Zanussi ZS12V70CCHI Service Manual page 48

3. If a value is read at the motor supply ends, whether the motor circuit of the main board is robust should be controlled.
– Attach the motor socket to its place, give energy to the air conditioner and turn it on. In this case, a voltage between 210 Vdc
and 340 Vdc at the red and black ends of the motor should be measured. When making this measurement, it is necessary to
take the measuring tool to Vdc (correct current measuring) state and make measurements as red probe/red motor cable and
black probe/black motor cable. If there is voltage in the range specified above according to the measurement result, the motor
board circuit is robust but the motor is faulty.
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– Measurement should be done between the black and white ends of the motor while the air conditioner is operating and 15
Vdc voltage should be seen. Red probe of the measuring tool should be at the white end of the motor and its black probe at
the black end of the motor. Measurement should always be performed at the correct current grade. If measurement result is
15 Vdc, the board is robust but the motor is faulty. If voltage measurement cannot be performed, the motor is faulty.
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– ement cannot be performed, the motor is faulty.
– Measurement should be done between the black and yellow ends of the motor while the air conditioner is operating and
a voltage between 0 and 6.5 Vdc should be measured. Red measurement probe will be at the yellow end and the black
measurement probe will be at the black end. If a voltage in the range specified above can be measured, the board is robust
but the motor is faulty. If voltage measurement cannot be performed, the motor is faulty.
Important Note: DC type fan motor cannot be controlled with external standard network voltage. Therefore, testing is
not appropriate.
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