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We have a solar / electric hotwater system.our booster swicth appears to make no change in hot water supply. it seems to activate at the mains box and says boost on, but dosent make any hot water. how long should it take? we have only had it installed for 9 months in a new home do we have a problem. the hot water system will make water over night

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Hello,

there is a problem with your solar / electric hot-water system. The fault should be from the solar outside, probably its not passing enough current to the hot-water system, that's why the water is not getting hot. Or the heating element might be bad.

Most electric hot water heaters have two thermostats, one near the top of the tank and one near the bottom, and are covered by removable metal cover plates. The thermostats are pressed firmly against the bare metal wall of the hot water heaters tank.

First remove the upper thermostat cover plate and check the high limit switch button. If it has tripped, press it to reset it.


Check for power at the input terminals of the upper thermostat. (usually marked L2 and L2) If no power is present then check your circuit breakers or wiring to the water heater.


If there is no hot water then the upper thermostat should be applying power to the upper heating element. Check for voltage at the upper heating element. If there is power at the heating element but the element is not getting hot then the heating element needs to be replaced.


If there is no power at the upper heating element then the upper thermostat needs to be replaced.

If you cannot carryout the above troubleshooting yourself, then maybe you should care repairman to help you fix the problem.

I wish you good luck.


Posted on Jul 04, 2010

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Solar hot water not hot


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We argue that policy needs to look beyond installation and that installation practices need improving, but what can you do to get an effective installation?
First, seek out independent advice from sources such as local sustainability events and organisations. They can help you understand what suits your circumstances and what characterises an effective installation.
A good organisation is theAlternative Technology Association. They provide free advice to members, sell a solar hot water guide, and organise open house events where you can see and discuss domestic sustainability technologies.
Second, consider whether solar hot water is the best option. It may be that a hot water heat pump or an instant gas system is a suitable choice, depending on where you live, how much cloud cover you have, or what sort of building you are in.
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Fifth, if you go solar, install a system that has a sufficiently large tank matched with a sufficiently large solar array for your needs. Water is very good at storing heat. A large tank could help you store solar energy for those rainy days.
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