Installation and operation manual - Galmet solar systems
© All rights reserved - Galmet Sp. z o.o. Sp. K.
34
10. Troubleshooting
Typical problems
Cause
Solution
During a
sunny day the
temperature of
the water in the
water heater
does not increase
(the solar system
is not heating)
Solar pump does
not work
No temperature displayed on the
controller's panel
No power, the controller is
turned off
Check the power, turn on the
controller
The controller
correctly displays
the temperature,
the pump LED
flashes
The collectors'
temperature
displayed is high
No power supply for the pump,
faulty controller
Check the connection between
the controller and the pump,
replace the controller
Collector's pump blocked,
failure of the pump's motor
Check the pump's RPM after
unscrewing the vent screw,
replace the pump (service)
During operation of the solar system there is a large
difference in temperature between the collector and water
in the water heater (of more than 20°C)
Not enough flow
Improper flow regulation
Adjust the flow as
recommended
Air in the system
Vent the installation as
recommended
Frequent on/off switching of the collectors' pump
Too much flow
Improper flow regulation
Adjust the flow as
recommended
Improperly
adjusted
controller
Temperature difference set
too high
Adjust the controller's settings
as recommended
Significant fluctuations in system pressure
Abnormal pressure in the
diaphragm vessel
Check and adjust the pressure
in the diaphragm vessel
Systematic reduction of pressure in the system
Leak in the system
Locate and remove fluid leak
Emergency fluid discharge
during reflux
Refill the installation
Leakage in expansion vessel's
air valve
Check and raise the pressure
in the expansion vessel to the
recommended values
The apparent low efficiency of the solar collector
A large partition of water
during heating
Gross surface area of the
collectors is too small
Heat loss through the
circulation
Limit the working time of the
circulation to the absolute
minimum
Heat loss to the CH system
(DHW exchanger with two
spiral coils)
Eliminate the possibility of the
gravitational heat losses
10. Troubleshooting
WZÓR
