My hot water suddenly stopped; what details should I give a plumber?

Give them a short account of what changed and what you observed. Start with when you noticed the problem, whether there is no hot water or it is cooler than usual, and whether you checked more than one hot-water outlet. Say what type of water heater it appears to be only if you know; “not sure” is better than guessing.

Also report any words, lights, or codes displayed, plus visible signs such as water around the unit. Mention an unusual smell if you notice one. Don’t open the heater or remove covers to gather details. GE Appliances advises preparing the model and serial numbers, symptom description, and displayed fault code when contacting support; its guidance is specific to GE water heaters, so follow the manual or service provider’s instructions for other makes.[S1]

If it is safe and convenient, use the hot-water outlets you would normally use and note what you observe. You do not need to take anything apart or test the heater. Record whether the issue seems to affect one outlet, several, or all the ones you tried; if you did not check, say so.

For example: “At about 7 a.m., the bathroom and kitchen hot taps both seemed cold. I did not check the other outlets.” This describes observations, not a cause. The supplied GE support page says no or insufficient hot water can have different possible causes, including an open or leaking hot-water faucet, a power interruption, or equipment-related problems; those possibilities do not establish what is happening in your home.[S2]

Include the brand and model if plainly visible, and the serial number if you can read it without moving the heater, removing a cover, or reaching into an awkward or unsafe area. If the label is inaccessible, say “not available” and let the plumber advise you.

Mention whether you know the heater’s type, or write “type unknown.” GE Appliances recommends having model and serial numbers, a problem description, and any displayed fault code ready for its water-heater support contact. Its page also mentions purchase and installer details when available; include those if you already have them, but don’t delay asking for service to find them.[S1]

Use this briefing and leave unknown fields blank or mark them “not sure.” It keeps facts separate from guesses:

“Hello, I’m requesting help with a sudden hot-water problem.

1. First noticed: [date/time or approximate time].
2. What changed: [no hot water / water cooler than usual / other observation].
3. Outlets checked: [which ones, and what I observed at each].
4. Water heater brand/model: [details / not sure]. Serial number: [details / not available]. Type: [known type / not sure].
5. Displayed message or code: [exact text or code / none noticed / not checked].
6. Visible signs: [describe what you can see from a safe position / none noticed / not checked].
7. Other relevant timing or context: [brief details / none known].

I have not opened the equipment or attempted repairs. Please let me know what information you need next.”

Use exact wording for any display message rather than interpreting it. If you only saw the problem at one outlet, name that outlet instead of saying the whole home has no hot water.

Report what you can observe, where you see it, and when you noticed it; don’t try to investigate inside the unit. If a message or code is visible, copy it exactly or say that you could not read it. The GE support guidance recommends recording displayed fault codes, but the supplied sources do not establish the meaning of a particular code or provide a universal interpretation for all brands and models.[S1]

The supplied support page says causes vary and points readers to the model-specific owner’s manual or an installer or plumbing contractor for some issues; it does not establish a diagnosis for your heater.[S2]