What causes fault code GEN-COOL1 (Cooling Water Temperature High)?

Cooling tower fans not running or underperforming. Chiller compressor faulted or refrigerant low. Cooling water flow reduced — pump issue or valve closed. Heat load increased — more equipment running than cooling system designed for. Fouling in heat exchanger — scale or biological growth

How do I fix fault code GEN-COOL1?

Check cooling tower/chiller status — restart if faulted. Verify cooling water flow — check pump operation and valve positions. Measure supply vs return temperatures — high delta-T = flow too low. Inspect heat exchangers for fouling — clean if needed. Verify cooling tower fan operation — all fans should be running in summer. If temporary, reduce production heat load until cooling is restored

Cooling Water Temperature High

GEN-COOL1

Cooling water supply temperature exceeds maximum for equipment cooling requirements. Equipment may overheat.

medium general

cooling water temperature chiller tower

Probable Causes (ranked)

Cooling tower fans not running or underperforming
Chiller compressor faulted or refrigerant low
Cooling water flow reduced — pump issue or valve closed
Heat load increased — more equipment running than cooling system designed for
Fouling in heat exchanger — scale or biological growth

Fix Steps

1 Check cooling tower/chiller status — restart if faulted
2 Verify cooling water flow — check pump operation and valve positions
3 Measure supply vs return temperatures — high delta-T = flow too low
4 Inspect heat exchangers for fouling — clean if needed
5 Verify cooling tower fan operation — all fans should be running in summer
6 If temporary, reduce production heat load until cooling is restored

Field Trick

Feel the cooling water supply and return lines. If both are hot, your cooling source (tower/chiller) is the problem. If supply is cool but return is very hot, you have a flow restriction.

Suggested Replacement Parts

Parts matched to fault category: Motor

Baldor/ABB 1HP TEFC Motor P/N: EM3554T 1HP, 1765RPM, 143TC frame, 230/460V, TEFC, premium efficiency

AutomationDirect $285.00 Amazon $310.00 Grainger $345.00

Prices are estimates. Verify part numbers match your equipment before ordering.

Need a deeper diagnosis with photo analysis and AI-powered troubleshooting?

Run Full Diagnosis