SMA SC 200 - Manual (Page 82)

Troubleshooting and Problem Solving SMA Solar Technology AG
82 SC-BEN100262 User Manual
15.1.3 Warnings
No. Description
281 Error text:
Ground fault or SPD defect Error type 1
Cause of error:
The alert chain is interrupted (see wiring diagram).
• Surge voltage protector damaged.
• Back-up fuse(s) damaged on the grid side or generator side (if present).
• The insulation resistance of the PV system is lower than the set threshold value.
• The biasing circuit breaker of the transformer has tripped.
• One of the redundant power supply units is defective.
Corrective measures:
• Check fault signaling of the surge voltage protectors and replace them if necessary.
• Check protector back-up fuse(s), and replace if necessary.
• Check PV system's insulation resistance.
• In the event of an insulation fault, check strings under load-free conditions. Separate
and connect individual strings to determine which string is faulty.
• Check the function of the ground fault monitoring system.
• Switch the biasing circuit breaker of the transformer back on.
• Check the LEDs on the power supply unit and the monitoring module.
• Contact Sunny Central Service.
283 Error text:
cabinet Temp. Error type 1
Cause of error:
The threshold value (parameter TMin or TMax) for the permissible cabinet temperature has
been breached (too high or too low).
Corrective measures:
• Check function of cabinet cooling fans.
• Clean or replace clogged air filters.
• Check ambient temperature, and adjust it if necessary.
284 Error text:
Temperature sensor Error type 1
Cause of error:
External or internal temperature sensor is defective.
Corrective measure:
• Check sensors.