INVT SPC Series

SPC Series Solar Pump Inverter Fault diagnosis and solution
-54-
Fault code
Fault type
Possible cause
Solution
A-LL
Underload
pre-alarm
 The pumping pool
has no water.
 Check the pumping
pool.
A-tF
Full-water
pre-alarm
 The pumping pool is
full.
 If you have configured
the full-water pre-alarm
function, the device
automatically stops
when the pre-alarm
elapsed a period of
time. Otherwise, check
whether terminals are
wired correctly.
A-tL
Empty-water
pre-alarm
 The pumping pool
has no water.
 If you have configured
the empty-water
pre-alarm function, the
device automatically
stops when the
pre-alarm elapsed a
period of time.
Otherwise, check
whether terminals are
wired correctly.