Inverter Signal - Panasonic MDF-DU702VH Service Manual

Inverter signal

(1) Outline
In this model, an inverter is used for compressor control. In order to investigate the status of the
compressor and the inverter, signal verification of the inverter side is necessary.
(2) The error signal on the inverter side is as follows.
Failure Mode
Normal operation
Thermostat failure
Inverter failure
Compressor failure
LED operation
1 blink each 15 s
2 blinks each 5 s
3 blinks each 5 s
4 blinks each 5 s
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