T121 - Circuit B Low Saturated Suction Temperature Alert

¿Qué significa T121 ?

An alert indicating low suction temperature in Circuit B. The circuit will stop as a precaution.

• Low refrigerant charge
• Low airflow
• Dirty coil
• Broken fan belt
• TXV problem

Haga clic en los pasos para seguir su progreso.

1. 1

   Replace the air filter if it is dirty.

2. 2

   Ensure the evaporator coil is clean.

3. 3

   Check that the indoor fan is running properly.

4. 4

   A technician should inspect the refrigerant charge and TXV.