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1.9.8 Interpretation of Digital 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 nor-
mally.
• 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 con-
troller.
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 re-
mains 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 15-pin wiring harness.
• If the fryer oil temperature is above 410ºF (210ºC), the lights indicate a run-away heating cir-
cuit.
1.10 Troubleshooting Guides
The troubleshooting guides found in the pages that follow are intended to assist service technicians
in quickly isolating the probable causes of equipment malfunctions by following a logical, step-by-
step process.