Sigma SI 150, Installation And Maintenance Manual, Page: 18 / 19

18
13 .TROUBLESHOOTING – PROBABLE CAUSE – SOLUTIONS
Troubleshooting Probable cause Solutions
When installed there is no
hot water .
The solar water heater
reaches the optimum
performance two days
after the installation.
During these two days, it
is recommended to avoid
hot water consumption,
even if there is sunshine.
Please wait until next days
noon(sunshine obligatory )
Even though , a whole day
has passed , no sufficient
hot water .
1 )There is air trapped in
the collector closed circuit
2 ) There is a leakage in
the closed circuit .
1 )Ventilation needed.
2 ) Check the leakage and
fill closed circuit with
water
Though before there was
hot water, now there is
not.
1 )Water mixture between
storage tank and solar
water heater .
2 ) Valves problem
3 )The consumption of hot
water is bigger than the
appliance's capacity.
Huge hot water
consumption during the
night.
1 ) Check the valves and
set off the solar water
heater valves.
2 ) Call installators to
check if the valves are
damaged .
Cold water tabs give hot
water.
Valves or hydraulic
problem.
Check the hydraulic
installation. Ensure that
the supply of hot water is
not connected to a supply
of cold water.
Hot water exists , but
there is a small leakage on
the roof .
Probably there is a
connection leakage
between collector and
pipes ,
Tight or change the screws
Water adding in closed
circuit , in order to get a
good function .
Closed circuit leakage
( either collector or pipes).
Locate the leakage.
Hot water exists ,but you
can see moisture or
greenery on collector
down part
Reasonable deliquescence
caused by temperature
difference .
Expected phenomenon
,not decreasing solar
collector lifetime .