Preserve the installation record
Save the invoice, exact model, accessible nameplate photograph, installation date, and the time of each trip. Tell the providers whether power trips immediately or after heating.
Note any odor, unusual sound, leak, or visible damage without removing covers. Do not reset repeatedly or substitute a larger breaker.
Verify the circuit and heater match
The manufacturer-hosted residential electric guide 321249 requires suitable electrical protection, wiring, and the actual heater's wiring diagram. It is a conditional example, not circuit sizing for your home. Residential electric installation guide.
Ask the electrician to compare the supply, circuit, protection, connections, and grounding with the exact nameplate and current applicable requirements. Ask the water-heater installer to assess controls and heating components under the model's service information.
Identify who owns each investigation and correction. Do not let an unresolved circuit issue become only a heater warranty discussion.
Check commissioning
Ask for the installation and startup record, including whether the heater was properly filled and prepared before power was applied. Have the provider explain how any suspected startup damage was established.
Warm water does not show that every component is working or that the circuit is suitable. Request actual findings rather than another reset followed by a short temperature check.
Agree on return to use
The correction should address the diagnosed cause, any damaged parts, and required installation work. Request verification of heating and circuit operation under appropriate conditions.
Clarify installation follow-through, manufacturer coverage, electrician charges, and any exclusions before authorizing paid work.
Your next step is to contact the installer with the trip history and arrange qualified electrical review. Resume use only after the responsible providers have corrected and verified the problem.