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

Page: 182 / 190

Fig. A Fig.B Fig.C Fig.D
If the resistance values are normal, then go to step 2.
Step 2: Module check
1) DC voltage between terminal P and terminal N should be 1.41 times the local power supply voltage.
2) DC voltage between terminal 1 and 2 should be 510V
～
580V.
3) Disconnect the terminal 3, 4, and 5 from inverter compressor. Measure the resistance between any two
terminals among terminal 1, 2, 3, 4, and 5. All the values should be infinite. If any of the value approximates to 0,
the inverter module is damaged and should be replaced.
Then replace the inverter module.
P
N
1 2 3 4 5
87
V.2