SR981S/SR982S operation manual of solar pump station
Page 80 of 85
components but no relation with controller itself. The following description of some
well-known problems should help the installer and operator to isolate the problem, so that
the system can be put into operation as quickly as possible and to avoid unnecessary cost.
Of course, not all possible problems can be listed here. However, most of the normal
problems encountered with the controller can be found in the list below, only return the
controller to seller when you are absolutely sure that none of the problems listed below is
responsible for the fault.
Symptoms
Secondary symptoms
Possible cause
Procedure
Controller does not
appear any functions
at all
Display shows nothing, no
display illumination
Controller power supply
is interrupted
Check the controller power
cable and fuse
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
Solar circuit pump
doesn’t operate
The pump symbol in the
display doesn’t blink.
Lighting or
blinks
The maximum storage
tank temperature (SMX)
has been reached, or
The maximum tank
temperature 95
o
C
reached.
No fault, normal case
Lighting or
blinks
The maximum collector
temperature (EMOF)
reached
No fault, normal case
T1 - - -
Error code displays on the
screen
Sensor fault (short
circuit or open circuit)
Check values of every
connected sensor; replace
all defective sensors and /or
wiring.
Solar pump operated,
despite the fact that
the switch-on
conditions are not
satisfied
The pump symbol on the
screen flashes.
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.
One of functions can’t
be used
In submenu, this function
may not be activated.
No fault
Pump works, but flow
rate is 0.0L/min
Filter valves are not installed
on the flow and return
pipeline
Blade of electrical flow
meter is jammed
Dismantle the connected
pipe of pump station, clean
pipeline with high pressure
water gun,
And if figure of flow meter is
changed means a normal
status.
