Applicable Systems
YVAA
Symptoms
An electrical fault has been detected. The system has shut down to prevent electrical damage or hazard.
Possible Causes
- Phase loss or imbalance in power supply
- Wiring connection loose or corroded
- Protective device tripped due to overload or short circuit
Troubleshooting Steps
- Step 1: Check incoming power supply for voltage, phase balance, and sequence
Power supply voltage and phases correct - Step 2: Inspect all electrical connections for tightness and corrosion
All connections tight and corrosion-free - Step 3: Test protective devices and replace if faulty
Protective devices function correctly
How to Reset
To reset: Reset the electrical protection after correcting the supply or wiring fault.
Source: York YVAA Chiller Manual, Johnson Controls/York
Category: Chiller