ERS EMCH-10W/1, Installation And User Manual

Page: 184 / 190

Step 3: DC detective wire check (if the unit has change the PCB or reconnect the wire, the following item
should be checked)
Direction of the current in DC supply wire which is running through the inductor should be the same as the
direction of arrow marked on the inductor.
2) L1/L4 troubleshooting
Step 1: Check the DC voltage between terminal 1 and 2, the normal value should be 510V~580V, if the voltage is
lower than 510V, go to step 2.
Step 2: Check for rectifier wiring circuit. If wires are loose, fasten the wires. If wires are OK, replace the main
PCB.
1
2
89
V.2