1.7.8 Interpretation of Analog Controller Lights
Power light on, heat light cycling, trouble light off, and melt light on:
•If fryer oil temperature is below 180ºF (82ºC), the lights indicate the unit is operating normally.
•If the oil temperature is above 180ºF (82ºC) and the heat light continues to cycle as if in the melt cycle, this may indicate a defective probe circuit or low incoming 12VAC to the controller.
Power light on, heat light on, trouble light off, and melt light off:
•If the fryer oil temperature is above 180ºF (82ºC) and below the setpoint temperature, the lights indicate the unit is operating properly.
•If the oil temperature is above the temperature set on the control knob and the heat light remains lit, this may indicate a defective probe circuit.
Power light on, heat light off, trouble light on, and melt light off:
•If the fryer oil temperature is below 410ºF (210ºC), the lights indicate one of the following:
a.The probe circuit is defective, or
b.There is a connection problem on pins 2 or 10 on the
•If the fryer oil temperature is above 410ºF (210ºC), the lights indicate a
1.8Troubleshooting Guides
The troubleshooting guides on the following pages are intended to assist service technicians in quickly isolating the probable causes of equipment malfunctions by following a logical, systematic process. An additional set of operator troubleshooting guides is contained in Chapter 6 of the Pro
1.8.1 Troubleshooting the 24 VAC Circuit
Prior to checking for problems associated with the 24 VAC circuit, ensure that the unit is connected to a power supply, the drain valve is fully closed, and the controller is on and is calling for heat (decimal appears between first two digits in controller display).
NOTE: All voltage measurements must be made within 4 seconds of the unit calling for heat. If unit does not fire within 4 seconds, ignition modules will lock out and controller must be turned off, then on to reset.
