Sunny Roo inverters

If your inverter is less than 5 years old, there’s a good chance you still have warranty (assuming the manufacturer is still in business).
Not sure if the inverter is faulty, or if it is actually reporting a fault elsewhere in your solar system?

See below for the error codes recognized with your Sunny Roo inverter/solar system.

If you are still unsure call us to see if we can help you over the phone, or book in a Solar Health check.
You could save big $$$’s with one of our Solar accredited teams expert appraisal. 
If you believe that your Inverter may be subject to an Insurance claim please contact us on 07 3274 4365 and advise us of the details

COMMON SUNNY ROO ERRORS

The SR Series Inverter is equipped with an on-board self diagnostic system. This system can automatically identify a large number of possible operational issues and provide notification via its LCD screen. This system makes it possible to quickly isolate technical issues, and to distinguish between Service Codes related to the installation versus Service Codes which are internal to the inverter. Whenever the self diagnostic system has identified a particular issue, the respective Service Code is displayed on the LCD screen.

Inverter Error Code and Error Code Description

LCD
Indicate

Designation

Description

Repair

Er00

DC_BUS
pre-Charge fail

The Inverter is in soft start procedure, but the DC Bus cannot reach and maintain anticipative charging voltage.
  1. Disconnect ALL PV (+) or PV (-).
  2. Wait for few seconds.
  3. After the LCD switches off, reconnect and check again.

Er03

INVERTER voltage abnormal

The Inverter Output voltage is abnormal.

 

DC_BUS
over-voltage

The DC BUS inside is lower or high than expected.

Er07

4. If error code keeps recurring, contact your local distributor.

Er08

DC_BUS
under-voltage

 

Er17

EEPROM ERROR on
the control board

EEPROM Data is wrong.

 

Er19

DC_BUS discharge fail

Capacitors of the DC Bus can’t be discharged down.

 

Er22

Output Relay fail

The Inverter Output Relay is abnormal.

 

Er24

Output Current sense fail

The Inverter Output Current fails to detect.

 

Er25

BOOSTER_A
over-current

Over-current on the DC side.
This fault code is displayed if the current in the DC network is larger than specified.

 

Er26

BOOSTER_B
over-current

Er30

Rating setting of Driver board does not match EEROM of control board

EEPROM Data is wrong.

 

 

LCD
indicate

Designation

Description

Repair

Er06

EPO

Inverter enters into EPO mode (Emerge Power Off).
  1. Remove the short circuit occurred at the EPO terminal.
  2. If error code keeps recurring, contact your local distributor.

Er09

Inverter Output over-current

Over-current on the AC side. This fault code is displayed
if the current in the AC network is larger than specified.

  1. Turn off AC breaker, and then check the peripheral AC system configuration and the grid conditions.
  2. If error code keeps recurring, contact your local distributor for help.

Er11

Inverter over-load

Overload on the AC side. This fault code is displayed if the load in the AC network is larger than specified.

Contact your local distributor for help.

Er13

Inverter short-circuit

Short-circuit on the AC side.

Contact your local distributor for help.

Er14

Inverter PLL fail

The phase of Inverter can’t synchronize with the utility.

Contact your local distributor for help.

Er29

Inverter output DC current over spec.

The DC component of the electricity fed into the grid
is longer than the permissible range.

Contact your local distributor for help.

Er10

Inverter Over temperature

The internal temperature is too high.
  1. Try to reduce the ambient temperature.
  2. Move the inverter to a cooler place.
  3. If error code keeps recurring, contact your local distributor for help.

Er18

Heat Sink Over temperature

The Heat Sink temperature is too high.

Contact your local distributor for help.

 

Grid Fault Alarm Code and Alarm Code Description

LCD
indicate

Designation

Description

Repair

AL00

Utility Voltage Over-Voltage

Utility Voltage greater or smaller than the
permissible value.
  1. Wait for 1 minute, if the grid returns to normal, the inverter will automatically restart.
  2. Check grid connection, such as wires and connectors.
  3. Make sure grid voltage and frequency meet the proper specifications.
  4. If error code keeps recurring, contact your local distributor for help.

AL01

Utility Voltage Under-Voltage

 

AL02

Utility Voltage Over-Frequency

Utility Frequency greater or smaller than the
permissible value.

AL03

Utility Voltage Under-Frequency

 

Contact your local distributor for help.

AL04

BOOSTER_A Input Over-Voltage

Over or Under voltage at DC input.
  1. Disconnect ALL PV (+) or PV (-).
  2. Check the open PV voltage is outside the 120Vdc ~ 500Vdc.
  3. If PV voltage is normal and the problem still occurs, contact your local distributor for help.

AL05

BOOSTER_A Input Under-Voltage

AL06

BOOSTER_B Input Over-Voltage

AL07

BOOSTER_B Input Under-Voltage

 

Contact your local distributor for help.

AL08

Anti-Islanding

No Utility or Utility Fail.

  1. Disconnect ALL PV (+) or PV (-)
  2. Check grid connection, such as wires and connectors.
  3. Check grid usability.
  4. If Utility is normal and the error code keeps recurring, contact your local distributor for help.

AL 13

Phase of Utility is fail

AL14

Waveform of Utility is fail

 

LCD
indicate

Designation

Description

Repair

AL09

Inverter Voltage unbalance

Inverter Voltage Waveform is in unbalance.
  1. Shut down inverter (unplug PV generator from the input).
  2. Check grid usability and restart inverter (plug PV generator from the input).
  3. If error code keeps recurring, contact your local distributor for help.

AL10

GFDI

Leakage current on Earth conductor is too high.

  1. Unplug PV generator from the input, check AC peripheral system.
  2. After the problem is cleared, re-plug the PV. Check the PV- Inverter status.
  3. If error code keeps recurring, contact your local distributor for help.

AL11

Isolation Fault

The impedance is between PV (+) and PV (-) and Earth is smaller than 1MΩ.
  1. Disconnect ALL PV (+) or PV (-).
  2. Check the impedance between PV (+) & PV (-) and Earth. The impedance must be larger than 2MΩ.
  3. If error code keeps recurring, contact your local distributor for help.
If you are still unsure call us to see if we can help you over the phone, or book in a  Solar Health check .
You could save big $$$’s with one of our Solar accredited teams expert appraisal. 

If you believe that your Inverter may be subject to an Insurance claim please contact us on 07 3274 4365 and advise us of the details.