4 flashes, 8 beeps - Dual Sensor Unplugged

What does 48 mean?

This code indicates that both the discharge pipe and air sensors are disconnected or have faulty connections. The system cannot get readings from these critical temperature points.

• Discharge pipe and Air Sensor unplugged
• Loose sensor connections

Click steps to track your progress.

1. 1

   Turn off the power to the unit.

2. 2

   Check the connections for both the discharge pipe sensor and the air sensor. Ensure they are firmly plugged in.

3. 3

   Inspect the wiring of both sensors for any damage.

4. 4

   If the issue persists after confirming connections, a technician should diagnose the sensors and wiring.