If the refrigerant concentration exceeded the alarm level, which color/status would be shown?

• A. Red Flashing
• B. Red Steady
• C. Amber Flashing
• D. Green Steady

Answer: (B)

When refrigerant concentration crosses the alarm threshold, the indicator should show a continuous, urgent alarm. Red communicates danger, and a steady display shows the condition is ongoing rather than just a momentary fault or warning. So, red steady is the appropriate status. The other options either indicate normal (green steady), a warning (amber), or a transient/alternate alarm signaling (red or amber flashing), which don’t match a persistent alarm condition.