Bosch Inverter Error Codes
In 2016, Bosch pulled out of the Australian solar power inverter market due to not being able to meet the specifications and requirements of Australian conditions.
Here is a current list of common Bosch solar inverter Error Codes with potential solutions.
If you find any of the below errors please call us on 1300 054 488, we can be there today to under take a $99 Solar System Performance & Safety Check!
Bosche Solar Inverter Error Codes
| Fault | LED status | Possible cause | Possible Solutions |
| TEMP LIMITS | Top LED red | Ambient temperature is outside the temperature limits | Check the installation conditions (Requirements for the installation location, p. 42) |
| DC VOLTAGE | Left LED red | Solar power system field designed or connected incorrectly |
Check the voltage of the solar power system field |
| AC CONNECTION | Right LED red | Faulty grid connection | Check installation and connector pin assignment (Connecting the network cable (AC cable), p. 65) |
| AC CONNECTION PE | Right LED red | Faulty grid connection | Check installation and connector pin assignment |
| GRID FREQUENCY | Right LED red | Grid frequency is outside tolerance |
Check grid frequency, if necessary contact the grid operator |
| AC VOLTAGE | Right LED red | AC surge voltage | Check voltage, if necessary contact the grid operator |
| FIRMWARE | Top LED red | Incorrect firmware due to wrong firmware updates | Perform firmware update again. During the firmware update, do not disconnect the string inverter from the grid or the Internet/computer. |
| INT ELECTRONICS | All LEDs permanently red | Faulty electronics | Contact Bosch Power Tec Service (see contact details on the back of the manual) |
| COM FAULT | Bottom LED red | Communication fault | Check connected accessories and internet connection |
| SERVICE SWITCH | All LEDs are flashing red | Internal defect | –Do not touch the device –Switch off the AC fuse –If DC circuit breaker is available within the installation, set the DC circuit breaker to 0 (=off). –Contact Bosch Power Tec Service (see contact details on the back of the manual) |
| DC ISOLATION | All LEDs are flashing red |
–Short circuit –Earth fault |
–Do not touch the device –Switch off the AC fuse –If DC circuit breaker is available within the installation, set the DC circuit breaker to 0 (=off). –Contact Bosch Power Tec Service (see contact details on the back of the manual) |
Fallon Solutions team can take care of all your solar inverter issues, upgrades and can also offer a 26 point safety check of your existing system. Simply call us on 1300 054 488 or fill in an online solar inverter enquiry form and one of our friendly team will contact you.
24/7 Emergency Electricians
Our master electricians are available 24/7 for emergency services in Greater Brisbane & Gold Coast. Offering you peace of mind in stressful circumstances, you can trust that a Fallon Solutions electrician will be there promptly when you need them.
Electrical emergency services are available to residents of:
- Brisbane
- Ipswich
- Logan
- Moreton Bay
- Redlands
- Gold Coast
For residential or commercial electrical emergencies, call us on 1300 054 488.
Fallon Solutions Solar Electricians
Same-Day Service: Our electricians are available across Greater Brisbane, the Gold Coast and the Sunshine Coast so you never have to look far for our trusted technicians.
24/7 Emergency Electrician Service: We are proud to offer emergency electricians to residents of Greater Brisbane & the Gold Coast.
Excellent Customer Service: With thousands of 5-star reviews, we know the importance of quality customer service. Let us guide you through solar installation, repairs and services.
Highly Qualified & Knowledgable Hot Water Plumbers: Our team of solar specialists are experts in their field. With up-to-date qualifications, insurance and extensive knowledge.
We aim to provide you with fast, reliable service with minimal impact to your day. Contact Fallon Solutions on 1300 054 488 or complete our online booking enquiry here.
Trusted by over 8,500+ reviewers on Google.
Rated 4.6 stars from more than 8,500 reviews in Brisbane
