Power Soak MX-220-HTS Owner's/Service Manual - Manual (Page 34)

33
Component Operation and Checks
RKC Heater Controller
The set temperature will be shown in the red illuminated display on the top right corner.
The actual temperature will be shown in the green illuminated display in the center. The
set temperature will then start blinking. You then push the "arrow up" or "arrow down"
button to the temperature setting you would like. When finished, press the “set” button
again. The range of adjustment is typically 114 to 120 degrees.
The RKC heat control is pre-programmed. There is no programming required.
There are three messages that may show up different than above:
• “uuuu” – This means that the current temperature of the water is below the
operating range (114°F-120°F). This is normal after filling the sink with water
below 114°F, and the heat contactor is pulled in (heating). If the heat contactor is
not pulled in, there is a problem. See troubleshooting guide.
• “oooo” – This means that the current temperature of the water is above the
operating range (114°F-120°F). This is normal after filling the sink with water
above 120°F, and the heat contactor is not pulled in (not heating). If the heat
contactor is pulled in, there is a problem. See troubleshooting guide.
• “Err” – If this happens, call the Metcraft service department at 800-944-0404.
The RKC heat control pins are marked, but may be difficult to identify. The following
diagram maps the pin locations. Note the three gold pins as reference: