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Troubleshoot
Rheem tankless
water heater
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etc1) Turn off all hot water faucets (2) At remote control, turn off water heater by pressing Power on/off button (3) Wait 5 minutes and press Power on/off to turn on water heater (4) Turn on hot water faucet and check for error display (5) repeat if necessary (6) If problem contuinues, read error information below for do-it-yourself resources, and/or call 800-432-8373 for recommended service
-NO ERROR code? Read no error code pdf
-Tankless water heaters require regular maintenance to avoid typical problems: Maintain your water heater/ pdf
| 1) Links
for Paloma/Rheem/Richmond/Ruud Error codes from Rheem Palomastore.com/paloma_error_codes.html Palomatankless.com/owners/homeowner+trouble.lasso Paloma-Tankless-Error-Codes/ pdf Rheem fault codes/ pdf Rheem error codes/ pdf Fault codes/ pdf Sample Vent-kit installation/ pdf Roof venting/ pdf Ventilating tight house/ pdf Tankless operation overview/ pdf Typical SERVICE MANUAL & part replacement/ pdf Part and accessories/ pdf Crossover and Low water pressure Clean & maintain to prevent common error codes Maintain your water heater/ pdf Paloma use and care Rheem tankless parts Tankless condensing parts |
Error code C7 76 pdf
read pdf/ Open links to
left Error C7 75 PC board replacement, call Rheem Error code C7 pdf: read pdf, Open links to left Error code C8 76: PC board: open links to left, call Rheem Error code A1 21 A0 21: Open links to left Error code C2 11: Open links to left, clean combustion parts, call Rheem Error WT Error code 1L is 'lime build-up" Delime tankless yearly Error code C4 13 pdf: thermocouple, oxygen sensor/ vent problem. Read pdf/ Contact Rheem Error code C7 13: Contact Rheem Multiple error codes: Clean and maintain unit. PC board is bad. Contact Rheem or service tech No error code pdf Rheem error code P1/pdf: increase water flow/ replace plumbing check valve/ clean water filter each month/ Read pdf/ Also read no-error-code pdf for plumbing help Crossover can cause tankless to stop operating with no error code Error codes are starting place for solving problem: The same error code and solution on one tankless unit can have different cause and solution on another tankless unit. |
2) Rheem offers on-line CHAT and PHONE
rheem.com/products/tankless_water_heaters/customer_support/
Rheem 800-432-8373
Ask how 'qualified' service techs fix Rheem tankless water heater when there are no service manuals.
3) Typical Rheem manuals.
Read manual before you buy. Ask questions. Do the math.
4) Rheem site where you can find and download your manual, read spec sheets and promo brochures
rheem.com/hrc.aspx
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Rheem Electric Condensing Gas Rheem Gas Commercial |
Tankless bulletins | 
Water conservation |
5) Check following link for recall list:
tankless-recall.com/tanklessSearch.aspx
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6) Contact Rheem rheem.com/Contact.aspx |
7) Rheem technical bulletins
rheem.com/products/tankless_water_heaters/technical_bulletins/
rheem.com/WHTechBulletins.aspx?Category=Tankless%20Products
Typical SERVICE MANUAL & part replacement/ pdf
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8)
Search Fixya
questions and answers fixya.com/tags/rtg_74pvn http://www.fixya.com/tags/rheem_tech_support |
9) Post question on pro water heater forum:
thetankatwaterheaterrescue.com/forums
| 10) All costs are energy: Clean water filter monthly, Tankless must be de-limed each year: | |
| Tankless maintenance/ pdf Delime-tankless-water-heater.pdf |
Rheem-De-lime-tankless/ pdf Buy flushing system $199 Buy whole new tank-type water heater $207 |
Warranty | Paloma tankless warranty Rheem tankless certificate of warranty 2008 Rheem tankless warranty 2006 | |
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NO Rheem service
manuals? Rheem doesn't post them. Rheem says there are NO service manuals. BUT... How do service technicians know how to fix your tankless? By guessing? How do qualified service technicians exchange infomation with each other and with the customer if only certain people have the repair information? How do young people get enthusiatic about a field or a product if full information is not available? Call Rheem before you buy and ask why they refuse to provide clear repair information to consumers.: 800-432-8373 How to de-lime tankless/ pdf Read typical maintenance pdf But no service manuals. Other companies post service manuals: Bosch tankless service bullitens AO Smith/ American tankless troubleshoot guides Example American tankless service manual Bradford White tankless service manuals Where is Rheem? |
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Checklist to see if household suited for
tankless/pdf Avoid WT (wallet thickness) error. If wallet is more than 2" thick, then you are approved for tankless. |
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 Transformer $223 |
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Burner assembly $185 plus
installation Remote controls $99 Example component replacement/ pdf Image of parts list Pdf of Rheem parts Parts guide/ pdf Order parts/ no returns |
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 PC board and wiring diagram: Larger image |
I can fix it this weekend. American water heater tankless service manual Typical Rheem SERVICE MANUAL & part replacement/ pdf |
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Site: order parts How to repair tankless water heater: 1) Ohm out a few parts using Bosch service manual 2) Call Rheem twice. 3) Order parts with overnight delivery. No refunds. 4) Parts arrive. Call Rheem. 5) Call Rheem twice next day 6) Install part without a service manual. 7) Still doesn't work. 8) Sell part on e-bay with overnight delivery. 9) Install tank-type gas water heater for $350 10) Recycle metal as white goods for $6 per 100Lb |
 Whow, repairs are funner than yearly maintenance. |
How-to-install-gas-water-heater.html
All costs are energy: "The genius of tankless is not that they save money or energy. Because they don't.
The genius is marketing that targets folks who believe tankless save money and energy."
Flow Rate
Average faucet 2 gal per minute flow rate Average tub 2.5 gal per minute flow rate
1/2 gallon per minute means: Faucet must fill quart in 30 seconds and gallon in 60 seconds
3/4 gallon per minute means: Faucet must fill quart in 20 seconds and gallon in 80 seconds
See chart: How to test water flow: how far hot water travels in household pipe in 30 seconds
Crossover and Low water pressure can reduce flow rates
Higher thermostat setting can reduce hot water flow when more cold water is added at faucet to moderate temperature.
Support waterheatertimer.org and buy
the pdf 'How to change temperature on Rheem tankless'Or read your manual about dip switches.
Remember if you raise the temperature setting, risk is that tankless cannot heat water fast enough and unit will strat throwing error codes and shutting down. If unit is not working at optimal performance, the raising temperature is bad idea.
Add tempering tank to preheat incoming cold water
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Delime
tankless yearly Tankless cannot be exposed to more than 11 grain hard water Buy tankless flushing system $199 How to de-lime tankless/ pdf You can buy whole new tank-type heater for $200-300 and forget deliming every year. |
I like projects. |
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Clean
water filter monthly Warranty does not cover failure due to water problems Read typical maintenance pdf |
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 | Must use water softener Tankless cannot be exposed to more than 11 grains hardness in water Efficiency will decline within few months. Parts like pressure sensor will fail within 2 years De-liming will not prevent failure Warranty does not cover failure due to water problems Bradford White study Water softener research pdf Sediment in tank-type heaters | |||
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Troubleshoot Bosch tankless
Tankless turns-on after toilet is flushed
Difficult to diagnose noise in tankless
1-year-old tankless is blowing breaker
Hidden costs of tankless
Bradford White: "Tankless fall far short of payback"
Tankless cannot be exposed more than 11 grains hard water/ research pdf
| Tankless fuel cost calculator | All costs are energy Don't forget to Subtract hidden cost of tankless: Yearly maintenance, cost of repair, replacement, disposal, import trade balance |
| How to read the gas meter | Promise of unlimited hot water not consistant with water conservation or energy savings. |
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 | Research shows
that average family of four will save $1-8 on monthly gas bill. That
amounts to $12-$96 per year but does not account for cost of
installation, required yearly maintenance, cost of repairs, and
aggravation associated with expensive water heater that doesn’t work.
Plus the dang thing is not made in your town, parts are expensive, and
parts are not interchangeable between brands or available at the local
store. Reality Check: With tankless, you are connecting a complex computer with external sensors to your plumbing and electrical lines and to a gas burner with a vent pipe to outdoors. Plumbing lines, gas burners, vent pipes, and household electrical systems have plenty of problems on their own without a computer Pro-n-con tanklless |
