What causes fault code PKG-007 (Heat Seal Temperature Out of Range)?

Heater element failing — resistance increasing, output decreasing. Thermocouple failed or dislodged — reading incorrect temperature. Temperature controller fault — check for error display. Insulation around seal bar degraded — heat loss to surroundings. SSR (Solid State Relay) failed — stuck on or stuck off

How do I fix fault code PKG-007?

Check actual temperature with external thermocouple/IR thermometer. Compare reading to controller display — if different, thermocouple is bad. Measure heater element resistance — compare to spec. Check SSR — if failed ON, temperature will overshoot continuously. If failed OFF, heater won't energize — replace SSR. Inspect thermocouple wiring — reseat connections at controller

Heat Seal Temperature Out of Range

PKG-007

Heat seal bar temperature is above or below the specified sealing range. Seal quality may be compromised.

medium packaging

packaging heat seal temperature thermocouple ssr

Probable Causes (ranked)

Heater element failing — resistance increasing, output decreasing
Thermocouple failed or dislodged — reading incorrect temperature
Temperature controller fault — check for error display
Insulation around seal bar degraded — heat loss to surroundings
SSR (Solid State Relay) failed — stuck on or stuck off

Fix Steps

1 Check actual temperature with external thermocouple/IR thermometer
2 Compare reading to controller display — if different, thermocouple is bad
3 Measure heater element resistance — compare to spec
4 Check SSR — if failed ON, temperature will overshoot continuously
5 If failed OFF, heater won't energize — replace SSR
6 Inspect thermocouple wiring — reseat connections at controller

Field Trick

Touch the SSR heatsink. If it's extremely hot with the heater off, the SSR is shorted ON. Replace it before it damages the seal bar.

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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