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CO2 Gas Detection / Leak Alarm
A CO2 gas-detection alarm in the plant room or sales area signals a leak. CO2 is heavier than air, colorless, and odorless — rising ppm is an asphyxiation risk and must be treated as a safety event, not just a refrigerant loss.
Symptoms
- Gas-detection controller in warning or high/evacuate alarm (alarm setpoints are site-specific — confirm the configured levels)
- Repeated charge loss / low-charge alarms on the rack
- Frost or hissing at a fitting; sensor in a low/pit area alarming first
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