SolarMax 10260200, Instruction Manual

31

en

Alarm

Troubleshooting measures

PV over voltage

■

Check the number of PV modules and adjust it if need.

PV under voltage

■

When sunlight intensity weakens, PV modules voltage 
decreases. No action is needed.

■

If such phenomena occur when sunlight intensity does not 
weaken, check if there is short circuit, open circuit etc. in 
the PV strings.   

Insulation resistance 

abnormal

■

Check the insulation resistance against the ground for the 
PV strings. If a short circuit has occurred, rectify the fault.

■

If the insulation resistance against the ground is less than 
the default value in a rainy environment, set Insulation 
resistance protection on SE Touch.

Residual current abnormal

■

1. If the alarm occurs accidentally, possibly the external 
circuits are abnormal accidentally. The inverter automati-
cally recovers to the normal operating status after the fault 
is rectified.

■

2. If the alarm occurs repeatedly or lasts a long time, check 
whether the insulation resistance against the ground of PC 
strings is too low.

PV strings abnormal

■

Check whether the PV string is shielded.

■

If the PV string is clean and not shielded, check whether the 
PV modules are aging or deteriorated. 

PV strings reverse

■

Check whether the cables of PV strings are correctly con-
nected. If they are connected reversely, reconnect the 
cables.  

BUS under voltage

BUS over voltage 

Inverter module fault 

Boost circuit abnormal

■

If the alarm occurs occasionally, the inverter can automati-
cally recover to the normal operating status after the fault is 
rectified.

■

If the alarm occurs repeatedly, contact your dealer for tech-
nical support.  

EEPROM fault

■

Replace the monitoring board

Zero power and yellow alarm 

light illuminating in remote 

monitoring system

■

If modem or other data logger is used, please reboot it; if it 
still does not work after rebooting, contact your dealer.  

remote monitor displays zero 

power generation 

■

If modem or other data logger is used, please reboot it; if it 
still does not work after rebooting, contact your dealer.  

remote monitor displays no 

output voltage

■

Check if DC switch is damaged, and if not, switch it to ON. 
If it still doesn’t work, contact your dealer. 

Inverter off grid

■

Wait till power is restored;

■

Turn DC switch to ON, and if DC switch trips a lot contact 
your dealer.  .