01 Common Malfunction: The Overall Heating System Is Not Heating Up
Symptom: The indoor heating is cold and basically has no temperature. Touching the main pipeline in the hallway or the neighbor’s pipeline can cause temperature.
Inspection: Check if there is temperature at both ends of the valve. If one end is hot and the other is cold, it indicates that the valve is not fully open. Exclusion method: Open the inlet and outlet valves.
02 Common Malfunction: The Heating Radiator Is Not Heating Up (Valve Is Open)
Symptoms: Half of the heating system is not heating up; There is a sound of water inside the heater.
Exclusion method: There may be air in the heating radiator, and it needs to be deflated. Method 1: First, close the inlet valve. Open the air release valve to exhaust, if water overflows, close the air release valve. Method 2: Close the inlet valve by 3/4, then close the return valve, open the vent valve to exhaust, and close the vent valve when water overflows. If the fault cannot be eliminated after the above operation, please contact the maintenance personnel for inspection. The heating end users on the top floor or partition may require multiple exhausts before the heating system can enter normal operation during the initial or operational period of heating, which is a characteristic of heating pipelines.
03 Common Faults: Low Room Temperature
Symptom 1: The water entering the heater has a temperature, and the room temperature is too low. Check whether the inlet water temperature of the radiators in each group (room) is consistent. If the first set of heaters is hot and the later ones are not, it indicates that the user’s indoor heating system has high resistance and slow water flow. Exclusion method: 1. Users should investigate whether there is any behavior of changing the number or size of heating units, lowering the height of wall mounted heating, removing unnecessary heating or increasing resistance facilities. 2. Please have the property management (for buildings within the warranty period) inspect the heating system and filter screens for blockages. If there are blockages, they should be flushed.
Symptom 2: The heating in the house is very hot, but the temperature in the room is very low. Exclusion method: If this situation occurs and the heating system has been modified, it means that the selected radiator is too small and the number of radiator fins needs to be increased. So when purchasing a radiator, it is important to actually measure it and calculate its size based on comprehensive factors such as orientation, surrounding environment, and pressure. If the heating has not been modified, it may be because the insulation performance of the house is too weak, and insulation renovation is needed for doors, windows, and exterior walls.
04 Common Malfunction: The Underfloor Heating Is Not Warm Enough
Symptom: The filter screen has also been washed. It used to be hot in previous years, but it’s not hot this year anymore. Reason: The water in the underfloor heating pipe circulates for a long time and contains a large number of microorganisms. Under certain conditions, a large amount of biofouling will be produced, and there will be a large amount of sludge, bacteria, and scale on the inner wall of the pipe. As for these water rust and sticky mud, they will adhere to the inner wall of the underfloor heating pipe, which will affect the heating temperature of the water underfloor heating system over time, and there is a possibility of blockage in severe cases.
Troubleshooting: Thoroughly clean the underfloor heating pipeline to promptly remove any dirt, biofouling, impurities, and bacteria that may have formed in the pipeline, in order to prevent the formation of sediment in the pipeline and prevent it from becoming clogged. Before and after cleaning, it is necessary to ensure that the water supply and return valves can be used normally. At present, there are three main methods for cleaning dirt in underfloor heating pipelines, namely: chemical immersion, projectile cleaning, and pulse wave physical cleaning. Different methods are applicable to different pipelines, and it is recommended to choose according to one’s own situation.
05 Common Faults: Water Leakage
Symptom 1: Cast iron radiator leaks, drips or leaks. Reason: Cast iron heaters experience thermal expansion and contraction, and the rubber pads between the radiators aged after the system was filled with cold water before heating, resulting in poor sealing and water leakage. Exclusion method: Close the inlet and outlet valves to prevent further leakage. If the leakage is not severe, a container can be used to catch it. After the heating starts, the gaps in the heater will naturally disappear when it comes into contact with heat. If the water leakage is severe or still leaks after heating, it is recommended to replace the gasket or replace the heater.
Symptom 2: Leakage of radiator or pipe. Reason: Leakage caused by natural aging or corrosion of pipeline connections or metal radiators. Exclusion method: Close the main valve of the household water supply and return to avoid greater losses. Timely maintenance is necessary.
