Revision Date – 22/12/2014 page 32
Using a DC voltmeter, check that approximately
12V DC is measured between terminals “A” and
upper “C” on the compressor control unit.
NOTE: The voltage measurement may vary
depending on the sensitivity of the DC
volt meter.
TEST PASS – 12V DC IS MEASURED BETWEEN TERMINALS “A” AND UPPER “C”
With 100-240V AC power supplied to terminals “L” and “N”, approximately 12V DC should be
measured between terminals “A” and upper “C”. In this case, the AC power section of the control unit
is functioning correctly.
The compressor control unit has now been eliminated as a possible fault.
TEST FAIL – 12V DC IS NOT MEASURED BETWEEN TERMINALS “A” AND UPPER “C”
With 100-240V AC power supplied to terminals “L” and “N”, approximately 12V DC is not measured
between terminals “A” and upper “C”. In this case, the AC power section of the control unit is faulty.
The compressor control unit has been identified as faulty and should be replaced (refer to section 9.3).
Replace the control unit and repeat this test.
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