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Error nr.
on LCD
display
Problem
Cause / Solution
Err 5
Remote temperature
sensor failure
This error will not auto-reset.
1. Scroll through the LCD-screens to find the battery temperature.
2. If the LCD indicates an unrealistic temperature value or "---", replace
the remote sensor.
3. Press and hold the SETUP-button for 3 seconds to enter the SETUP-
MENU.
4. Exit the SETUP-MENU by pressing SETUP.
5. Check if the battery temperature is now valid.
Err 17
Controller overheated
despite reduced output
current
This error will auto-reset after charger has cooled down.
Check the ambient temperature and check for obstructions near the air
inlet and outlet holes of the charger cabinet.
Err 18
Controller over-current
This error will auto-reset.
Disconnect the charge controller from all power-sources, wait 3 minutes,
and power up again.
If the error persists the charge controller is probably faulty.
Err 20
Maximum Bulk-time
exceeded
This error can only occur when the maximun bulk-time protection is
active. This error will not auto-reset.
This error is generated when the battery-absorption-voltage is not
reached after 10 hours of charging.
For normal solar installations it is advised not to use the maximum bulk-
time protection.
Err 21
Current sensor issue
The charge controller is probably faulty.
This error will not auto-reset.
Err 22
Internal temperature
sensor short
The charge controller is probably faulty.
This error will not auto-reset.
Err 23
Internal temperature
sensor connection lost
(2 sensors)
Disconnect all power-sources from the charger, and open the front cover.
Check if the white connectors on the control-pcb (at the left of the LCD)
are properly connected. The connector coming from the coil (mounted to
the top of the charger) should be connected in the right connector
(CON302).
If connected properly, close front cover and power-up again.
If the error persists the charge controller is probably faulty.
This error will auto-reset.
Err 26
Terminal overheated
Power terminals overheated, check wiring and fasten bolts if possible.
This error will not auto-reset.
Err 33
PV over-voltage
This error will auto-reset after PV-voltage has dropped to safe limit.
This error is an indication that the PV-array configuration with regard to
open-circuit voltage is critical for this charger. Check configuration, and if
required, re-organise panels.
Err 34
PV over-current
The current from the solar-panel array has exceeded 75A. This error
could be generated due to an internal system fault.
Disconnect the charger from all power-sources, wait 3 minutes, and
power-up again. If the error persists the controller is probably faulty.
This error will auto-reset.
Inf 65
Communication warning
Communication with one of the paralleled controllers was lost. To clear
the warning, switch the controller off and back on
Inf 66
Incompatible device
The controller is being paralleled to another controller that has different
settings and/or a different charge algorithm.
Make sure all settings are the same and update firmware on all chargers
to the latest version
Err 67
BMS connection lost
Connection to the BMS lost, check the CAN bus cabling. When the
charger needs to operate in stand-alone mode again, change to setup
menu setting ‘BMS’ from ‘Y’ to ‘N’ (setup item 31).
Err 114
CPU temperature to
high
This error will reset after the CPU has cooled down.
If the error persists, check the ambient temperature and check for
obstructions near the air inlet and outlet holes of the charger cabinet.
Check manual for mounting instructions with regard to cooling. If error
persists the controller is probably faulty.
Err 116
Calibration data lost
This error will not auto-reset.
Err 119
Settings data lost
This error will not auto-reset.
Restore defaults in the setup menu (setup item 62).
Disconnect the charge controller from all power-sources, wait 3 minutes,
and power up again.
