AC310 Universal AC Drive Service Manual
3.9 OH Fault Detection and Maintenance
1. GND1 as a reference ground, measuring HEAT, the normal voltage is 0.5V-1V. If the HEAT
voltage is abnormal, the power board voltage detection circuit is abnormal, test the power
board voltage detection circuit.
2. HEAT -IN abnormal voltage, for the control board input circuit module temperature
collection failure, replace the corresponding resistors: R86, R87, R88, R89, or capacitors C9,
C10.
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