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Compressor Top High Temperature Protection (Olp) Diagnosis/Solution - Pioneer YN020GMFI22M2D Service Manual

Multi split system outdoor units/two, three, four and five zones
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8.4.1.8 Compressor top high temperature protection (OLP) diagnosis and solution.
Malfunction decision
conditions
Supposed causes
If the sampling voltage is not 5V, the LED will display the
failure.
● Wiring mistake
● Over load protector faulty
● System block
● Outdoor PCB faulty
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