CanadianSolar CSI-7K-S22002-ED User manual

CSI-7K-S22002-ED
CSI-8K-S22002-ED
CSI-9K-S22002-ED
PV Inverter User Manual
(Part No.:2809001100 Release Date: September, 2020)

Contents
1 Introduction ............................................................................................................................................1
1.1 General Information............................................................................................................................... 1
1.2 User Manual Disclaimer ......................................................................................................................... 1
1.3 Limitation of Liability .............................................................................................................................. 1
1.4 Target Group ........................................................................................................................................... 1
1.5 Symbol Conventions ............................................................................................................................... 1
1.5.1 Warnings in the manual .................................................................................................................. 1
1.5.2 Labels on product and packaging .................................................................................................. 2
2 Safety Instruction...................................................................................................................................2
2.1 General Safety ......................................................................................................................................... 2
2.2 Notice for Use.......................................................................................................................................... 2
2.2.1 Personnel requirements.................................................................................................................. 2
2.2.2 Operation requirements.................................................................................................................. 2
2.2.3 Protecting labels............................................................................................................................... 2
3 Product Overview ...................................................................................................................................3
3.1 Product Introduction .............................................................................................................................. 3
3.2 Appearance.............................................................................................................................................. 3
3.3 Product Nameplate................................................................................................................................. 4
4 Storage.....................................................................................................................................................4
5 Unpackaging and Inspection ................................................................................................................5
6 Installation ..............................................................................................................................................5
6.1 Basic Installation Requirements............................................................................................................ 5
6.2 Mounting Wall-mounting Bracket ......................................................................................................... 7
6.3 Installing Inverter ................................................................................................................................... 7
7 Electrical Connection..............................................................................................................................8
7.1 Safety ....................................................................................................................................................... 8
7.2 Recommended Cables............................................................................................................................ 8
7.3 Meter/CT Connection (Optional)............................................................................................................ 8
7.4 Wiring PE Cable....................................................................................................................................... 8
7.5 Wiring AC Output .................................................................................................................................... 9
7.6 Wiring DC Input..................................................................................................................................... 10
7.6.1 Requirement for DC input ............................................................................................................. 10
7.6.2 Wiring .............................................................................................................................................. 11
7.6.3 Connecting PV array (DC input) .................................................................................................... 12
8 Communication.....................................................................................................................................12
8.1 Communication Mode.......................................................................................................................... 12
8.2 WiFi Data Logger................................................................................................................................... 12
8.3 RS485 ..................................................................................................................................................... 12
9 Commissioning Inverter ......................................................................................................................12
9.1 Checking Electrical ................................................................................................................................ 12

9.2 Checking Mechanical............................................................................................................................ 12
9.3 Start-up Inverter ................................................................................................................................... 13
9.4 LED Indicators ....................................................................................................................................... 13
9.5 Switch off ............................................................................................................................................... 13
10 Daily Maintenance..............................................................................................................................13
11 SPD Maintenance................................................................................................................................14
12 Trouble Shooting.................................................................................................................................15
12.1 Warning ............................................................................................................................................... 15
12.2 Errors ................................................................................................................................................... 15
13 Handling the Inverter ........................................................................................................................16
13.1 Removing Inverter.............................................................................................................................. 16
13.2 Packing Inverter.................................................................................................................................. 16
13.3 Disposing Inverter .............................................................................................................................. 16
ANNEX A: Acronyms and Abbreviations................................................................................................17
ANNEX B: Specification ...........................................................................................................................18
ANNEX C: 2809000900 CT Installation Guide
ANNEX D: 2809001000 Single-Phase Meter Installation Guide

1 Introduction
1 / 18
1 Introduction
1.1 General Information
This manual provides important safety information on relating to the installation, maintenance and usage of single
phase PV inverters. Both users and professional installers must read these guidelines carefully and strictly follow these
instructions. Failure to follow these instructions may result in death, serious injury or property damage.
Only qualified professionals and service personnel can do the installation and operation (refer to 62109-1). Installers
must inform end-users (consumers) about the aforesaid information accordingly.
This manual is only valid for the PV inverter types, CSI-7K-S22002-ED, CSI-8K-S22002-ED and CSI-9K-S22002-ED
produced by Canadian Solar Inc.
1.2 User Manual Disclaimer
The information contained in this manual is subject to change by Canadian Solar Inc. without prior notice. Canadian
Solar Inc. gives no warranty of any kind whatsoever, either explicitly or implicitly, with respect to the information
contained herein.
In the event of any inconsistency among different language versions of this document, the English version shall
prevail. Please refer to our product lists and documents published on our website at: http://www.canadiansolar.com as
these lists are updated on a regular basis.
1.3 Limitation of Liability
Canadian Solar Inc. shall not be held responsible for damages of any kind, including-without limitation-bodily harm,
injury or damage to property, in connection with handling PV inverters, system installation, or compliance or
non-compliance with the instructions set forth in this manual.
1.4 Target Group
This document is intended for installers and users.
1.5 Symbol Conventions
The symbols that may be found in this document or on the product packaging are defined as follows.
1.5.1 Warnings in the manual
A warning describes a hazard to equipment or personnel. It calls attention to procedure or practice.
Symbol Description
DANGER
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING
WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION
CAUTION indicates a potentially hazardous situation which, if not avoided, could result in minor or
moderate injury.
NOTICE
NOTICE indicates a situation which, if not avoided, could result in equipment or property damage.
Information
Information indicates that you must read carefully to ensure optimal operation of the system.

2 Safety Instruction
2 / 18
1.5.2 Labels on product and packaging
Symbol Description
Hot surfaces!
Risk of burns due to hot components!
Danger to life due to high voltage!
Time need to discharge stored energy in the capacitors.
Grounding
Direct Current (DC)
Alternating Current (AC)
Check the user manual before service.
CE mark.
WEEE designation.
2 Safety Instruction
2.1 General Safety
The Inverter has been designed and tested strictly according to the international safety codes, however, certain safety
precautions must be observed when installing and operating this inverter. Read and follow all the instructions,
cautions and warnings in this user manual carefully before any work and keep this manual for future reference.
2.2 Notice for Use
2.2.1 Personnel requirements
Only qualified personnel are allowed to install and commission the inverter, they should:
1) Receive professional training and get the authorization.
2) Be familiar with the safety specification about the electrical system.
3) Be familiar with the local requirements, rules and regulations.
4) Understand the composition and working principles of the grid-tied PV system.
2.2.2 Operation requirements
Use the inverter in installations that meet the following specifications only.
1) Permanent installation is required.
2) The electrical installation must meet all the applications and standards.
3) The inverter must be installed according to the instructions stated in this manual.
4) The inverter must be installed according to the correct technical specifications.
5) To startup the inverter, the Grid Main Switch (AC) must be switched on, before the solar panel’s DC solar switched
on. To stop the inverter, the Grid Supply Main Switch (AC) must be switched off, before the solar panel’s DC isolator
switched off.
2.2.3 Protecting labels
1) Do not scrawl or damage any labels on the inverter enclosure, because these labels contain important information
about safe operation.
2) Do not scrawl or damage the nameplate on the inverter enclosure, because the nameplate contains important
product information.

3 Product Overview
3 / 18
3 Product Overview
3.1 Product Introduction
The inverters are single-phase gird-connected PV string inverters without transformer, which can convert the DC
power from the photovoltaic (PV) strings into alternating current (AC) power, and feed the power into the power grid.
This document involves the following product models:
CSI-7K-S22002-ED; CSI-8K-S22002-ED; CSI-9K-S22002-ED.
PV grid-connected system mainly includes PV modules, DC switch, inverter, AC switch, electricity meter, and local grid.
The PV power system diagram is shown as FIG.3-1.
KWH
PV Modules DC Switch Inverter AC Switch Electricity Meter Utility Grid
FIG. 3-1 PV Power System Diagram
3.2 Appearance
Front view and bottom view
A B CDEFGH
FIG. 3-2 Product Appearance
Object Name Description
ＡLED indicator Indicates inverter operation status.
ＢDC disconnect switch Disconnect the DC current safely.
ＣDC input connectors /
DCommunication port Connect wireless datalogger (WiFi or GPRS), RS485.
EWaterproof and breathable valve /
FCT/Meter receptacle Connect CT or Meter.
GAC receptacle /
HExternal ground point /

4 Storage
4 / 18
3.3 Product Nameplate
The nameplate provides a unique identification of the inverter (Product type, Device -specific characteristics,
Certificates and Approvals).
The nameplate is on the left side of the enclosure.
FIG.3-3 Inverter Nameplate (for reference)
4 Storage
The following requirements should be met when the inverters need to be stored:
Do not unpack the inverter.
Storage temperature: –40°C ~ +70°C.
Storage humidity: 0% ~ 100%RH (Non-Condensing).
The stored warehouse should be clean, well-ventilated, and non-corrosive gas, meanwhile it should be in a state of
unimpeded access.
No smoking, no illegal use of electricity and fire.
When storing inverters, do not stack more than the allowed layers to avoid damage, which number marked on the
product packaging.
Regular inspection is required during the storage.
After long periods storage, the inverters need to be inspected and tested by qualified persons before they are put into
use.

5 Unpackaging and Inspection
5 / 18
5 Unpackaging and Inspection
Before unpacking the inverter, check the package appearance thoroughly, such as any holes and cracks, and check the
inverter model accordingly. If discover any damage to the packaging which indicates the inverter may have been
damaged, or the inverter model is not what you requested, do not unpack the product and contact your dealer
immediately.
After opening the package, check all of the accessories carefully in the carton. If any damage is found or any
component is missing, contact your dealer.
Notice:
1) For component details, see the packing list document in the packing case.
2) Need two person to carry.
6 Installation
6.1 Basic Installation Requirements
1) Do not install the inverter on the structures constructed of flammable or thermolabile materials.
2) The installation surface must be strong enough to bear the inverter's weight for a long period time. (Please check
the inverter’s weight in the product specification of ANNEX B).
3) The inverter is protected to IP65, can be installed indoors and outdoors.
4) The humidity of the installation location should be below 100% without condensation.
5) The ambient temperature should be between -25°C to 60°C.
6) Install at eye-level for easy operation.
7) Do not install the inverter near television antenna or any other antennas and antenna cables.
8) Ensure the inverter is out of children's reach.
9) Install inverter at the locations with some cover or protection, to ensure the optimum operation, as per FIG.6-1.
10) Do not install in small closed cabinet where air cannot circulate freely. Do not put any other objects on the inverter,
as per FIG.6-2.
FIG.6-1 Inverter Installation Positions FIG.6-2 Forbid to Install in Small Closed Cabinet
11) Comply with the Min. clearance to walls, other inverters, or objects to ensure the installation and maintenance,
meanwhile for the good heat dissipation.

6 Installation
6 / 18
FIG.6-3 Installation Clearance Requirements
min.30c m
min.50cm
min.50cm
min.30c m min.30c m min.30c m min.30c m
min.30c mmin.30c mmin.30c m min.30c m
min.50cm
min.50cm min.50cm
min.50cm
min.50cm min.50cm
min.50cm
min.50cm
min.50cm
FIG.6-4 Staggered Installation Mode (Recommended)
12) Install the inverter vertically or at a maximum backward tilted angle of 15 degrees to facilitate heat dissipation.
≤15°
FIG.6-5 Installation Angle Requirements
13) Do not install the inverter outdoors in salt, sulfur or other corrosive areas.
The inverter would be corroded in salt area (i.e. marine environments), and the corrosion may cause fire. Salt area
refers to the region within 500 meters from the coast.
Direction Min. clearance (cm)
Above 50
Below 50
Sides 30
Front 30

6 Installation
7 / 18
Please consult the Canadian Solar Inc. Technical support department on the use of inverters in special climates (i.e.
salt, sulfur, or ammonia areas) which may affect the product warranty.
6.2 Mounting Wall-mounting Bracket
Danger
To avoid electrical shock or other injury, please inspect existing electronic or plumbing installations before
drilling holes.
Procedure:
1) Use the wall-mounting bracket as a template and mark the positions of the drill holes, then drill the 4 holes
accordingly, as per FIG. 6-6. (Diameter = 11mm, Depth ≥ 55mm).
Note: The external dimensions (W × H) of inverter are shown as dash line in FIG. 6-6.
237 45 164
74.5 250
374 45 164
74.5 250
FIG.6-6 Drilling Positions (W x H, 399 x 583mm)
2) Knock expansion anchors into the corresponding four holes, and then fix the wall-mounting bracket to the wall with
self-tapping screws, as per FIG. 6-7 & FIG. 6-8.
FIG.6-7 Install Expansion Anchors FIG.6-8 Fix Wall-mounting Bracket
6.3 Installing Inverter
Note: Must make sure the wall-mounting bracket has mounted on the wall firmly before install inverter.
Procedure:
1) Hang the inverter on wall-mounting bracket. Keep balance during the operation to prevent device damage from
colliding with walls or obstacles, as per FIG. 6-9.
2) Use two safety bolts to fix both sides of inverter to ensure the inverter fixed to the wall firmly, as per FIG. 6-10.
FIG. 6-9 Hang the Inverter on Wall-mounting Bracket FIG. 6-10 Fix Both Sides of Inverter

7 Electrical Connection
8 / 18
7 Electrical Connection
7.1 Safety
Danger
Danger to life due to lethal voltages in the inverter!
Before performing any work on the inverter, must disconnect both AC and DC sides.
Warning
Damage to electronic components may happen due to electrostatic discharge. Take appropriate ESD
precautions when replacing and installing the inverter.
7.2 Recommended Cables
Cable Name Cable Type Conductor Cross-Sectional
Area Outer Diameter
DC input cable PV cable, above 600V. 4~6mm25.5~7.4mm
AC output cable Three cores outdoor cable with
copper conductor (FIG.7-5).6~16mm213~18mm
PE cable Single core outdoor cable with
copper conductor. 6mm2N/A
Note: No cable is supplied.
7.3 Meter/CT Connection (Optional)
The inverter has integrated export limitation functionality. To use this function, a power meter or a CT must be
installed.
For installation and operation methods, see ANNEX part of meter and CT installation guides.
7.4 Wiring PE Cable
To achieve ground protection purpose, the inverter must be connected to the AC grounding conductor of the utility
grid via PE cable.
Warning
Because of the transformerless design, the DC positive pole and DC negative pole of PV arrays
cannot do grounding.
Note: The PE point at the AC output point is used only as a PE equipotential point, and cannot substitute for the PE
point on the enclosure.
Procedure:
1) Insert the grounding conductor into the suitable terminal lug and crimp the contact.
2) Fix terminal lug on external ground point by screw M4x10. Torque: 1.4 N.m.
FIG. 7-1 External Grounding Point Position

7 Electrical Connection
9 / 18
7.5 Wiring AC Output
Warning
To ensure the inverter can be safely disconnected with load, must install a separate single-phase
circuit-breaker or other load disconnection unit for each inverter.
Note: The inverter is equipped with integrated RCM (Residual current operated monitor) and RCD
(Residual current protective device). The rated residual current of the circuit breaker must be over
300mA when the AC circuit breaker with RCM function selected.
Notice
When using inverter comply with VDE-AR-N 4105:
The total capacity of PV-inverter system cannot exceed 13.8KVA, and the adjustment function of
inverter's displacement power factor must comply with VDE-AR-N 4105.
When using inverter comply with CEI 0-21:
The total capacity of PV-inverter is more than 3KW and less than or equal 6KW, the inverter's
displacement power factor is adjustable between 0.95 leading to 0.95 lagging, and do not need external
SPI.
The total capacity of PV-inverter is more than 6KW, the inverter's displacement power factor is
adjustable between 0.9 leading to 0.9 lagging, meanwhile need external SPI.
Install an independent two-pole circuit breaker at the output side of the inverter for protection, the recommended AC
circuit-breaker specifications are as follows:
Inverter type AC circuit-breaker specifications
CSI-7K-S22002-ED 40 A
CSI-8K-S22002-ED 50 A
CSI-9K-S22002-ED 50 A
Recommend AC cable length:
Conductor cross section
Inverter Type
Allowed Max. length
6.0 mm210.0 mm216.0 mm2
CSI-7K-S22002-ED 33 (m) 56 (m) 89 (m)
CSI-8K-S22002-ED 29 (m) 48 (m) 77 (m)
CSI-9K-S22002-ED 26 (m) 43 (m) 69 (m)
AC Three-core cable:
The grid connection is established by using three-core cable (L, N, and PE, as per FIG. 7-4).
Components of AC connector:
The AC connector is made of four components: pressure nut, sealing ring, threaded sleeve, and plug.
Socket elementThreaded sleeveSealing ring
Pressure screw
Pressure Nut Sealing Ring Threaded Sleeve Plug (Metal pins and shell)
FIG. 7-2 Components of Connector
AC wiring procedure:
1) Strip the cable’s jacket, and then adjust the relative length of L, N and PE cables, to make the length of PE cable is at
least 5mm longer than L and N ones, as per FIG. 7-3.
2）When using flexible cables, the conductor must be connected with suitable core end ferrules according to DIN
46228-4, as per FIG. 7-4.
50.0
45.0
PE
N
L
8.0 L N PE
FIG. 7-3 Adjust the Cable Length FIG. 7-4 Crimp the Three-core’s Ferrule

7 Electrical Connection
10 / 18
3) Insert L, N, and PE conductors into the corresponding pins of the plug (as per FIG. 7-5), then tighten the fastening
screws by screwdriver to fix conductors firmly. Torque, 2 N.m.
B
BB-B
L
N
PE
PE N
L
FIG. 7-5 AC Terminal Positions
4) Push the threaded sleeve into the plug, screw the press nut tightly.
FIG. 7-6 Tightening the AC Connector
5) Finally, insert the AC connector into the corresponding AC receptacle on the inverter. Pay attention to the polarities
to make sure the correct assembling.
FIG. 7-7 AC receptacle FIG. 7-8 Installing the AC Connector
7.6 Wiring DC Input
Note: The DC connectors are in paired (negative and positive ones). Pay attention to the polarities when assembling.
FIG. 7-9 DC Input Connectors
7.6.1 Requirement for DC input
This single-phase inverter is equipped with two MPP trackers.
Requirements for PV module strings:
1) Same type.
2) The power, voltage (startup and open-circuit voltage) and operating current of each PV strings must meet the
allowable value of the inverter.
Note: Consider temperature coefficient of the PV modules.
Check the inverter specification in section ANNEX B.

7 Electrical Connection
11 / 18
7.6.2 Wiring
There are two types of DC connectors—MC4/H4, check the connector’s type for completeness before assembling.
Negative Coupler & Contactor Pin Positive Coupler & Contactor Pin.
FIG. 7-10 Structure Illustration of DC Connector
Procedure:
1) Strip the insulation of cable to about 7.5mm with the wire stripper tool. Note do not damage the conductors when
do the stripping, as per FIG. 7-11.
2) Place the contact around the conductors of the stripped cable, then crimp the contact with wire crimping pliers, as
per FIG. 7-12.
Ensure the conductors completely wrapped without loosening or damage.
FIG. 7-11 Strip the Cable Insulating Layer FIG. 7-12 Crimp the Contact
3) Insert the crimped contact pin into the connector back until one click audibly. Pull lightly on the cable to ensure the
contact pins of the connectors are engaged. Pay attention to the polarities when assembling.
4) Tighten the nut with a special wrench. Torque: 2.5~2.9 N.m.
FIG. 7-13 Insert the Contact FIG. 7-14 Tighten the Cable Gland
5) Insert the assembled connectors into the bottom terminal of the inverter until one sound click audibly.
The locked DC connectors can only be disconnected with special tool.
FIG. 7-15 Illustration of DC Ports

8 Communication
12 / 18
7.6.3 Connecting PV array (DC input)
Danger
Ensure the DC switch and AC breaker both are disconnected from the inverter before connect the PV
arrays.
Never connect PV array positive or negative pole to the ground, it could cause serious damages to the
inverter.
Warning
Improper operation during the wiring process can cause fatal injury to the operator or unrecoverable
damage to the inverter.
Only qualified personnel can perform the wiring work.
8 Communication
8.1 Communication Mode
Two communication patterns for option, WiFi data logger, and RS485 (Built-in module).
8.2 WiFi Data Logger
More details for installation and operation methods please refer to the WiFi data logger user manual.
FIG. 8-1 Communication Port
8.3 RS485
Connect the communication port with a RS485-to-usb port converter via RS485 serial line, and then connect this
module to PC.
9 Commissioning Inverter
9.1 Checking Electrical
1) Check PE connections with multi-meter:
To make sure all the bare metal surfaces of the inverter are grounded.
2) Check DC voltage value:
Check if the DC voltage of the PV string exceeds the allowable range.
3) Check the polarities of the DC voltage:
To make sure the DC polarities are correct.
4) Check the ground insulation of PV array with multi-meter:
Ensure the impedance value of ground insulation is more than 1MOhm.
9.2 Checking Mechanical
1) Ensure the inverter is installed properly, fixed with a Wall-mounting bracket firmly, and the upper cover is installed
correctly.
2) Ensure the AC connectors are installed properly and fixed firmly.
3) Ensure the dust covers are sealed reliably which are used for the empty DC connectors.
4) Ensure all the cables are connected effectively, fixed firmly, and no visible damages to the insulation layers.

10 Daily Maintenance
13 / 18
9.3 Start-up Inverter
After electrical and mechanical inspections, first turn on the AC main switch/breaker, then turn on the DC switch. The
inverter will start automatically when the DC input voltage meets the performance requirement of the utility grid.
Normally there will be three statuses during the operation (refer to the LED indications):
1) Waiting:
Conditions: The initial DC voltage of the PV strings is greater than the Min. DC input voltage, but is lower than the DC
start-up input voltage.
Inverter cannot start-up normally and cannot feed power into utility grid either.
2) Checking:
Conditions: The initial voltage of the PV strings exceeds the start-up DC input voltage of the inverter. Meanwhile both
the voltage and frequency of the utility grid are normal.
Inverter will check the feeding conditions immediately. If anything wrong during checking, inverter will switch to the
“Fault” mode.
3) Normal:
Conditions: All the checking results are normal.
Inverter will switch to “Normal” mode and feed power into utility grid.
The inverter may turn on and off continuously during the period of low or absent sunlight due to the shortage of
power generated by the PV modules. If such fault occurs frequently, please contact the maintenance personnel.
Note: For the monitoring and local APP information, please refer to documents published on our website at:
https://monitoring.csisolar.com/platformSelect.
9.4 LED Indicators
No. Operate states LED Indicators Flicker frequency
1Wait Green LED flicker 1s On，1s Off
2Normal Green LED always on /
3Error Red LED always on /
9.5 Switch off
DANGER
Never connect or disconnect the DC connectors under load.
Procedure:
1) Turn off the AC main switch.
2) Turn off the DC switch.
3) Check the inverter operating status.
4) Wait until LED indicator has gone out, which indicates the inverter has been shut down.
10 Daily Maintenance
DANGER
Risk of inverter damage or personal injury due to incorrect service!
Always keep in mind that the inverter is powered by dual sources: PV array and utility grid.
Before any service work, observe the following procedure.
1) Disconnect the inverter from the utility grid side first and then PV array.
2) Wait at least 5 minutes after shun down the inverter, for inner capacitors to discharge completely.
3) Verify that no voltage and current existing with appropriate testing devices.
CAUTION
Keep non-related persons away!
A temporary warning sign or barrier must be posted to keep non-related persons away while
performing electrical connection and service work.

11 SPD Maintenance
14 / 18
NOTICE
Risk of inverter damage if it is improperly serviced.
Use accessories and spare parts approved by the inverter manufacturer only. Never modify the
inverter or other components of the inverter. The loss of any or all warranty rights may follow if
otherwise.
NOTICE
Any malfunction that may impair the inverter safety operation must be repaired immediately before
the inverter is restarted.
Inverter contains no customer serviceable parts inside. Please contact local authorized personnel if
any service work is required.
Information
Servicing of the device in accordance with the manual should never be undertaken in the absence of
proper tools, test equipments or the more recent revision of the manual with has been clearly and
thoroughly understood.
Items Methods Period
System
clean
Check the temperature and dust of the inverter. Clean the inverter enclosure.
Check the humidity and dust of the environment.
Meanwhile check whether the filter function of the air inlet is ok.
Six months to a year (it
depends on the dust contents
in air)
11 SPD Maintenance
If surge protection device (SPD) is damaged, it is necessary to replace the damaged cores of the SPD in time, as per
FIG. 11-1.
1) Turn off the AC main switch.
2) Turn off the DC switch.
3) Wait for 5 minutes after shun down the inverter.
4) Remove the 4 screws on the inverter cover and open the cover.
5) Press and hold the spring clip on the upper and lower sides of the damaged core and replace it.
Note: If severely damaged, replace the SPD module directly.
Core
Base
FIG. 11-1 Replace the SPD

12 Trouble Shooting
15 / 18
12 Trouble Shooting
When inverter does not operate normally, we recommend the following actions for quick troubleshooting. Please
review the error list table carefully.
12.1 Warning
The different LED colors and flashing status identify the current operation statuses of the inverter. If the red color is
always on, it indicates the inverter fault. Usually the warnings can be cleared through an orderly shutdown / reset or a
self-corrective action performed by the inverter.
12.2 Errors
Error codes identify a possible equipment fault, or incorrect setting/ configuration. Any and all attempts to correct or
clear a fault must be performed by qualified personnel. Typically, the Errors code can be cleared once the cause or
fault is removed.
However, some of the (E) codes may cannot be cleared, in this case please contact the dealer or Canadian Solar to
replace a new one.
Errors as indicated in the table below:
Error Code Error Message Suggestion
F-100 Over temperature 1. Check heatsink for obstructions/ventilation.
2. Check the ambient temperature around the inverter.
F-101 High DC input voltage
1. Disconnect the DC switch, remove the DC connector, measure the voltage of the PV string, and
check if it exceeds the input-voltage specification of the inverter.
2. If exceed the specification, re-layout the PV module string.
3. If not exceed the specification, while the error still exits, please contact Customer Service.
F-103 Unconnected grid
1. Turn off DC switch, remove AC connector, measure the voltage between fire line and the zero
line, then check if it is consistent with the grid-connected specification of inverter.
2. Inconsistent, check if the AC main switch is connected, check if the power supply is normal
working.
3. Consistent, connect the AC connector, turn on the DC Switch.
4. If error message still exists, contact Customer service.
F-104 Inverter grid-connected
relay fault Contact Customer service.
F-105 Grid frequency fault
1. If power grid frequency returns to normal, the inverter will restore the grid connection
automatically.
2. If error message still exists, contact Customer service.
F-106 Grid voltage fault
1. Turn off DC switch, remove AC connector, measure the voltage between fire line and the zero
line, then check if it is consistent with the grid-connected specification of inverter.
2. Inconsistent, check the grid layout.
3. Consistent, connect the AC connector, turn on DC Switch, inverter will restore the grid
connection automatically.
4. If error message still exists, contact Customer service.
F-107 DC component over range 1. Restart inverter.
2. If error message still exists, contact Customer service.
F-108 Current sensor fault 1. Wait until inverter restores normal work.
2. If error message still exists, contact Customer service.
F-110 Leakage current detection
unit fault
1. Check if there is any PV cable breakage.
2. Check if the PV modules grounding improperly.
3. Restart inverter.
4. If error message still exists, contact Customer service.
F-111 Leakage current fault 1. Check if PV strings grounding properly.
2. If error message still exists, contact Customer service.

13 Handling the Inverter
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F-112 DC insulation fault
1. Check if inverter grounding properly.
2. Check if the positive and negative poles of PV modules are short out to the PE cable.
3. Wait until inverter restores normal work.
4. If error message still exists, contact Customer service.
F-113 Leakage current detection
consistency error (Major)
1. Restart the inverter.
2. If error message still exists, contact Customer service.
F-114 Frequency detection
consistency error (Major)
1. Restart the inverter.
2. If error message still exists, contact Customer service.
F-115
Power grid voltage
detection consistency
error (Major)
F-116 Leakage current detection
consistency error (Minor)
F-117 Frequency detection
consistency error (Minor)
F-118
Power grid voltage
detection consistency
error (Minor)
F-123 Secondary memory failure
1. Restart the inverter.
2. If error message still exists, contact Customer service.
F-124 Clock failure
F-125 Internal communication
failure
F-129 Main memory failure
13 Handling the Inverter
13.1 Removing Inverter
1) Turn off the inverter as described in section 10 and section 11.
2) Remove all the connection cables from the inverter.
3) Unscrew the fixing screws on both sides of the inverter.
4) Remove the inverter from the bracket.
Note: Before performing any work, ensure that you are familiar with this document.
13.2 Packing Inverter
If possible, use the original packaging, or the packaging that is suitable for the weight and dimensions of the inverter.
13.3 Disposing Inverter
Do not dispose the obsolete inverters or accessories together with household waste. Please refer to the
disposal regulations.

ANNEX A: Acronyms and Abbreviations
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ANNEX A: Acronyms and Abbreviations
AC alternating current
CT current transformer
DC direct current
GPRS general packet radio service
LED light emitting diode
MPPT maximum power point tracking
PC personal computer
PE protecting earthing
PV photovoltaic
RCD residual current protective device
RCM residual current operated monitor
SPD surge protection device
THDi Total Harmonic Current Distortion
WiFi wireless fidelity
WEEE waste electrical and electrical equipment