Solar water heating
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No gap/insufficient gap between solar panel and roofing
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Gap blocked with roof debris
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Incorrectly installed panel
Solar water heater – leaking pipes
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Joint failure of pipes due to UV degradation or frost damage
Solar water heater – dirty panel covers
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Air-borne salt, dust or dirt accumulating on covers
Solar water heater – loss of panel cover transparency
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UV degradation of plastic panel covers
Solar water heaters – missing or damaged glazing rubbers to transparent panel
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UV degradation, or wind action on panel
Solar water heater – water leaking from panel
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Frost damage has split pipes
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Failed brazed copper joints
Loose fixings on solar water heater
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Wind damage
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Corroded fixings
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Insufficient number of fixings
Water heating – water dripping from pressure relief valve drain vent pipe
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Hot water cylinder temperature is set too high
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Faulty pressure relief valve – it is not shutting off under working pressure
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Build-up of lime preventing the pressure relief valve from shutting off fully
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Increase in water temperature where a solar panel is connected
Solar water heating – no hot water
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Water is not flowing through collector panels
Solar water heating – water not hot enough/inadequate supply
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Collector panels not large enough to meet hot water demand
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Collector panels not orientated to maximize solar gain
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Collector panels are being shaded
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Collector panels are dirty
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Booster heating is not working correctly
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Water is not circulating through the system properly
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Storage cylinder is too small for demand
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Pipe lengths too long and/or inadequately lagged (insulated)
Solar water heating – high power bills
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Temperature controller is activated each time the water temperature falls below the set temperature