Troubleshooting; General Malfunctions - Baxi SH 7 COMPACT Installation And Service Manual

11 Troubleshooting

11 Troubleshooting
11.1

General malfunctions

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