dr or  HEATER MAY BE DRY WILL RETEST SHORTLY Message

There is Possibly a "Dry" (dr) Heater.

 

Check for Water Level, Flow Restrictions, Closed Valves, Air Bubbles, and Pump Prime, or contact your Dealer or Service Organization.

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_ML200Sm-DR-Fl

_ML400Sm-DR-Fl

_ML700Sm-DR-Fl

_ML900Sm-DR