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Pioneer WYD-GLFI SERIES Service Manual page 22

Wd indoor / yn outdoor units series dc inverter air conditioner dc inverter split wall-mounted ductless heat pumps

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Check

power factor

correction– Test the

Test the DC voltage between DC+ and DC-.

pins of rectifier bridge, fast recovery diode

(FRD)

and

IGBT

elements

for

any

breakdown, short circuiting or damage.

21

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Wd series Yn series