OPUS
SERIES
INSTALLATION, OPERATION, MAINTENANCE
AND REPAIR MANUAL
11
11. FAULTS, CAUSES AND SOLUTIONS
When a situation occurs that prevents the normal operation of the pump, the pump
automatically stops and gives an error or warning code.
See Figure 7.1. Thanks to the codes written on the screen, the cause and solution of
the error can be learned. See. Table 11.1.
1) After an error / warning occurs, the pump switches to standby for 5 seconds. It starts again.
2) If the reason for the error / warning disappears after waiting for 5 seconds, the pump starts working again. If the
reason for the error / warning continues, the
pump gives an error / warning again.
3) Error / warning code is found in “P40” in the program menu of the pump.
4) All errors are stored in “P40”, the last (20) errors.
If the pump fails, it cannot be restarted, service intervention is required.
CAUTION
Erroro rW arning
Code&Name
Reason
Solution
Error: E1 FOC
The stator andr otor do notr otate
at synchronous speedd ue to the
instantaneousc hange in load.
Checkt he suitabilityo ft he
installation water flow direction
with the arrowm arko nt he pump
body.W aitf or thep umpt o exit the
errorm ode.
Error: E2
HighV oltage
The supply voltagei sh igh.
Checki ft he supply voltagei s
within the specifiedr ange, wait.
Error: E4
LowV oltage
The supply voltagei sl ow.C
heck if thes upplyv oltage is
within the specifiedr ange
Error: E8
High Temp.
Windingt emperature rise due to
excessive stress in thee ngine
and/or high watert emperature
It is checkedt hatt he water
temperature is notw ithin the
specifiedr ange.W aitf or thep ump
to exit the errorm ode.
Error: E1 6
Engine Start
Lockingo ft he rotord ue to any
foreignm attere nteringt he rotor
rotating area
Wait fort he pump to exit thee rror
mode.
Error: E3 2E ngine
Rotation Speed
The stator andr otor do notr otate
at synchronous speedd ue to the
instantaneousc hange in load.
Call fort he service
Error: E6 4
Engine Short
Circuit
Shortc ircuit betweenp ump and
body
Call fort he service
Error: E1 28
Software Err.
Software errorC
allf or thes ervice
