High Limit Test - Welbilt Frymaster FilterQuick 3FQE30U Installation, Operation And Maintenance Manual

CODE ERROR MESSAGE
E71 OQS TEMP LOW
E72 TPM RANGE LOW
E73 TPM RANGE HIGH
E74 OQS ERROR
E75 OQS AIR ERROR
E76 OQS ERROR
E77-E80 N/A
6.2.7 High-Limit Test Mode
The high-limit test mode is used to test the high limit circuit. The high-limit test will destroy the oil.
It should only be performed with old oil. Shut the fryer off and call for service immediately if the
temperature reaches 460°F (238°C) without the high-limit tripping and the controller displays
HIGH LIMIT FAILURE alternating with DISCONNECT POWER with an alert tone during
testing.
The test is cancelled at any time by turning the fryer off. When the fryer is turned back on, it returns
to the operating mode and displays the product.
1. Press and hold the check () button until MAIN MENU is displayed followed by PRODUCT
SETUP.
2. Press the left arrow () button until TECH MODE is displayed.
3. Press the check () button.
4. Enter 3000.
5. Press the left arrow () button until HI LIMIT TEST is displayed.
6. Press the check () button.
The controller displays HIGH LIMIT YES/NO.
7. Press the up arrow () button.
8. The controller displays PRESS AND HOLD CHECK.
9. Press and hold the () button to initiate the high-limit test.
The vat begins to heat. The controller displays the actual vat temperature during the test.
The fryer continues heating until the high limit trips. Generally this happens once the temperature
reaches 423°F to 447°F (217°C to 231°C) for non-CE high limits and 405°F to 426°F (207°C to
219°C) for CE high limits.
Once the high-limit opens the controller displays HELP HI-2 alternating with the actual
Oil temperature is too low for a valid OQS reading. Filter at a
temperature between 300ºF (149ºC) and 375ºF (191ºC).
The TPM is too low for a valid OQS reading. The incorrect oil type
may be selected in the setup menu. The sensor may not be
calibrated for the oil type. See oil type chart. If issue continues
contact a FAS.
The TPM reading is too high for a valid OQS reading. Dispose the
oil.
The OQS has an internal error. If issue continues contact a FAS.
The OQS is detecting air in the oil. Check the O-rings and
check/tighten prescreen filter to ensure no air is entering the OQS
sensor. If issue continues contact a FAS.
The OQS sensor has a communication error. Check connections
to the OQS sensor. Power cycle the entire fryer battery.
continues contact a FAS.
N/A
6-7
EXPLANATION
If issue