Applicable Systems
YVAA
Symptoms
Temperature has exceeded the safe operating limit. The system has tripped to prevent thermal damage to components.
Possible Causes
- Cooling system performance degraded or flow restricted
- Excessive heat load beyond system capacity
- Temperature sensor calibration drift or failure
Troubleshooting Steps
- Step 1: Verify actual temperature with an independent measurement
Temperature confirmed above trip point - Step 2: Inspect cooling system components for proper operation
Cooling system fault identified and corrected - Step 3: Check temperature sensor calibration and wiring continuity
Sensor reading verified accurate
How to Reset
To reset: Clear the temperature alarm after confirming the cooling system is functioning properly.
Source: York YVAA Chiller Manual, Johnson Controls/York
Category: Chiller