Part number 20046, Rev 0
13
Troubleshooting error messages for Microprocessor control
Display Messages
To correct
E1
Appears when either the up or down key is
pressed when not in the programming mode
If the E1 message appears even when no keys
are being pressed, replace control.
E2
Appears if the control settings are not properly
stored in memory.
Check all settings and correct if necessary.
EP
Appears when the probe is open, shorted or
sensing a temperature that is out of range.
Check to see if the sensed temperature is out
of range. If not, check for probe damage by
comparing it to a known ambient temperature
between -30°F and 220°F. Replace the probe if
necessary.
EE
Appears if the EPROM data has been
corrupted.
This condition cannot be field repaired.
Replace the control.
CL
Appears if calibration mode has been entered.
Remove power to the control for at least five
seconds. Reapply power. If the CL message
still appeared, replace the control.