Table 6. Troubleshooting
TROUBLESHOOTING
The PumpSaver® will display a fault code alternating with a number or with “run” when it is in a trip
condition. If the unit is showing a fault code (see Table 5) alternating with the word “run”, it has
tripped on a current (amperage) condition. If the fault code is alternating with some number (voltage
reading or zero), the unit will not allow the motor to start because there is a problem with the
incoming voltage. If the display is showing just a fault code, the unit is in a mode that requires a
manual reset. This could be because the number of restarts has expired or is not allowed. If the
display is showing “off,” a stop command was issued through the communications network.
PROBLEM
SOLUTION
The unit will not start. Display
alternates “rP” with the DISPLAY/PROGRAM
switch parameter value.
The voltage inputs are reverse phased. If this is
the initial start up, swap the leads connected to
L1 and L3 on the Model 777-AccuPower to
correct the problem. If the overload relay has
been previously running, the power system has
been reverse phased. Check the phase
sequence of the incoming power lines. Note: L1
must be tapped from conductor Phase A, L2 from
B, and L3 from C for correct kilowatt
measurements.
Display alternates “SP”, “ub”, or
“oc” with “run”
The overload relay has tripped on the fault shown
on the LED display and is timing down RD2
before restarting.
Display alternates “LPR”
with “run”
The overload relay has tripped on low power
(LPR) and is timing down RD3 before restarting.
If LPR is not a normal condition for this
installation, check for loss of liquid, closed valves,
broken belts, etc.
Display is showing a solid “SP”,
“ub”, or “oc”
The unit has tripped on the fault shown and a
manual reset is required because the
programmed setting in RD2 is 0. Check the
system for problems that would produce the
single-phase, overload or current unbalance
fault—such as a jam.
Display is showing a solid “LPR”
The unit has tripped on low power and a manual
reset is required because the setting in RD3 is 0.
Check the system for problems that would
produce a loss of load like a broken belt or a
pump is out of liquid.
Display is showing a solid “CF”
Contactor failure – the unit has tripped on a
single-phasing of the current, but was not single-
phased by the incoming voltage. Check for
damaged contacts or loose wiring.
Unit displays currents when the
motor starts but reads “0” kW or HP
and trips on LPR after 4 seconds.
The unit is not wired properly to calculate correct
power factor. See Figures 1, 2 & 3 for proper
wiring and review step 4 in connection
instructions (page 1).
Display alternates “HPR” with “run”
The overload has tripped on high power and is
timing down RD2.
Display is showing solid “HPR”
The overload has tripped on high power and
requires a manual reset.
Unable to change parameters
See TAMPER GUARD section on page 14
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
