E-201: High condenser pressure

Q: How do I check a E-201 fault?

1. Check condenser approach temperature 2. Verify condenser water flow and pump status 3. Check cooling tower performance 4. Arrange qualified refrigerant check Safety: Refrigerant work requires certified technicians; isolate power before panel access.

Probable causes

Fouled condenser tubes
Low condenser water flow
High cooling-water temperature
Non-condensables in refrigerant

Step-by-step checks

Check condenser approach temperature
Verify condenser water flow and pump status
Check cooling tower performance
Arrange qualified refrigerant check

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

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

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Frequently asked questions

What does E-201 mean on a Chiller?

E-201 usually indicates: High condenser pressure. Confirm the meaning in the manufacturer's manual for your model.

What causes E-201?

Fouled condenser tubes; Low condenser water flow; High cooling-water temperature; Non-condensables in refrigerant.

How do I check a E-201 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.