Digital AP Controller Error Codes:
“Err.EEP” - Error with Memory Chip. Return/RMA entire unit and sensor.
“Err.tMP” or “Err.tEP” - Error with Temperature sensor. Make sure plug is fully inserted, and connection
isn’t damaged. Return/RMA entire unit and sensor.
“Err.Hul” - Error with Humidity sensor. Make sure plug is fully inserted, and connection isn’t
damaged. Return/RMA entire unit and sensor.
“Err.SEn” - Error with sensor probe. Make sure plug is fully inserted, and connection isn’t
damaged. Return/RMA entire unit and sensor.
“Err.Lig” - Photocell sensor. Return/RMA entire unit and sensor.
“Err.rtc” - Real time clock error (APCTMDT only). Return/RMA entire unit and sensor.