Why is there no hot water from my A.O. Smith CAHP-120 Water Heater?
If you're not getting hot water from your A.O. Smith water heater, try these steps: First, open the top service panel and the door of the upper element, and then press the reset button. Also, check the water heater and the hot water outlet tube for any leakage. For detailed maintenance, refer to the Maintenance Instructions.
What to do if my A.O. Smith CAHP-120 Water Heater is leaking?
If your A.O. Smith water heater is leaking, there could be several reasons. Check the drain valve to ensure it's completely closed. If the T&P relief valve outlet is leaking, it might be due to high water temperature or high water pressure. For closed systems, install a second T&P relief valve with a lower pressure setting than the first. To relieve heat expansion, install an expanded tank with appropriate pressure.
How to fix noise from A.O. Smith CAHP-120 Water Heater?
If your A.O. Smith water heater is making noise, it could be due to scale buildup. Clean the scale from the bottom of the tank and the surface of the heating elements. For detailed maintenance, refer to the Maintenance Instructions.
What to do if I see diagnostic codes on my A.O. Smith CAHP-120?
If your A.O. Smith Water Heater shows diagnostic codes, disconnect the power and charge enough water, and then connect the power supply. Some codes will recover automatically. If the issue persists, turn off the unit and clean the evaporator.
General| Brand | A.O. Smith |
|---|---|
| Model | CAHP-120 Series |
| Category | Water Heater |
| Language | English |
Guidelines for selecting an appropriate installation site for the water heater.
Specifies clearance needed around the unit for proper installation and service.
Key safety and electrical requirements before connecting power to the unit.
Tables detailing cable sizes and breaker capacities for different models.
Steps for filling the water tank and pipes before initial operation.
Instructions on how to drain the water heater for service or storage.
General advice and checklist before contacting service.
Common causes and checks for lack of hot water.
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