11 Troubleshooting
11.1 General malfunctions
Peligro de electrocución
Always disconnect the unit from the power supply before removing
the cover from the solar control.
Tab.26 General malfunctions
Fault
Possible cause
Solution
The collector field
installation does
not heat the ac
cumulator water.
The surface of
the collectors is
dirty.
Clean the surface of the collectors.
The flow rate is
insufficient.
Check the flow rate and, if necessary, adjust it to the correct value using the flow regu
lator.
Incorrect sensor
reading.
Check that the sensors are correctly positioned. If faulty, replace.
Solar control mal
function.
Check the parameter configuration of the control. If in doubt, contact the technical de
partment.
No fluid circula
ting in the insta
llation.
The installation
has not been co
rrectly sized.
The installation's pipe network does not meet the criteria in terms of the required di
mensions and arrangement, therefore the fluid cannot circulate.
System electrical
fault.
Check the electrical supply at various points in the system.
Air found in the
pump intake.
Bleed the entire system. Repeat the installation filling process if necessary.
The solar pump
does not run.
The pump is blo
cked.
Disassemble the pump and check that there is no obstruction. If the error persists, con
tact the technical department.
The solar pump is
not powered.
Check the pump connections. Check the electrical supply to connection R1.
The solar control
is incorrectly con
figured.
Check the configuration of the solar control.
The pump starts
and stops inter
mittently.
The temperature
difference in the
control is too
small.
Change the ∆Ton and ∆Toff settings to the correct values.
Collector sensor
fitted in the wrong
place.
Position the temperature sensor at the hottest output of the collector.
The pump starts
running after a
long delay.
∆Ton connection
temperature diffe
rence too great.
Change the ∆Ton and ∆Toff settings to the correct values.
Collector sensor
incorrectly posi
tioned.
When the sun is shining, briefly adjust the solar pump in manual mode, and check if the
temperature of the collectors increases.
The accumulator
cools down over
night.
The solar circuit
pump works over
night.
Check the operating status of the pump.
Check the configuration of the solar control.
The solar pump
does not run alt
hough the tempe
rature of the co
llectors is greater
than the tempera
ture of the accu
mulator.
The temperature
difference in the
control is too
great.
Change the ∆Ton and ∆Toff settings to the correct values.
The solar control
is incorrectly con
figured.
Check the configuration of the solar control.
Check the position of the sensors.
11 Troubleshooting
40
Solar hydraulic unit
7729335 - 04 - 12052021
