.65.
.64.
8. Troubleshooting
8. Troubleshooting
Alarms
Cause
Solution
• Input voltage low/missing
• Polarity reversed
• Main board damaged
No Information
(Blank Screen)
Test – DC switch OFF
• Check PV connections
• Check polarity
• Check voltage >860V
Test – DC Switch ON
• Check voltage >860V
• If DC voltage is “0” replace inverter
Initializing
(Inverter stuck
in this mode)
• Inverter is waiting for
driving signal
Test – DC switch OFF
• Check PV connections
• Check polarity
• Check voltage >860V
Test – DC Switch ON
• Check voltage >860V
• A cable may have been damaged or loosened
in shipping replace inverter
OV-G-V: Over
Grid Voltage
• Inverter detects grid
voltage as too high
Test – DC switch OFF
• Check AC at the inverter
• If AC measures high, adjust upper limit with
permission from utility
Test – DC Switch ON, full power
• Check AC at inverter test points
• Compare with LCD
• If AC measures high, cables between inverter
and interconnect are too small
• Check ampacity and voltage drop calculations
UN-G-V: Under
Grid Voltage
• Inverter detects grid
voltage as too low
Test – DC switch OFF
• Check AC at the inverter test points
• If AC measures low, adjust lower limit with
permission from utility
• Check LCD voltage reading, may be a bad
measurement circuit
Test – DC Switch ON
• Check grid standard
• Replace inverter
8.1 Current Alarm
8.1.1 Running messages
Running messages can be viewed on the screen including any current alarms.
8.2 Alarm History
8.2.1 Viewing alarm history
Refer to LCD Operation 6.6.8 for instructions on viewing Alarm History.
8.3 Error Messages
1). Inverter serial number
2). The inverter distributor/dealer (if available)
3). Installation date
4). The description of problem (e.g., the alarm message displayed on the screen and the
status of the screen status indicator lights. Other readings obtained from the
Information sub menu (refer to Section 6.4) will also be helpful.)
5). PV array configuration (e.g. number of panels, panel capacity, number of strings, etc.)
6). Your contact details
8.3.1 Troubleshooting guide
Canadian Solar inverters are designed in accordance with international grid standards, safety
standards and electromagnetic compatibility requirements. Before delivery to the customer,
the inverter has been subjected to intensive testing to ensure its optimal operation and
reliability.
In case of failure, the screen may display an alarm message, stop feeding energy into the
grid or both. Typical failure descriptions and their corresponding alarm messages are listed in
Table 9 on the following pages.
Please have the following information available when contacting technical support:
NOTE
The first step to clearing alarms as listed in Table 9, is to reset the inverter.
To reset the inverter, turn off the inverter (refer to Section 6.2) and wait for
five (5) minutes before restarting it (refer to Section 6.1). If the failure
persists, please first contact your local distributor and then
Canadian
Solar
Support Service.
If you need to contact
Support Service at
Canadian
solar
North, South & Central America Canadian Solar Inc.
Attn: Customer Service Department 3000 Oak Road, Suite 400
Walnut Creek, CA 94597
Tel: +1 855 315 8915
E-mail: [email protected]
