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Stap 5
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Testing with Ready Light On (Water is Hot)
  • If the previous tests passed, immediately unplug the machine and perform the following continuity checks while the 95 deg thermostat is still in the tripped condition. The thermostat will take several minutes to cool and reset to the closed condition.

  • Reconnect the multi-meter across power plug (Line and Neutral) for the following tests:

  • Main Power Off = Open circuit, no continuity

  • Main Power On = Open circuit – the 95 deg. thermostat should be tripped (open), the boiler and pump are not in the circuit; any other result would be a fault condition.

  • Main Power On + Pump On and/or Steam Valve open = Very high resistance (varies) from 1.6 Meg. Ohm to open circuit – this can vary, it’s not a conclusive test. A low resistance (16 Ohms) could indicate the thermostat has closed (cooled) or malfunctioned - and the boiler is in the circuit. A higher resistance could indicate a problem with the pump.

  • Main Power On + Steam Switch On = 16 Ohms – The boiler is in the circuit and the 125 deg. thermostat is calling for heat; any other result would be a fault condition – an open circuit would indicate a problem with the steam switch or 125 deg. thermostat.

  • If the previous tests all pass, plug the machine into the wall outlet and run water through the steam valve until the Ready light goes out (to cool the boiler). Turn off the power and close the steam valve. The electrical components should be operating normally.

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