Why does the solar water heater only produce cold water but no hot water?

Why the output water is cold water

(Power light does not turn on)

Cause: Solution:

Leak protection cap reset button is not pressed. Press the reset button

(heater light does not turn on. up)

Cause: Solution:

Heating temperature is set too low and the heating temperature is too low

In the event of a thermostat failure, contact the maintenance department< /p>

In the event of an internal circuit failure, contact the maintenance department< /p>

(Heating indicator light is on)

Cause: Solution:

Heating time is too short and continue heating (more than 20 minutes)< /p>

If the mixer fails, replace the mixer

If the electric heating tube fails, please contactthe maintenance department< /p>

If the internal circuit fails, please contact the maintenance department

Why does the solar water heater not discharge hot water directly into cold water?

The solar water heater does not work. Reasons for hot water:\x0d\1. The vacuum tube is damaged and needs to be replaced;\x0d\2. The sewer pipe, valve or joint is leaking and the sewer pipe needs to be repaired; \x0d\3. The tap water pressure is high and hot water flows. If it doesn't come out, you need to reduce the flow of tap water;\x0d\4. water leak phenomenon. You must install an independent valve and close the valve;\x0d\5. If a fully automatic auxiliary water tank is installed, the auxiliary water tank float valve may also not be closed tightly or may fail, resulting in continuous replenishment of cold water and lowering the temperature some water. Afterwards,the float valve and associated parts must be replaced.

When it is determined that the water is not hot and the weather is fine, service personnel may disconnect the user's water supply hose, asking the user to stop using water and add a valve to detect if in this case the sun will shine for a day. The final temperature after two days of life is used to determine whether it is the water heater itself or a problem with the piping or use of the system and then analyzed.

① Reason: There is an obstruction in front of the water heater and the sunshine time is short, causing the water temperature to be low

Measurements: Remove obstruction or adjust. the position of the water heater or make a support to raise the position of the water heater;

Analysis: Solar water heaters mainly depend on sunlight to illuminate the collector and convertr light energy into thermal energy, thus heating. water in the water heater. If there is an obstruction in front of the water heater, it will affect the efficiency of the collector. Lighting will lower the water temperature, so there should be no obstructions in front of the water heater. . in front of the water heaterIf there are facilities such as sheds or buildings, the distance between the two should be considered when installing the solar water heater. Refer to the following formula to confirm:

The collector and the shading or the front and the back. rows of the collector The minimum spacing distance can be calculated according to the following formula:

L=H* Ctga

where L-----the collector and the shading object or the front and rear rows of the collector The minimum distance between them, m

H-----The vertical distance between the highest point of the shading object and the highest point bottom of collector, m

a-----altitude angle solar, degrees (°)

The specific values ​​of Ctga according to different latitudes are as follows

Latitude

Corresponding to the solar altitude angle

ctg@value

North latitude 20°

46.58 °

North latitude 25°

41.58°

1.127

30°N

36.58°

35°N

31.6°

40° North Latitude

26.6°

1.996

21.6°

2.525

North latitude 50°

16.61°

3.356

② Reason: The surface of the vacuum tube and the reflector are covered with dust and other dirt

Measures: Rub the surface of the vacuum tube and the reflector to clean it;

Analysis: A if there is too much dust on the surface of the tube empty. , it will affect the transmission of sunlight, thereby affecting the absorption sunlight through the coating of the inner tube;

B for products before 2004, to ensure that the back of the vacuum tube can absorb sunlight, thereby increasing the distance between vacuum tubes. A reflective plate is installed below the vacuum tube, allowing more sunlight to shine through the space between the tubes and onto the reflective plate. The light is reflected by the reflecting plate and then illuminates the back of the tube. vacuum tube Increases the probability of absorbing light, but over time. Due to the influence of atmosphere and atmosphere, the reflector is easily clogged, affecting reflection, reducing absorption of heat and affects the increase in temperature.

③ Reason: The water tank has poor insulation effect and significant heat loss.

Measurement: Replace the water tank.

Analysis: It is possible that very few cases of foamuneven occur during the production process

④ Reason: The upper and lower water valves are not closed tightly (i.e.), the switch is not closed tightly ) ), tap water continues to flow into the water tank, the return pipe continues to flow or drip hot water, or water leaks from the roof, or the indoor valve is incorrectly operated, causing the water in the water tank should not be hot.

Measures: Replace or repair. If the water supply valve does not work properly, instruct the user how to operate it properly;

Analysis: A. If a single handle water mixer is installed in the l's home For the user, when the handle is in the middle position of the valve, hot water and cold water become one. If the mixing chamber is not sealed tightly, cold water may leak into the water. heating through the mixing chamber ;

B. With the improvement of people's living standards, most people begin to use built-in bathrooms or surf bathtubs. This type of bathing equipment usually has several water points, but only one water mixer. After adjusting the water temperature, each water point can produce suitable water. However, people's habit is to simply turn off the water after each water point runs out of water. Click the switch without closing the mixer. open and cold water will flow into the water heater through the mixing valve, which will still cause the overflow pipe to leak.

⑤ Reason: The vacuum tube leaks air but not water, and loses insulation and heat collection efficiency

Measurement: Replace the vacuum tube;

Analysis: Normal, intact vacuum tube There is a getter mirror at the tail. If there is a leak in the vacuum tube, the mirror will turn white and transparent and the mirror will diswill appear. and the whole vacuum tube will change color over time.