PH91 — Low temperature protection of Evaporator

Was bedeutet PH91 ?

The evaporator coil has reached a low temperature, potentially leading to freezing. This protection prevents ice buildup.

• Low refrigerant charge
• Restricted airflow across the evaporator
• Dirty air filter
• Outdoor unit issues affecting heat transfer

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Check and clean the air filter for the indoor unit.

2. 2

   Ensure there are no obstructions blocking airflow into or out of the indoor unit.

3. 3

   Verify that the system is operating in cooling mode if temperatures are appropriate.

4. 4

   Contact a technician to check refrigerant levels and airflow.