What causes fault code PKG-009 (Shrink Tunnel Temperature Alarm)?

Heater element burned out — zone running cold. Temperature controller output stuck — SSR failed. Thermocouple dislodged from tunnel wall. Blower motor failed — heat not circulating evenly. Product blocking airflow through tunnel

How do I fix fault code PKG-009?

Check temperature at each zone with external probe. Verify all heater elements — measure resistance on each. Check thermocouple mounting — must be in good thermal contact. Verify blower motors are running — air must circulate for even heating. Clear any product jams inside tunnel. Check SSR operation — use clamp meter on heater circuit

Shrink Tunnel Temperature Alarm

PKG-009

Shrink tunnel heating section temperature exceeds setpoint or falls below minimum for proper film shrink.

medium packaging

packaging shrink tunnel temperature heater film

Probable Causes (ranked)

Heater element burned out — zone running cold
Temperature controller output stuck — SSR failed
Thermocouple dislodged from tunnel wall
Blower motor failed — heat not circulating evenly
Product blocking airflow through tunnel

Fix Steps

1 Check temperature at each zone with external probe
2 Verify all heater elements — measure resistance on each
3 Check thermocouple mounting — must be in good thermal contact
4 Verify blower motors are running — air must circulate for even heating
5 Clear any product jams inside tunnel
6 Check SSR operation — use clamp meter on heater circuit

Field Trick

Run your hand along the tunnel exit (carefully). If one side is hot and the other cold, a heater element or blower on the cold side has failed.

Suggested Replacement Parts

Parts matched to fault category: Proximity Sensor

Allen-Bradley 872C Inductive Prox Sensor 18mm P/N: 872C-D5NP18-D4 3-wire DC NPN, 18mm barrel, 5mm sensing range, shielded

AutomationDirect $42.00 Amazon $65.00 Grainger $78.00

IFM Efector IFS204 Inductive Sensor 12mm P/N: IFS204 12mm flush mount, 4mm range, M12 connector, PNP NO

AutomationDirect $38.00 Amazon $45.00 Digikey $52.00

Balluff BES 18mm Inductive Sensor P/N: BES M18MI-PSC80B-S04K 18mm barrel, 8mm range, PNP NO, M12 connector

AutomationDirect $48.00 McMaster-Carr $55.00 Amazon $50.00

Prices are estimates. Verify part numbers match your equipment before ordering.

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