Mitsubishi Electric PURY-RP200 Service Handbook page 258

[ IX Troubleshooting ]
4. BC controller transformer
BC controller control board
CNTR CN03
Red White Red Red
Normal Abnormal
CNTR(1)-(3) about 58 ohm.
Open-phase or shorting
CN03(1)-(3) about 1.6 ohm.
* Before measuring the resistance, pull out the connector.
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HWE10140 GB