Pitco Frialator L22-345 Component Troubleshooting, Probe, Roll Out Switch, Gas Valve, Hi‐Limit

Pitco Solstice and Solstice Supreme High Efficiency Gas Fryers

Component Troubleshooting

The following sections provide troubleshooting information for the fryer components.

Probe

The resistance of the probe changes as the temperature changes. The resistance decreases as the temperature rises.

If the probe is suspect, check its resistance and the oil temperature (as close to the probe as possible) at which it was taken. Compare these values to the values in the probe resistance chart.

If the probe returns an open circuit or a 0 Ω reading, replace it. If the resistance varies more than 30 Ω when checked in the range of 325°F to 375°F (163°C to 191°C), the probe gives a false temperature reading on the computer. Calibrate the probe up to 10°F or replace it; however, the probe continues to operate at a slightly higher or lower temperature. See “Probe Resistance Chart” on page 85.

Allow the oil to cool and check the probe resistance at a lower temperature. Looking at the probe resistance chart, a greater resistance variation is tolerated at a lower temperature.

Roll Out Switch

The rollout switch is located between the two center burners just above the pilot assembly. The normal temperature for this area is in the range of 150°F to 170°F (66°C to 77°C). The rollout switch trips at an ambient temperature of 212°F (100°C) and interrupts the neutral side of the SO relay (the relay that controls the pilot). Check the temperature with a probe in the general area that the switch is located with the door closed. If higher temperatures occur, the following issues may be the cause:

SCB Solenoid is stuck in the open position.

SCB relay is stuck in the “NO” position.

Down draft on the flue.

Blockage in the flue or heat tubes.

There is not an 18 inch minimum clearance above the flue to any obstruction.

Gas Valve

The gas valve has a dual 24 VAC operator and opens when the correct voltage is supplied to the operator.

With 24 VAC applied across the PV-MV/PV connections, the pilot valve operator opens, allowing gas to flow to the pilot. With 24 VAC applied across the MV- MV/PV connections, the main valve operator opens, allowing gas to flow to the main burners.

Hi‐Limit

The hi-limit switch is a closed switch until the temperature at the hi-limit bulb reaches 450°F ±15°F (232°C ±15°C). The oil temperature needs to drop approximately 45°F (7°C) before it resets. If it does not reset after the oil has cooled, it is defective.

SG/SSH Series Service Manual 80