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Tankless water heater won't turn on, has power just does not…

Customer Question
Tankless water heater won't...

Tankless water heater won't turn on, has power just does not deliver hot water

Contractor's Assistant: Have you tried power cycling the appliance -- unplugging it and leaving it off for a few hours?

I did but plugged it right back in

Contractor's Assistant: Do you plan on doing the work yourself?

I did ..but did not let it sit for a few hours, would that make a difference?

Contractor's Assistant: Anything else we should know to help you best?

It worked just fine, then last night no hot water and this morning same thing

Submitted: 7 months ago.Category: HVAC
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Answered in 1 hour by:
11/26/2017
HVAC Technician: Phil, Mechanical Engineer replied 7 months ago
Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 9,722
Experience: Retired HVAC/ Electrical & Boiler contractor. Industrial
Verified

Hello, I need the brand and model number to complete a diagnosis for you. So far it sounds like a blown fuse, bad printed circuit board or stuck flow switch.

,

Take a close up, exceedingly well focused photo of the wiring diagram glued inside the front panel, and I will mark it up with trouble shooting instructions. Use the 'add files' link next to your send button to get the photo(s) to me.

We can go from there with training, coaching and diagnosis.... without a time limit, In depth with as much detail as needed , after you rate this answer:

Select the 'finish and rate your expert link' near the top of your page and click on it.

My goal is to give you the best experience possible! I hope I have earned a 5 star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

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OPENING STATEMENTS

Important note about RATING my work:

I am a retired mechanical engineer and HVAC/electrical/ refrigeration and boiler contractor ... with 56 years in this business. The last 20 of those years consulting for major firms nationally.. and with over 8,000 questions answered here since 2009, with a 98.5% satisfaction rating.

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All I ask is please respect me and my input by selecting the***RATING LINK***at the top of your page, that is the only way I am credited through the site. Rating does not affect your charges nor ability to refund if not satisfied.

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If you need to be coached through a full diagnosis/repair,and wiring etc. for up to two days, and wish to be trained to use test instruments...... that goes well beyond' Just a simple Answer' of course, and goes beyond what most other experts here offer.....rate my answer so far positively.. . and I will deliver that training and coaching to you All on the same dime so to speak.

That said, I cannot guarantee that you will not do something unsafe, or cause damages. You take that risk.

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Lacking a positive rating I can spend days helping a person at my own expense and loose my shirt, shorts and socks on the deal.

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If you wish to accept the companies $25 phone call offer, if indeed they send you one, this will go a *lot faster, but it IS 100% optional... or we can continue here in this dialog box at no additional charge.

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Phil, Mechanical Engineer
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Experience: Retired HVAC/ Electrical & Boiler contractor. Industrial

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