Warm humid air, wet cleaning, unsealed penetrations or thermal bridges can create droplets.
In short: dry the area and record exactly when it returns.
A line at a panel joint does not automatically prove a loose Cam-Lock. Inspect alignment and sealing; do not blindly tighten locks or cover moisture with silicone.
Symptoms
Water droplets or running moisture on interior panel surfaces, which may freeze into a frost layer. Because it points to humid air meeting a cold wall — not normal coil frost — the fix is always about finding and closing the moisture path.
Diagnose the cause
| Possible cause | How to check | Solution |
|---|---|---|
| Humid-air infiltration | Worse on humid days or after many door openings. | Fit a strip curtain, limit door openings, check the door seal. |
| Panel joint leak | Condensation localised near a specific joint or corner. | Re-seal the joint with food-safe silicone; check the cam-lock tension. |
| Wet products loaded | Moisture evaporates off product and condenses on walls. | Let products dry before loading; cover open containers. |
The cam-lock joint leak
Localised condensation at a panel joint is worth a second look on a CAM-LOCK room. It often means a cam-lock has lost tension and the joint has opened a hair, breaking the airtight seal. Re-tensioning the cam usually closes the gap. Persistent leakage after re-tensioning suggests a damaged gasket within the joint. See Panel specifications for how the cam-lock seal works.
Related articles
- Ice & condensation: where it belongs
- Ice buildup on the evaporator
- Ice on the door frame
- Prevention & when to call a technician
- Panel specifications
For replacement parts, technical documentation, or a referral to a qualified service technician, contact [email protected].
