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95
PB
COMPONENTS TESTING
Testing Component Voltage at Electronic Control Board
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before service or
installation. Extreme care must be used, if it
becomes necessary to work on equipment with
power applied.
Failure to do so could result in serious injury or
death.
1. THERMISTER VOLTAGS IS 4.7 VDC
2. DISPLAY BOARD VOLTAGE IS 5 VDC
3. RELAY VOLTAGE FROM LOGIC BOARD IS 4.7 VDC
4. VOLTAGE OFF TRANSFORMER TO LOGIC BOARD 12VDC
5. COMPRESSOR RELAY TO GROUND 5VDC
6. FAN RELAYS APPROX. 4.5 VDC
FIGURE 708 (ELECTRONIC CONTROL BOARD)