Friedrich AS - W126BMS0 Service Manual page 65

Part 4 Trouble Shooting
7) CH40: CT Sensor Error (Open/Short)
Check voltage measurement
Is AC input
on the input current (Fig.1)
current sensing part
at the power-on standby
normal?
state DC 0V ± 0.2V
DC voltage measurement
Is the Comp
at the measurement point in
phase Current sensor
figure 2 at power-on
part normal?
standby state -> measured
value : within 2.5V ± 0.2V
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