The reasons why solar has only cold water but no hot water and the solutions are as follows:
1. The valve of the solar water heater uses a hot and cold water mixing valve. a cold water inlet and a hot water inlet, and the cold water inlet is connected. The tap water pipe supplies cold water, the hot water inlet is connected to the solar water heater to supply hot water, then the mixer tap is adjusted to supply hot water. hot water at an appropriate temperature. When there is a problem with the mixer tap, it is often because the cold or hot water channel is clogged with sediment such as sand in the water. Only cold water comes out. This is probably because of the connection between the hot water pipe and. the mixing valve is blocked.
2. Try to fix it: turn off the main water tap; remove the logo under the mixer handle (in fact, it is a capon decorative outside of the fixing screw), unscrew the fixing screw, remove the handle; remove the large screw that secures the valve core (you need to use a wrench to apply a little more force) and remove the valve core and observe the hot and cold water channels and the mixing channel to see s 'there is; if there is dirt inside, try to remove it with tools such as wire; you can use a towel to cover the leak. Open the water inlet, slowly open the cold water channel and hot water channel and observe whether the water flow is smooth. . If the problem has been resolved, reinstall the valve.
Troubleshoot the reasons why the solar water heater only produces cold water but not hot water:
Whether it is only one pipe that supplies water, or a hot and cold pipe that supplies water separately, the first thing to check is if it is a faucet that releases waterwater. Always use the shower to spray water.
1. If the faucet is draining water, you must first remove the faucet. If no water comes out, then check the bottom elbow joint from the heat pipe to the water tank joint. there is still no water, just use a suitable sized object to pierce it. Go to the water tank and remove it and you will know
2 If the shower is draining water, unscrew it first. garden hose then open the handle. If there is still no water, unscrew the nut connecting the water inlet and the heat pipe of the mixer as follows: If there is water coming out, it must be a problem with the water mixer. If there is still no water, follow method <1> to find the cause. Additionally, the air outlet may be blocked or hot water may not flow.