Traulsen Door Open Alarm Error Code
The Intela-Traul control detects a cabinet door open longer than the allowed time.
Source: TRAULSEN/00051 INTELA-TRAUL Controls Serv Man TR35705 (10-04).pdf
What does Traulsen Door Open Alarm mean?
The door open alarm warns that a cabinet door has been open longer than five minutes, or that the control reads a door as open. On H1 and MIT 1 control versions the alarm is tied to the five-minute door-open timer. It protects against temperature loss from doors left ajar, but it can also be triggered by a faulty door switch or door/light relay.
Symptoms
- Alarm LED illuminated and horn sounding on the control
- Door appears open to the control even when closed
- Cabinet temperature climbing from lost cold air
- Water visible inside the door switch
Common causes
- Door(s) actually open longer than five minutes
- Failed door/light relay
- Water inside the door switch
- Mis-wired door switch
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Diagnostic steps
Close the doors
Confirm whether a door has been open longer than five minutes and close any open doors.
Check the door/light relay
Check for a failed door/light relay per the manual procedure; replace the relay if it is not OK.
Inspect the door switch for water
Check whether there is water in the door switch; if so, replace the door switch.
Check switch wiring
Check for a mis-wired door switch and replace the switch if the wiring is not correct.
Verify switch operation
With the switch removed, use a meter to confirm COM-to-NO reads open with the door closed; replace if not.
When to call a professional
Call a technician if the alarm persists with all doors closed, which points to a failed relay or door switch rather than operator behavior. Note that equipment with the MIT II controller version does not include a door/light relay. Removing doors and hinges, metering switch contacts, and replacing the relay are service tasks that should be done by qualified personnel.
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Other Traulsen Error Codes
Cabinet temperature has risen above the high-temperature alarm setpoint on the Intela-Traul control.
Cabinet temperature has dropped below the low-temperature alarm setpoint on the Intela-Traul control.
The Intela-Traul control detected an interruption of power to the unit.
The Intela-Traul control detects a refrigeration system leak based on discharge-line temperature behavior.
The Intela-Traul control signals that the condenser coil needs cleaning or that condenser airflow is restricted.
The Intela-Traul control reads the cabinet air sensor as open or shorted.
The Intela-Traul control reads the evaporator coil sensor as open or shorted.
The Intela-Traul control reads the discharge line sensor as open or shorted.
The Intela-Traul control reads the liquid line sensor as open or shorted.
Defrost has terminated by time rather than by temperature for 72 hours on the Intela-Traul control.