Westinghouse Water Heater Error 45

⚡ Quick Answer: The Westinghouse water heater error 45 indicates a detected internal water leak, which may lead to a lack of hot water and unusual clicking sounds. Th... ✅ DIY Fixable

What Does Error 45 Mean?

The Westinghouse water heater error 45 indicates a detected internal water leak, which may lead to a lack of hot water and unusual clicking sounds. This error often shuts down the unit to prevent further damage. Inspect the unit for moisture or water accumulation at the bottom, as this is a sign of the leak.

Common Symptoms:

  • Error code 45 displayed on unit control panel
  • Possible moisture or internal water presence at bottom of unit
  • Unit may shut down or lock out operation to prevent damage

Possible Causes

  • Internal water leak detected by leak sensor (medium)

How to Fix Error 45

DIY Fix Check for visible leaks and power cycle

  1. Turn off power supply to the water heater.
  2. Inspect the base of the unit for any signs of moisture or water accumulation.
  3. Dry out any visible water at the bottom and allow unit to air dry.
  4. Restore power and check if the code clears.

Technician Only Diagnose and repair internal leak

  1. Turn power and water supply off to the unit.
  2. Open unit access panels and inspect internal components, leak sensor, and piping for the source of moisture.
  3. Repair or replace any leaking components (e.g., water connections, condensate drains) and verify leak sensor integrity.
  4. Test unit by restoring water and power; confirm error code no longer appears.

Parts needed: leak sensor, internal piping or seals, condensate drainage components

🛑 When to Call a Pro:
  • If water leakage is found inside the unit
  • If drying the unit does not clear the code
  • If you are not comfortable performing internal inspections

Next step

Choose the next step for 45

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Model number required

Browse by model — no specific failed part is claimed

Model-compatible Water Heater parts

Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.

Where can I find the model number?

Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.

Find a part that fits my model

Search results are not a diagnosis. Verify both the complete appliance model and the retailer's fit information before ordering.

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Technical Specifications

wattage 4500W
component Heating Element
resistance 10-30 ohms
part_number WH-HE-1000
voltage_rating 240V AC

Common Questions

What does 45 error mean on westinghouse water heater?

Error 45 means an internal water leak is detected, causing hot water issues.

Can I fix westinghouse water heater 45 error myself?

Yes, you can check for visible leaks and dry out the unit.

How much does it cost to fix 45 error?

Repair costs range from $150 to $500+, depending on parts and labor.

When should I call a technician for 45?

Call a technician if you find leaks inside the unit or if self-drying doesn't resolve the error.

Data last verified: 2026-07-25

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