Sidite SR882 - Page 54

SR882 operation manual
~ 53 ~
Symptoms
Secondary
symptoms
Possible cause
Procedure
Controller does
not display any
functions at all
Display shows
nothing, no display
illumination
Controller power supply
is interrupted or program
is out of work
Check the controller
power cable
Or change fuse
The solar pump
doesn’t operate,
despite the fact
that switch-on
conditions are
satisfied
The pump symbol on
the display blinks
Pump power supply is
interrupted
Check the pump
power cable
Pump doesn’t
operate
The pump symbol on
the display doesn’t
blink.
Lighted
Or blinks
The maximum storage
tank temperature
(SMX1) is reached
The maximum collector
temperature (EM) is
reached.
No fault
Tn - - -
Error message
displays on the
screen
Fault (short circuit or
open circuit) in a
temperature sensor
On the controller,
check the current
values of all
connected
temperature sensors,
replace all defective
sensors and /or
cabling.
The solar pumps
operated, despite
the fact that the
switch-on
conditions are not
satisfied.
The pump symbol on
the display blinks.
Holiday function or Frost
protection function or
tank re-cooling function
is activated.
No problem, it is
normal. If necessary
to deactivate the
corresponding
functions.
Any function can’t
activate
In submenu not
select the function
All inputs and outputs
are used; inputs or
outputs can only have
one function every time.
No fault
Warning！ Remove the device from the mains supply before opening the case
A potentially defective sensor can be checked using an ohmmeter. To do this, the sensor
must be disconnected, its resistance measured, and the value compared with the figures in
the table below, small deviation (±1%) is acceptable,