-
The pump
should turn on during sunny days and off at night. If the pump does
not do this, there may be a problem with the control box or associated
temperature sensors. If the pump runs but the solar system seems to
produce little or no hot water on a sunny day, the pump may appear
to be running (humming sound) but may not be turning internally (defective
pump) or the heat transfer fluid level in the system may be insufficient
(low pressure on the gauge).
- Loss of pressure (transfer
fluid) in the system usually indicates a leak in the solar loop. Common
places where leaks are found are collector air vents and pin holes
in expansion tanks, drain and fill valves. Most systems use antifreeze
transfer fluids. To reduce the possibility of early component failure
due to corrosion, the transfer fluid should be replaced every 4-5
years.
The above represents the most common types of problems found in solar
water heating systems, in my (Gary's) experience. If you have a question
regarding your system, please call. We will be glad to assist you.
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