Trouble Shooting - Lorentz PS15k2 C-SJ42-6 Manual

11 Trouble Shooting

Please read this section before calling for help. If you call
for help, please refer to the model and serial numbers.
If the pump does not run – Most problems are caused
by wrong connections (in a new installation) or failed
connections, especially where a wire is not secure and falls
out of a terminal. The System ON light will indicate that the
system is switched on and connected to the controller. It
indicates that VOLTAGE is present but (in a solar-direct sys-
tem) there may not be sufficient power to start the pump. It
should attempt to start at intervals of 240 seconds.
When solar power is insufficient – When solar power
on the array is present, but too weak for the pump to run,
it will attempt to start about every 240 seconds. During
each attempt, you will see the PUMP ON light come on.
When pump stops from a sudden shadow on the
solar array – If a shadow suddenly passes over the array,
e.g. if you walk in front of it, the controller will lose track
of the input voltage. It may make rapid on/off noises and
a high-pitched noise, then stop. This does not indicate a
problem. The pump will attempt to restart after the normal
delay.
Time delays
(1) After the pump stopped due to insufficient sunshine –
240 seconds;
(2) After full-tank float switch resets – 2 to 3 seconds;
(3) After low-water probe regains contact with water in
the source – 15 minutes, but the indicator light will
slowly flash for the rest of the solar day, or until power
is disrupted or the controller is turned off/on;
Force a quick start – To test or observe the system, you
can bypass the normal time delays. Switch the POWER
switch off then on again. The pump should start immedi-
ately if sufficient power is present..
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
All specifi cations and information are given with good intent, errors are possible and products may be subject to change without notice. Pictures may
differ from actual products depending on local market requirements and regulations.
PUMP OVERLOAD (PUMP ON light shows red
instead of green) – The system has shut off due to an
overload. This can happen if the motor or pump is blocked
or very difficult to turn and is drawing excessive current
(hard to turn). This can be caused by a high concentration
of solids in the pump, high water temperature, excessive
pressure due to high lift or a restriction in the pipe, or a
combination of these factors. The controller will make 3
start attempts before shutting down the system. The Sys-
tem ON LED will be OFF and the red OVERLOAD LED ON.
The system will not reset until the ON/OFF switch is turned
OFF and ON again.
Pump attempts to start every 240 seconds but does
not run – The controller makes a slight noise as it tries to
start the pump. The pump will start to turn or just vibrate
a little.
(1) There may be insufficient power reaching the control-
ler. A solar-direct (non-PowerPack) system should start
if there is enough sun to cast a slight shadow.
(2) If the pump was recently connected (or reconnected)
to the controller, it may be running in reverse direction
due to wiring error.
(3) If the motor shaft vibrates, but does not turn, it may be
getting power on only two of the three motor wires.
This might happen if there is a broken connection or
if you accidentally exchanged one of the power wires
with the ground wire.
(4) The pump or pipe may be packed with mud, clay, sand
or debris.
31
Sun. Water. Life.