AJ-03 — Too long DHW heat-up time required

¿Qué significa AJ-03 ?

The unit is taking an excessively long time to heat domestic hot water (DHW).

• Low incoming water temperature
• Heating element or heat exchanger issue
• Reduced refrigerant charge

Haga clic en los pasos para seguir su progreso.

1. 1

   Check the temperature of the incoming water supply.

2. 2

   Ensure the unit is sized correctly for the hot water demand.

3. 3

   Inspect the heat exchanger for scale buildup.

4. 4

   A technician should verify refrigerant levels and heating components.