BERNT LORENTZ GmbH
Siebenstücken 24, 24558 Henstedt-Ulzburg, Germany,
Tel (+49) 0 4193 8806-700, www.lorentz.de
All specifications 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.
Guide for troubleshooting for PS2 pump controller
This table shows the max. allowed voltage for each PS2 controller type as well as the min.
voltage which is necessary to reach the max. speed:
Min. voltage for max. speed
The preferred voltage level is between the min. voltage for max. speed and the max. voltage.
Compare the measured voltage with the COMPASS report and the actual configuration of the PV
Generator to estimate whether there is a failure in the PV Generator:
measured voltage on the terminal
input
open circuit voltage of the
datasheet of the PV-module
number of modules in one string
Causes for a wrong voltage on the input of the controller could be:
• Wrong configuration of the PV Generator
➢ Redo the configuration of the PV Generator as described in the COMPASS report
• Wrong polarity of the PV Generator
➢ Interchange the input cables of the PV Generator
• Defective PV-module in the PV Generator
➢ Test each PV module to check whether a module is damaged
• Short circuit on the Power-Board (voltage drops close to zero)
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