WSTECH APS Series - APS Error Code 19; APS Error Code 5; APS Error Code 7; APS Error Code 8

Original Operating Instructions
APS Series – Outdoor Hybrid Inverter
Troubleshooting
APS-Series 120 Operating Instructions v320 EN
Page 132 of 213
7.1.1 APS Error Codes 3, 4
Corrective action:
1. Check the fluid level (Section 4.4.4).
 In case of low fluid level, refill the cooling system up to the fluid level.
2. Open doors in Sections +C3, +C6 (Figure 13).
3. Check all hose couplings and hose connections for leakage.
 In case of leakage, please contact customer service (Section 11).
7.1.2 APS Error Code 5
Corrective action:
1. Check if the Enable switch is in position OFF (Figure 13).
 If the Enable switch is in position OFF, switch the Enable switch in
position ON.
2. Check if all cabinet doors are closed (Figure 13, Figure 14).
 If the cabinet doors are open, close all cabinet doors.
7.1.3 APS Error Code 7
NOTICE: For monitoring the MV switchgear the customer must connect the feedback
contacts (Section 4.9).
Corrective action:
1. Check the MV switchgear.
7.1.4 APS Error Code 8
Corrective action:
1. Start the option heating manually via VNC access (Function and Interface
Description).
2. Check if the heating is ON.
7.1.5 APS Error Code 9
NOTICE: For monitoring the MV switchgear the customer must connect the feedback
contacts (Section 4.9).
Corrective action:
1. Check the MV transformer for short-circuit and internal faults.
2. Check the fluid level of the MV transformer.
 If the fluid level is too low, please contact customer service
(Section 11).
7.1.6 APS Error Code 19
Corrective action:
1. Check the +25 V
DC
supply voltage.
 Measure the voltage on power supply (-TB1) (Section +C1).