ITR POLAR HD, Installation And Operating Manual

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Section 8, Operating the Heating Module
8-10 The POLAR™HD Heating Module
• The power button turns ON/OFF the power to the control
board. The Power LED (green) turns ON when the power to
the control board is ON.
Bypass Button
• The bypass button is for authorized service personnel
only.
Reset Button
• The reset button when pressed resets the control board.
Power LED (Green)
• The power LED (green) turns ON when the power to the
control board is ON. The LED flashes when the POLAR™HD
Heating Module is in Bypass mode.
AC Heat LED (Green)
• The AC Heat LED (Green) turns ON when a single or dual AC
immersion element(s) have been activated.
Compressor, Fuel Pump, Combustion Fan, Igniter (Green)
• The compressor, fuel pump, combustion fan, and igniter LED’s
(Green) turn ON when the component is ON, and will flash if
the component is electrically open or shorted.
Flame Out (Red)
• The Flame Out LED (Red) turns ON when a flame fault has
been detected.
Voltage Fault (Red)
• The voltage fault LED (Red) turns ON when a voltage fault
has been detected.
Low Water (Red)
• The Low Water LED (red) turns ON when a low coolant level
in the POLAR™HD Heating Module has been detected.