plymouth Workshop Repair Guides

Plymouth Workshop Service and Repair Manuals

Control Assembly, HVAC|Service and Repair > < Control Test
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Control Assembly: Testing and Inspection
Control Unit Resistor Test

1. Connect ohmmeter leads to resistor wire terminals.
2. With control lever at 65, resistance should be less than 390 ohms.
3. Slowly move temperature control lever to right until ohmmeter reading is 930 ohms. Ohmmeter reading should increase smoothly and temperature

lever should be near the 75 setting.

4. Move temperature control lever to 85. Ohmmeter reading should smoothly increase to at least 1500 ohms. 

Control Assembly, HVAC|Service and Repair > < Control Test