Remove top cover. Connect thermocouple test leads to pins on front end of printed circuit board.
(See appendix A for instructions on removing the top cover.)
The thermocouple reader should show ambient (room) temperature. If it shows a minus, or
negative, reading, switch the thermocouple test leads. If it shows no reading, the thermocouple
is defective (open). Connect the power pack to an AC outlet; connect the low voltage wire to the
unit's input plug. Turn
the propane valve on.
Plug the ribbon wire extending from the underside of the top cover into the PCB and select the
24/7 mode on the control panel.
The thermocouple reader should show a gradual, steady increase in temperature. When the
temperature reaches approximately 1950F (900C), the propane valve should begin to operate as
verified by an audible clicking sound.
In the event the temperature does not increase, check the heater circuit using the multimeter. A
12 volt AC reading should be present at the red heater terminals. If there is no voltage at the
heater terminals, replace the printed circuit board.
If there is a voltage, disconnect one of the heater wires at its terminal and check for continuity.
If the heater circuit shows an open condition, replace the burner assembly.
The valve operates on a pulsing voltage which is difficult to detect with a multimeter. If the valve
does not produce an audible clicking sound, replace the valve. If the valve still does not produce
a clicking sound at approximately 1950F (900C), replace the printed circuit board.
