TROUBLESHOOTING
Notes on System Error 11 for new installations
1 – The SR500 is equipped with 2 relays to pass power to the pump, these relays switch every
time the SR500 starts. A REAL Error 11 means that one (or both) of the relays is/are fused
shut.
A “Fake” Error 11 can be either electrically or hydraulically reproduced.
Electrically reproduced: Pump will only run for 5 seconds three times, then gives Error 11.
1 – For either 115 volt pumps or contactors with 115 volt coils, an Error 11 can mean two
things a) that the neutral buss is not grounded to the ground buss in the main panel, or b) one
load has been left open.
To test the ground/neutral connection w/o going into the main panel, remove the neutral from
Line 2. Replace it with a pigtail from Line 2 to the ground from the motor and the ground
from the SR500. If this eliminates the Error 11, the neutral buss is not grounded to the ground
buss. (if it is not per code in your jurisdiction to ground the 2 busses together, you have no
choice but to change your pump motor or contactor coil to 230 volt)
Running a neutral directly to the pump, bypassing Load 2 (open) will also cause an Error 11.
Both Load 1 and Load 2 must be connected to both motor terminals or both coil terminals
Hydraulically reproduced: Pump will run for 30 seconds one time, then give Error 11, or will
run for 30 second three times and Give Error 11. This can be caused by a hydraulic condi-
tion or inaccurate data in the SR500 memory. These cases are rare but can happen, especial-
ly in suction lift systems. In these cases Stingl Products recommends contacting our
Technical Department for further assistance.
ERROR 17
If The SR500 tries to start 3 times and does not register a vacuum level consistent with it’s
stored values, it will enter an alarm state and display “Error 17”. In a new installation this
error could either mean the initial calibration was incorrect ( Pump not at full prime or valve
settings incorrect) Re-calibrate the unit, insuring that the valves are set for normal operation
and that the pump runs at a full head during the prime pump phase of service mode.
An SR500 that has been running for a week or more that displays Error 17 could indicate
a change in the starting vacuum level due to normal maintenance issues, such as debris in
the baskets or a dirty filter. If there are no apparent blockages in any of the baskets and the
filter is in good working order and displaying normal operating pressure, check the valve
settings to insure they are still in the normal operating positions. If the error persists, you
may have a blockage in the suction line(s) (higher vacuum) or debris in the pump impeller
(lower vacuum). Also, persistent Error 17 for lower vacuum levels can also indicate prob-
lems with filter media (old sand, old cartridge, greasy D.E. grids)
If no problems can be associated with a different vacuum level, re-calibrate the unit by run-
ning the Prime Pump function in Service Mode.
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