection in fluorine system failure. Therefore, when the unit reports high-pressure protection, the focus should be on the waterway system to check.
2. Troubleshooting of high-pressure protection for commercial water heaters
The system has no water or the water flow is small
1. The valve of tap water inlet and outlet is not opened;
2. The water replenishment solenoid valve has failed;
3. The water pump is not opened;
4. The Y filter l5 is blocked;
5. The warm water valve is stuck;
6. The built-in circulating water inlet pipeline check valve is invalid;
7. The circulating water inlet and outlet valve is not opened;
8. The circulating water pump is not opened or the water pump has air;
9. There is no water in the water tank;
10. The check valve is invalid.
3. System heat exchange is poor or sensor failure
1. High pressure sensor failure;
2. Unit motherboard failure;
3. Casing heat exchanger is severely scalable;
4. Water tank temperature sensor package is faulty or poor contact;
5. Water outlet temperature sensor package is poor or has a resistance drift;
6. System blockage (frost will occur before and after the blocked position);
7. The refrigerant infusion amount is too much.
PS: Many friends ask how to get the air conditioner fault code for free. It is actually very simple. Enter "Refrigeration and Air Conditioning Technology" according to the figure below, and then follow us and you can check it for free in the menu bar ~
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