Amber Flashing indicates the refrigerant concentration has exceeded which level?

• A. Exceeded the alarm level
• B. Exceeded the critical level
• C. Exceeded the warning level
• D. Exceeded the alert level

Answer: (D)

In gas monitoring, indicators are used to show how close the refrigerant concentration is to unsafe levels, with different signals signaling different urgency. When you see amber flashing, that is the cue that the alert level has been exceeded. It means the concentration has risen into a higher, more urgent category than a simple warning, and you should act quickly according to your safety procedure—increase ventilation, check for sources, and be prepared to escalate actions if conditions continue to worsen. It’s not just a warning light, which would indicate the warning level, and it’s not the alarm or critical state, which would trigger louder alarms and more drastic safety actions.