Can we turn off the water supply to our solar hot water system as well as the electricity when we are away from home for say a month. If so ,what is he procedure? Thanks Graham and Jan Fryer

You need to install a home hydroneumatic sistem. You should ask a specialist. to provide the equipment

we are loss to understand this question
with hot water systems the water in is at normal temperature ( day /night ) and it is heated either by solar to electric/ gas to make the water hot
the hot water system will not make water colder only hotter.

You would need to buy a propane hot water heater. Unfortunately you can not convert an electric hot water hearter to propane.

I didn't want to use either an electric or gas hot water heater so I invested in a solar hot water heater for my home. Best thing that I ever did as far as saving money. Once it is paid off then the benefits are lower utility bills.

Good luck,

Marty

try using the services of an electrician when fitting electrical components
the thermostats only stop/ start electrical power to the elements and will not control the temp of solar systems
if they physically burn the points , there must be an electrical short of some sort so an electrician in to test circuitry is in order

Add a comment and say which water heater you have: Gas, electric, solar, tankless, or heat pump. Otherwise expert is just guessing.
Or contact dux, and tell them which model and type heater you have.
http://www.dux.com.au/products/home

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

In city water or well water system ... the cold water flows from the tank (or meter) toward the hot water heater. The cold water splits in two (so to speak) at the heater with one part going on to the house to supply all cold water needs while the other part goes into the water heater to be heated. On the other side of the hot water heater, there is a system that paralles the cold water system to supply the hot water needs of your home.

I hope this answers your question.

if you have a gate valve on the unit from the hot water tank it could be as simple as the valve on the gas system being clogged going to that bathroom,, from how it is described it sounds like that would be the problem check to make sure all valve are not stuck in the on position ans change the valve if it is frozen in place

An on-demand, or tankless, water heater is a system for heating water as it passes through the pipes, usually very near the point of use. Traditional tank water heaters bring the water to approximately 140 degrees Fahrenheit (60 C), in order to ensure the water supply lasts long after the heater turns off. Since this is obviously far too hot to be pumped out of a shower of faucet, cold water is added to the mix in the pipes. Coupled with the loss of thermal energy over time, the average tank heater has an efficiency of approximately 80%. On-demand water heaters have a number of advantages over their tank-using counterparts. While tanks often degrade over time and begin leaking, the apparatus used in an on-demand water heater is much less susceptible to the burdens of age, and will often outlive the house they're installed in. The amount of energy used is a fraction of that used in a tank water heater, due to increased efficiency and a much smaller window during which a heating source is in use. While tank hot water heaters can, and often do, run out of hot water after a number of showers, on-demand heaters provide a never-ending supply of hot water, ensuring that warm water is always available when needed. A tankless water heater can cost between $500 and $1500, and they most commonly use either electric or natural gas energy to heat the water. Most mid-sized households report an energy savings of approximately 25-45% for a gas or propane heater, and up to 50% with an electric heater, over using traditional tank heaters. Water is usually set to a maximum temperature of 120 degrees Fahrenheit (49 C), though many heaters allow for custom setting of the maximum temperature via remote control. Outflow rates range from 8-14 gallons (30-53 litres) per minute. Installation for most tankless water heaters is incredibly easy, involving simple plumbing. In the case of electric heaters, all that is required for a fuel source is to plug the heater into an outlet and begin heating your water. Some modern on-demand water heaters can incorporate a solar preheating system. This system uses a traditional solar heating system and tank to bring the water nearer to the desired temperature, saving substantial energy use in the final on-demand heating. A solar preheating system costs between $500 and $800.