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Troubleshoot
Rheem tankless water heater There are no service manuals,
... so ask questions before you buy:
1) Is there a qualified service person located near you. 2) How will the service person know how to fix it without a service manual? For example, what is the ohm range for incoming water temperature sensor? 3) How much do parts cost? 4) What will it cost to repair if the service person must guess at a fix? 5) Will Rheem supply you with support in event of a problem, other that telling you to call service? Answer: No. If the service person gets a service manual or service procedure of any kind, forward to me and I will post. |
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Gas odor | If you smell gas, leave building immediately and call
gas company from outside Natural gas is lighter than air and odor will rise to ceiling. Propane gas is heavier than air and will settle to floor. Do not install propane tankless in basement. |
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Models | etc Crossover models and general parts sheet Cross reference/ pdf |
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Will not turn ON | Nothing
happens when water is flowing through tankless unit: Unit will not power ON/ pdf Check the electric 2008/pdf How to light tankless 2009 How to light tankless 2012 |
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Fuse |
There is a 3-amp power
line fuse and/or 5-amp board
fuse located on PC board (circuit board). Fuse trips when heat on the line exceeds rating on fuse. This stops damage to vulnerable electronic parts. If fuse is blowing, maybe there is a short circuit or overheated part on the PC board. Replace board. Pay for service. See 2012 image of fuse See 2008 image Another fuse image Check the electric troubleshoot from 2008/pdf Tankless gas water heater must be plugged into 120Volt outlet to supply power to electronics and sensors |
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120Volt More electric wiring |
Electricity
must be ON / Outlet must have correct
polarity Applies to gas Tankless No electric power = no hot water Tankless gas units require 120Volt outlet. Outlet must provide at least 80% rated voltage. Read product manual. Do not connect to 240Volt or 208V or 277V etc. Voltages other than 120 volt AC can damage circuitry on tankless. Do not connect tankless directly to a PV solar panel that supplies DC voltage, or any source of DC power. Although a 48 VDC tankless might be interesting concept for rinsing off the livestock. Recommend dedicated circuit (one breaker supplies power to outlet, and no other outlets). See illustration of 120V circuit Do not use extension cord. Generally, extension cords do not deliver reliable power without occasional voltage drop. Outlet must have correct polarity, and be grounded. Use circuit-analyzer to check outlet. Buy: Circuit analyzers at Amazon |
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Electric
tankless Tankless electric require 208-240Volt Resource How to wire tankless electric |
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Action for Error
code |
What
to do when Rheem tankless error code is displayed: What to do/ pdf Maybe pushing both up-and-down arrows on remote control will reset error. 1) Turn off all hot water faucets (2) Power off: At remote control, turn off water heater by pressing Power on/off button (3) Power on: 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 continues, read error information below for do-it-yourself resources, and/or call 800-432-8373 for recommended service and to hear Rheem tell you to call installer first, and/or service technician next. Rheem does not post service manuals. -NO ERROR code? Read no error code pdf -Tankless water heaters require regular maintenance to avoid typical problems: Maintain your water heater/ pdf Maintain water heater 2012/ pdf |
Error codes Error codes 2012 Error codes/ 2008 service manual Error codes 1 thru 99 Error codes/ Rheem tankless service manual Error codes from Rheem Paloma store.com/Paloma_error_codes.html Paloma-Tankless-Error-Codes/ pdf Rheem fault codes/ pdf Rheem error codes/ pdf Fault codes/ pdf Tankless service bulletins Multiple error codes could mean PC board failure. Call Rheem and they will send new PCB. Don't buy a tankless. |
Error code C7 76 pdf
read pdf/ Open links to
left Error C7 75 PC board replacement, call Rheem How to replace rheem circuit board Error IL : delime yearly tankless pdf Error code C7 pdf: read pdf, Open links to left Error 76 from service manual Error code C8 76: PC board: open links to left, call Rheem Error 82: wrong gas / bad PC board/ set for high altitude using dip switches/ pdf Error code A1 21 A0 21: Open links to left Error code C2 11: Open links to left, clean combustion parts, call Rheem Error code 11 troubleshoot Error WT Error code 1L is 'lime build-up" Delime tankless yearly Error code C4 13 pdf: Error code 13 .pdf Error code 13 troubleshoot/ pdf thermocouple, oxygen sensor/ vent problem. Read pdf/ Contact Rheem Error code C7 13: Contact Rheem Error 10 Error 12 Multiple error codes: Clean and maintain unit. PC board is bad. Contact Rheem or service tech Rheem error code P1/pdf: increase water flow/ replace plumbing check valve/ clean water filter each month/ Read pdf/ Also read Error code P1 not enough water flow |
How
to install circuit board on Rheem tankless water heater ... might apply
to your model Instructions for outdoor unit: Install the new PCB Install the Programming Chip in connector A on the PCB. Turn power back on to the unit. Put up Dip switch numbers 1 and 2 into the “On” position. Press and hold the SW3 button until the red light on the PCB goes completely solid. Let go of the button and put down Dip switch numbers 1 and 2. Press and hold the SW3 button, while holding down the SW3 button, keep tapping the SW1 until the remote reads the same minimum manifold reading as the old PCB. Let go of all buttons. Press and hold the SW3 button, while holding down the SW3 button, keep tapping the SW2 until the remote reads the same maximum manifold reading as the old PCB. Let go of all buttons. Unit is now programmed; do not start without the front cover back on the unit. |
Error 76 Cause: Bad remote control -or- Bad wire between tankless and remote control -or- Bad PC board Tankless will operate without remote control Use 2-wire 18 gauge thermostat wire Tankless will work with or without UMC 117 control Trace remote wire where it connects to unit, and remove wire connection. Default temperature without remote control is 120 degrees F. Tankless must remain plugged into 120Volt electrical outlet. Outlet must have correct polarity and be grounded. Check outlet with basic circuit analyzer Green indicator shows when tankless is plugged into 120Volt Red shows when tankless is heating water If red indicator turns on-and-off when no tap is drawing water, then put ear against pipe and listen for water leak. Maybe pushing both up-and-down arrows on remote control will reset error. Read pdf: Error code C7 76 pdf Unit will not power ON/ pdf How to install Rheem remote control/ pdf How to adjust temperature using remote control/ pdf Buy: Main control at Amazon 2nd control for bathroom RTG20009 18 ga wire wire for remote control Thermostat wire |
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Error
IL Build up of scale inside heat exchanger. You must use water softener with tankless water heater or parts will fail within 2 years Tankless heat exchanger is prone to scale build-up, and must be delimed each year. Error code IL means delime. Deliming will not restore full efficiency. Read research |
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tankless
pressure relief valve Attach to service valve installed on hot side. Must be on Hot side so valve can monitor water temperature as it leaves tankless Purpose of TP valve is to release water when temperature or pressure exceed dangerous levels. TP valve is safety feature. Attach 3/4" plastic or metal pipe from TP going downward to within 6" of floor at nearby floor drain. Pipe cannot be threaded at termination or capped-off or obstructed. When installing TP, apply 6 wraps teflon tape on threads. TP releasing large amounts water periodically can mean bad thermostat or problem with tankless unit. TP can release water when TP valve is defective, and when debris is caught under lever. Use fingers, raise TP lever and then gently lower back into place. If TP continues leaking or drizzling, then replace TP valve. Buy: Rheem tankless TP temperature-pressure relief valve Resource: TP valve code Troubleshoot TP valve |
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Got a bug? |
More error codes/ Possible PC board failure Error codes do not apply to each model Multiple error codes could mean PC board failure
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Clear
error code maybe... Clear fault history |
Clear fault history/ page 11 service manual
2008 Service manual 2008 Clear IL error code |
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No error code? |
No
error code pdf No error code 2/ pdf Unit will not power ON/ pdf Crossover and Low water pressure Sample Vent-kit installation/ pdf Roof venting/ pdf Ventilating tight house/ pdf Read spec sheet Maximum 35' length for vent Venting specs Chart Rheem generally require .4 GPM minimum activation rate of flow and .25 GPM minimum rate of flow to keep heating Keep water filter clean. Must use water softener. Bad faucet cartridge, or recirculation check valve can cause no heating: Crossover Very cold incoming water can cause tankless not to keep up with thermostat set point. Install tempering tank Reduce temperature setting Default temperature setting for new tankless 100 degrees F. Without remote: default 120 degrees F Minimum temperature setting 85 degrees F Tankless must be connected to 120V outlet with correct polarity. Electrical: standby 3-5 watt, operating 100 watt |
Do the
maintenance Woo Hoo |
Prevent common error codes Clean water filter monthly, delime tankless yearly!! Big family fun!! Tankless operation overview/ pdf Maintain your water heater/ pdf Maintain water heater 2012/ pdf Removal and cleaning Rheem Tankless burner Paloma use and care Buy flushing system $199 or Buy whole new tank-type water heater $207 |
I like projects |
Of course it doesn't work ... you're taking two showers at one time !" |
Get out your wallet moneypit. Rheem will tell you to call installer or call qualified service technician. So you ask how 'qualified' service techs fix Rheem tankless water heater when there are no service manuals. Buy another one, lol: Tankless water heaters at Amazon |
Remember, the purpose of the corporation is to remove all employees except those willing to mislead you in exchange for less pay. |
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Clean
water filter monthly Error P1 Warranty does not cover failure due to water problems Symptom can include low water flow Turn off tankless at remote control, Turn off water, release pressure at faucet, remove and clean filter, or replace filter. Check for other filters on household water line. Also check for crossflow and crossover: Read typical maintenance pdf Maintain water heater 2012/ pdf Crossflow |
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How to drain tankless How-to-drain-tankless.pdf |
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Tankless Warranty:
1 year labor, 6 year parts Same as ordinary tank-type heater Rheem tankless warranty 2013 Paloma tankless warranty Rheem tankless certificate of warranty 2008 Rheem tankless warranty 2006 Paloma limited warranty / Limited warranty? No labor? Wait a minute. Why doesn't warranty match the claims of 20-year lifespan? Oh that's right, Rheem is a special category of 'person' called a Corporation, so they allowed to lie you up to get money, and it's protected by law !! Of course it's fraud if you do it to them. And they got laws for that too. Don't forget, you have no hot water while waiting for warranty claim. Install tank-type heater for $600 from Lowes and get your money back. |
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wear safety glasses |
Avoid warranty claims: install
tankless according to product manual Make sure unit has adequate clean air supply ... install louvered door, don't insulate doors, open windows and let the fresh scent of deregulated business fill the house. Avoid dust, lint, grease, damp and dirty environments. Avoid installing any gas appliance in areas with bleach, pool chemicals, process chemicals etc. Chemicals get sucked into air intake, and will corrode combustion parts and cause early demise of water heater. Vent must have condensate drain to prevent acidic water from dripping back down the vent pipe into the combustion chamber where it will eventually burn a hole through the heat exchanger. Tankless generally require dedicated vent and cannot be vented into a shared vent with other gas appliance such as furnace, stove etc. Having a vent fan, such as bathroom vent fan etc, cannot be installed in same room. A vent fan, whole house attic fan, or other vented appliances can prevent proper venting of tankless (or any gas water heater). Read the manual. Protect your warranty rights,eliminate common error codes by following advisories, maintenance, and installation. |
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Venting:
Vertical and horizontal kits & Condensate drain | Resources: Tankless venting/ pdf Bradford White venting .pdf | ||||||
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Venting
Black soot indicates
improper vent on any type gas appliance.
All gas appliances must be properly vented or the combustion by-product can kill. Evidence of bad vent can be headache that goes away when you leave house. Also lethargic, unresponsive people. Immediately remove people from home and lay on side. Do not lay on back. Call emergency. Open windows. Call plumber to check vent. |
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Venting a tankless Tankless venting Read your manual for specifics Use category III or schedule 40 pvc as shown in product manual. Ordinary 3-4" galvanized vent pipe will NOT work. Aluminum vent that is typically used for clothes dryer will NOT work for any type gas appliance, unless you're under water financially and intending to set an illiquid asset afire. Venting is important for the higher heat from tankless, since larger gas line supports larger burner and more-high-temperature toxic by-product must be vented outdoors where it can assist nature. Must have condensate drain so acidic combustion by-product does not drip into heat exchanger and burn hole through expensive metal alloy heat exchanger,,, of course you don't know if condensate drain works until heat exchanger gets a hole a few years from now. Oh well, it's only money. If condensate drain works right, the acidic water goes into your floor drain, drain lines and sewer connection ... which will deteriorate materials not made of PVC or stainless. Do not use with cast iron plumbing... any non-stainless metal will corrode with the acidic water vapor. Bradford White venting .pdf |
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Condensate
drain Burning hydrocarbon produces combustion by-product including CO2 CO NO SO and acidic water vapor. These respiratory poisons are puffing out of every vent stack across globe. To offset this reality, a bunch of special people call corporations are puffing out a slogan that says 'natural gas is clean burning' ... well, er uh, except you can't breathe the clean-burning poison.... which is why there is a vent. Tankless burn more fuel per gallon of heated water than tank-type heater. This is necessary to raise temperature as water quickly passes in a pipe. This is why adequate incoming air supply is important and why tankless require larger vent pipe. The pipe must be made of material resistant to acidic water vapor, such as PVC or stainless steel. The acidic water vapor will condense inside vent pipe, and drip back into tankless unit. To prevent acidic water from dripping down a burning a hole in the heat exchanger, a condensate drain is required. The condensate drain redirects acidic water away from the tankless and down into a nearby sewer drain, where the acid will destroy vulnerable types of pipe, before emptying into your drinking water and oceans that contain your food. As a result, the 'clean burning poisons' end up in your body one way or the other. Buy: High temperature Tankless condensate drain Resources; Rheem condensate drain /pdf 9 ways to save with water heater |
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Gas line Connect tankless with at least 3/4" black pipe or equivalent. For adequate gas supply, run 1" gas line to within 10' of tankless. Look at specs in product manual. Why so much gas? Tankless consume more gas to heat one gallon of water as water rushes past in pipe, making it hard to believe endless hot water will save money vrs tank-type heater. Do not use flexible gas line. Flexible gas line works with ordinary tank-type water heater, but tankless can shut down or issue error codes if gas flow is restricted by flex line. Error code 11 or C11 can be associated with undersized gas line, and using flex line. To prevent problems, replace flexible line with 3/4" black pipe. Do not use copper pipe unless local codes allow, and then use only approved pipe that is non-reactive with local gas supply. Use yellow teflon tape, or approved sealant. Do not let excess teflon tape or sealant enter pipe. Keep pipe connections clean. Install sediment trap in gas line to keep water and other debris from reaching gas valve inside tankless. Sediment trap is usually a 3" long piece of pipe pointed downwards with a cap on the end. Check gas pressure. Make sure gas meter is large enough to support all the gas appliances connected to meter. If tankless consumes more gas than meter can supply, it will starve other appliances, and cause shut down of oven, stove, furnace and tankless etc. |
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No
Service Manuals? |
NO service
manuals ????? Gas appliances are dangerous, BUT... wait ... How do service technicians know how to fix your tankless if there are no service manuals? By guessing? How do qualified service technicians exchange information with each other and with customers if only certain people have repair information? How do young people get enthusiastic about a field 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 Maintain water heater 2012/ pdf Whoops, Liam sent 2008 Rheem Tankless service manual !! Rheem Ruud tankless service manual 2008 Rheem tankless service manual/ possible 2011 He said he contacted Waiwela General guideline: Probably won't apply to your tankless unit |
Get your China Dang buddy, Buy tank-type gas water heater made in Americas. And save money to buy toxic Chinese dog food. |
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Bosch
tankless company
posts service bulletins. But
Rheem doesn't. Bosch posted a bulletin how to remove and clean the burner. Why isn't the American company as good as the German company? How to remove and clean tankless water heater burner How to replace tankless gas valve This is probably how Rheem tankless technicians learn how to work on Rheem products. More Bosch service bulletins Bosch support center OK.... Mat just sent me an old Rheem service bulletin. Thanks Mat. Removal and cleaning Rheem Tankless burner |
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Service resources: AO Smith tankless service handbook AO Smith general troubleshoot guide/ pdf Example American tankless service manual Rinnai tankless troubleshoot manual Typical Rheem SERVICE MANUAL & part replacement/ pdf Typical SERVICE MANUAL & part replacement/ pdf Removing and cleaning tankless burner Remove and clean burner 2 |
I can fix it this weekend |
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I can fix it TODAY ?? |
Fix
tankless yourself Same day !!! Install tank-type gas water heater from local box store. How to install tank-type gas water heater Which is best gas water heater Or test parts, then order some parts online and see if it works. Go without hot water until service technician can figure out problem. Some problems cannot be solved. Following manual applies to older tankless. Rheem Ruud tankless service manual 2008 |
Take aim, and
replace the
whole thing. |
Checklist to
see if you are right for tankless Calipers at Amazon Test, measurement and inspection supplies for professionals |
All
costs are energy Typical family of 4 saves $1-$8 per month using tankless. Factor in maintenance, possibility of expensive repair, no service manuals, no local service techs, cost of parts, cost of replacement, limited warranty, no warranty if you install yourself .... and that $100 per year savings looks like thin ice. Better think it over Hoover. Checklist to see if household suited for tankless/pdf Class action lawsuit against Rheem tankless? Don't get Rheemed: Avoid WT (wallet thickness) error/ pdf If wallet is more than 2" thick, then you are approved for tankless. Buy one lol: Tankless water heaters at Amazon |
If Lincoln was alive today, would he be anti-business. ... since plantations, slave-trade and payday loan operations are business. |
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 Error code 1L is 'lime build-up" Delime tankless yearly Clear error IL |
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Tankless When desired temperature setting is higher, less water can be heated. Cold winter temperatures affect amount of hot the tankless can produce. Larger, more detailed image |
High
temperature limit Paradox: Why do liberals conserve resources, and conservatives dance and sing and waste everything? Does the claim of 'endless hot water' and saving money sound too good to be true? It is. Tankless consume more gas to heat 1 gallon of water than storage tank heater. Especially in winter when incoming water is colder. As a result, there is a temperature limit to tankless based on amount of water passing through burner, incoming water temperature, and thermostat setting. Of course tank-type heaters have a limit too, based on strength of tank and pipes, but the limit is higher than tankless for ordinary residential models. When you turn up temperature on tankless, it cannot keep heating same volume of water. Water flow must decrease or tankless will shut down. Remember the tankless is already consuming as much gas as possible, evidenced by the large gas line and vent. So while tank-type heater can be set to 150 degrees, even if that temperature is extremely dangerous, the high temperature limit for tankless is closer to 120 degrees. Typical bath is 110° F and rarely higher. You can preheat cold incoming water using a tempering tank Resource: Add a tempering tank |
140°F
needed to kill bacteria on wash day
Tankless default is 120°F with remote control, 100°F without remote Tankless cannot deliver 140° temperatures Read about 140° temperatures on tank-type heater |
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High
altitude over 3280 feet above sea level High altitude: \ Less oxygen to support combustion. Equipment runs hotter. Uses more gas. Water heater must be rated for altitude, or have dip switch adjustment High altitude dip switch setting Adjust for altitude 2008 service manual pg 13-14 Altitude program chip part numbers/ pdf |
Tankless are not made in your
town. Well nothing is,
because you spend your money watching TV and paying for a cell phone,
which never fixed a road or built a bridge, but is required to keep the
economy running so a guy from another country can manufacture your
tankless and cell phone, and travel all the way here to fix your road
and then get deported.
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Probably made in Switzerland, or Cayman islands, or Wyoming... no
wonder our military protects those areas at your expense, while the
rich guys pay no tax. Or Buy whole new tank-type gas water heater How-to-install-gas-water-heater.html |
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Buy one since it's advertised here... makes sense: Tankless water heaters at Amazon |
Research
shows
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 local
store. Reality Check: With tankless, you are connecting 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 each have plenty of problems without a computer Pro-n-con tankless How to wire Tankless electric |
Installed it yourself ? Amazing Changed the dip switches? Took it apart and fixed it? Gas appliances are dangerous and subject to local and national safety codes. Protect yourself. Do NOT store flammables near tankless, or in same room. This is clear fire hazard. Read product manual. Follow installation requirements, safety advisories, and perform required maintenance. Provide adequate air supply, and proper venting, and do not expose to flammable vapors. Improper installation and lack of maintenance will cause error codes. If you smell gas, leave building immediately and call gas company. Gas water heater with dirty combustion parts can leave unburned gas... the explosive gas can travel up hot flue pipe. Whoomph. Do not install propane appliances below grade (basement) With propane gas, the gas is heavy and will fill tankless burner, or fall out onto the floor, or fill basement. Install gas detector at correct height for type of gas. Bradford White venting .pdf |
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Remove flammables away from tankless Be cautious Explosion inside home wastes precious fuel, and might burn down neighbor's garage. Buy: Gas safety cans at Amazon |
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Installed behind furnace to save space!!! Atta boy. How you going to delime it every year? |
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Don't
fix it yourself. Support the economy: Hire technician to perform yearly tankless maintenance. Do your part to support our ecomical situation. Check your area has has qualified service technicians before buying tankless Or easily install tank-type heater yourself: How to install tank-type gas water heater today Buy a tankless (for the aggravation of it all): Tankless water heaters at Amazon Tankless water heaters at Amazon |
Support
the economy: Buy water heaters from my associate links: 50 gallon Gas water heaters at Amazon 40 gallon gas water heaters at Amazon 50 gallon Electric water heaters at Amazon 40 gallon electric water heaters at Amazon Hybrid / heat pump/ water heaters at Amazon Resources: How to install gas water heater How to install electric water heater Troubleshoot gas water heater Troubleshoot electric water heater Point of use water heaters |
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Industrial electric at Amazon Industrial supplies at Amazon Industrial and scientific Amazon |
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DEWALT Black and Decker Stanley SKIL Makita Porter-Cable Bosch Irwin Hand tools Klein hand tools Fluke electrical testing Dremel hobby tools Campbell Hausfeld air poweredbr> Tekton automotive Powerbuilt automotive Saws and saw blades |
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Compare
box timers Control water heater w/ Z-wave |
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Control centers: + manuals and parts All control centers and parts Including Z-wave |
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Resource: Compare programmable timers Compare countdown timers Off delay On delay Twin timer Modules Din rail Woods Control water heater |
Buy
from my affiliate links every time/ thanks: Amazon As an Amazon Associate I earn from qualifying purchases Enter Amazon from any link on my site, fill cart with any item ... purchases pay small commission E-mail: geno03245w@gmail.com My response might end up in spam folder, check email folders Waterheatertimer on Twitter Message thru facebook |