TROUBLESHOOTING
Dra wer Wa rmer ▪ Oper a tor’s M a n ual ▪ M N-46969 ▪ Rev 1 ▪ 5/ 2 0
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E-87 EEPROM Error Stored offsets corrupted Offsets reset to 0
Control may need a recalibration. Possible
bad EEPROM. Contact factory if problem
persists.
E-88 EEPROM Error All timer setpoints are reset to 1 minute.
Timers, if previously on, are now off.
Possible bad EEPROM
E-90 Button stuck A button has been held down for > 60
seconds. Adjust control Error will reset
when the problem has been resolved
E-91 Input failure Contact factory
E-dS Datakey error Datakey digital signature incompatible.
Cycle power, and install compatible Datakey
if error persists
E-dT Datakey error Datakey incompatible with control. Install
compatible Datakey.
E-dU Datakey unplugged Install Datakey and cycle power to control
to clear error.
dLto Datalogger has timed out Cycle power. Contact factory if error
persists.
dLSD Micro SD card not plugged in Plug in SD card and cycle power. Contact
factory if error persists.
Code Description Cause/Remedy
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