OHH,  HH,  or  HTR TEMP LMT SERVICE REQD  Message

There is an "Over Heated Heater" (OHH or HH) Condition.

One of the Water Temp Sensors has detected 118°F (47.8°C) In the Heater and Spa Functions are Disabled.  You Must Press Any Button to Reset when Water is below 108°F (42.2°C).  Check for Water Level, Flow Restrictions, Closed Valves, Air Bubbles, and Pump Prime, or Continue for a Detailed Test Procedure.

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_ML200Sm-HH-Fl

_ML400Sm-OHH-Fl

_ML700Sm-OHH-Fl

_ML900Sm-OHH