W-220: Oil pressure low

Q: How do I check a W-220 fault?

1. Check oil level and heater 2. Inspect oil filter dP 3. Contact OEM service if persistent Safety: Refrigerant work requires certified technicians; isolate power before panel access.

Probable causes

Low oil level
Oil filter blocked
Refrigerant dilution

Step-by-step checks

Check oil level and heater
Inspect oil filter dP
Contact OEM service if persistent

Safety: Refrigerant work requires certified technicians; isolate power before panel access.

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

Ask the expert on WhatsApp

Frequently asked questions

What does W-220 mean on a Chiller?

W-220 usually indicates: Oil pressure low. Confirm the meaning in the manufacturer's manual for your model.

What causes W-220?

Low oil level; Oil filter blocked; Refrigerant dilution.

How do I check a W-220 fault?

Work through the numbered checks above in order, recording readings as you go. Refrigerant work requires certified technicians; isolate power before panel access.

Other Chiller 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.