W-506: High outlet dew point

Q: How do I check a W-506 fault?

1. Check dryer operation 2. Test drain traps 3. Record dew point Safety: Nitrogen is an asphyxiant; check oxygen levels before entering enclosed spaces.

Probable causes

Dryer fault upstream
Drain trap failure

Step-by-step checks

Check dryer operation
Test drain traps
Record dew point

Safety: Nitrogen is an asphyxiant; check oxygen levels before entering enclosed spaces.

Sample code — verify with the OEM manual for your exact model.

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Frequently asked questions

What does W-506 mean on a Nitrogen Generator?

W-506 usually indicates: High outlet dew point. Confirm the meaning in the manufacturer's manual for your model.

What causes W-506?

Dryer fault upstream; Drain trap failure.

How do I check a W-506 fault?

Work through the numbered checks above in order, recording readings as you go. Nitrogen is an asphyxiant; check oxygen levels before entering enclosed spaces.

Other Nitrogen Generator codes

Disclaimer: Fault code information is guidance only. Codes and meanings vary between manufacturers and models — always follow the manufacturer's manual and your site's safety procedures, and use qualified personnel for electrical, pressure, refrigerant and combustion work.