Sma 20000TL Service Manual User Manual

ServiceManualforInstallersSUNNYTRIPOWER20000TL/ 25000TLSTP20-25TL-SG-en-11 | Version 1.1ENGLISH

3 Cleaning the InverterDamage to the inverter due to the use of cleaning agents• If the inverter is dirty, clean the enclosure, the enclosure lid, the

4 Retrofitting the Surge Arrester TypeIIThe inverter is equipped ex works with surge arresters or it can be retrofitted (see Section14"Spare Pa

5 Troubleshooting5.1 Event MessagesMessage CauseInst. code valid The entered GridGuard code is valid. Protected parameters havenow been unlocked and

5.2 Error MessagesThe communication product (e.g. SunnyExplorer) displays the warnings and errors that apply tothe inverter, the utility grid or the

Event number Message, cause and corrective measures301Grid faultThe ten-minute average value of the grid voltage is no longer within the per-missible

Event number Message, cause and corrective measures701Frq. not permitted > Check parameterThe power frequency is not within the permissible range.

Event number Message, cause and corrective measures3302Unstable operation > Abort self-testThere is not enough power at the DC input of the inverte

Event number Message, cause and corrective measures3601High discharge curr. > Check generatorThe leakage currents of the inverter and the PV array

Event number Message, cause and corrective measures6512Minimum operating temperature not reachedThe inverter will only recommence grid feed-in once th

Event number Message, cause and corrective measures7102Parameter file not found or defectiveThe parameter file was not found or is defective. The upda

Legal ProvisionsThe information contained in these documents is property of SMA Solar Technology AG. Anypublication, whether in whole or in part, requ

Event number Message, cause and corrective measures7311Update language table failedUpdating the language table failed.Corrective measures:• Retry upda

Event number Message, cause and corrective measures9003Grid parameter lockedThe parameters are now locked. You cannot change the parameters.Corrective

6 Cleaning the Fans6.1 Cleaning the Fan at the BottomFirst clean the fan at the bottom of the inverter and then clean the fan on the left-hand side of

7.Damage to the fan due to compressed air• Clean the fan only with a soft brush, a paint brush, or a damp cloth.8. After cleaning, insert the fan plug

3.Damage to the inverter due to foreign bodies• Do not remove the ventilation grids permanently, otherwise foreign bodies couldpenetrate the enclosure

• Reinsert the ventilation grid until it snapsinto place.• Turn the rotary lock of the ventilation gridwith a flat-blade screwdriver until the slot is

7 Checking the Function of the FansYou can check the function of the fans by setting a parameter.The basic procedure for changing operating parameters

8 Checking the PV System for Ground FaultsIf the inverter displays the event numbers 3501, 3601 or 3701, there could be a ground fault. Theelectrical

Example: Location of the ground faultThe example shows a ground fault between the second and third PV module.3. If a definite ground fault cannot be m

Table of Contents1 Information on this Document ... 41.1 Validity...

1 Information on this Document1.1 ValidityThis document describes how to rectify certain errors and how to replace defective components.This document

1.4 NomenclatureComplete designation Designation in this documentSunnyTripower Inverter, product1 Information on this DocumentSMA Solar Technology AG

2 Safety2.1 Safety InformationThis section contains safety information that must be observed at all times when working on or withthe product.To preven

Damage to seals on the enclosure lids in subfreezing conditionsIf you open the upper and lower enclosure lids when temperatures are below freezing, th

6. Unscrew the two screws on the DC load-breakswitch using an Allen key (AF3).7. Pull the DC load-break switch down and out ofthe recess.8. Remove al

11. Release and remove all DC connectors. Insert aslotted screwdriver or an angled screwdriver(blade width 3.5mm) into one of the slide slotsand pull