Lennox MWMA018S4-*P - Component Protection; Fan Motor; Inverter Module Protection; Low Voltage Protection

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Red- Blue
Red - Yellow
Brown-Orange
Brown-White
Figure 82. Connector Pin-Out
30. Component Protection
30.1. Fan Motor
FanSpeedisoutofcontrol(DCfanmotor-Whenoutdoorfanspeedislowerthan300RPMorhigherthan24000RPMfor
60seconds,thewholeunitstopsandLEDdisplaysfailure.
30.2. Inverter Module Protection
Invertermoduleprotectionitselfhasaprotectionfunction against current, voltage and temperature, If theseprotections
happened,thecorrespondingcodewilldisplayonindoorunitLEDandA/Cwillstop.Theunitwillrecoverthreeminutedelay
aftertheprotectiondisappeared.
30.3. Low Voltage Protection
Ifthelowvoltageprotectionoccursandnotresumeswithin3minutes,itwillkeeptheprotectionalwaysafterrestartthe
machine.
30.4. Compressor Current Limit Protection
Ifthelowvoltageprotectionoccursandnotresumeswithin3minutes,itwillkeeptheprotectionalwaysafterrestartthe
machine.