Despatch Protocol Controller - Manual (Page 30)

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All errors must be cleared to perform calibration. Any active error will inhibit the calibration function.
To clear a Hi-Limit control error [HL ERROR] caused by lost of calibration (Hi-Limit indication of
500
E C or 932E F in the diagnostic mode):
1. Increase the Hi-Limit setpoint to 500 E C or 932E F.
2. Press the Reset key.
7. Loosely fasten the Protocol controller to the oven.
8. Re-connect AC power to the oven.
9. Press the Power on pushbutton to energize oven.
10. Press the Tune key. The display reads [TUNE ].
11. Use the – and • keys to scroll through the tune mode configuration. The
controller must be configured to operate in
EF (Fahrenheit) and CZO
should be set to zero (0.0).
a. Record initial tune mode parameters prior to making any changes.
b. Press the – key. The display reads [CODE ***].
c. Press the following key sequence: +, -, -, +, -, +.
The display reads [PID TUNE]. Protocol is in the tune mode.
d. Use the following table to change the tune mode parameters.