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How do I remove a Heat Exchanger on a Rheem Model # RRKA-A042JK10E

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Goodman furnace model #GPO 125_4 REV 8 Installed 6/2/2002

Have you measured the temperature in the suppy plenum? Should be 140 to 160 max. If hotter, you have a blockage in the ductwork or vents closed. If within spec, bad circuit board.

Posted on Jun 10, 2008

  • 19 Answers

SOURCE: do i remove heat exchanger from top on GMC model

unfortunately through the front by removing gas valves and controls

Posted on Dec 11, 2009

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1 Answer

How to clean inside Coils for Rheem model # RRKA-A036JK08E

There is a product called "Coil Brite" That is designed to clean coils. It is a spray on liquid that will dissolve the crud built up on the coils.

Aug 27, 2014 | Heating & Cooling

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Where is the heat exchange in a rheem pool heater located ?

The PVC plumbing is hooked into the front header, the front header is attached to the heat exchanger. The heat exchanger looks like copper finned tubes with a steel plate on each end. You need to disassemble heater working from top down to get to the exchanger. A skilled tech can replace an exchanger in under one hour service call.

Aug 19, 2014 | Rheem 266K to 399K BTU Swimming Pool...

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How do I flush this unit

1) Copy following link for steps showing how to run white vinegar through Rheem tanklessx heat exchanger to partially remove scale that coats heat exchanger and reduces unit efficiency and causes error code IL:

2) Tankless are prone to scale inside heat exchanger and require yearly deliming to mitigate effects. Do the required yearly maintenance to avoid common error codes.

3) Expected cost of maintenance and repair is more expensive than estimated $1-8 monthly energy-bill savings from owning tankless.

Dec 31, 2012 | Rheem EcoSense by 7.4 GPM Tankless Water...

1 Answer

Error c4-15 what does that mean

Before calling service technician, copy following link for troubleshoot resources:

C4 can range from failed PC Board to lime build-up inside heat exchanger
Error 15 is 'heat exchanger is too hot', clogged heat exchanger, restriction in cold water inlet, temperature set point too high.
If you recently changed temperature setting, then that might be cause.
Tankless require monthy-to-yearly maintenance to avoid common error codes.
Delime tankless and clean water filter, keep temperature low.
Never install tankless water heater is best way to avoid complications of expensive water heater that is maintenance heavy, hard to diagnose, expensive to fix, etc.
Never expose tankless to more than 11 grains hard water.

Aug 26, 2012 | Rheem Tankless Hot Water Heater...

1 Answer

Rheem over heat limiter

The OHL is not for sale due to a couple of reasons. If the heat exchanger has a hot spot it will melt the OHL making it useless. The OHL is just a large fuse. Rheem will completely warranty (if within date range) if the OHL or heat exchanger has problems. Bypassing the OHL is very dangerous and could result in a house fire since the appliance is mounted to a wall. I would suggest scrapping the copper heat exchanger for cash. That about all its worth in the condition its in.

Jan 31, 2012 | Rheem RTG-66DVN Direct Vent Natural Gas

1 Answer

Code 14 comes up on the remote what does that mean

Before calling Rheem or service technician, open following link for troubleshoot resources including error codes, Rheem chat, typical required maintenance manual, and possible product manual:

Error codes are start point for troubleshoot.
Error 14 is 'overheat wrap fault.'
This can include venting problem, failed heat exchanger, bad safety circuit, gas problem.
Rheem does not have a service manual posted for this specific problem.

Additional information: Tankless water heaters consume large amounts of gas during combustion. The combustion burns away hydrogen and the remaining poisonous byproduct is vented into the atmosphere at each home day and night.
Byproduct includes acidic water vapor that condenses along the vent pipe and drips back down vent.
Each tankless vent pipe has a drain line that directs acidic water into household drain.
If this drain line becomes clogged, or if vent was not installed correctly, then water drips down into heat exchanger and can erode or crack exchanger.
The typical maintenance manual above shows steps that can solve many tankless problems before they happen.

Sep 11, 2011 | Rheem Water Heaters

1 Answer


sounds like you have a bad thermal governor (regulates water temp inside the heat exchanger) or your pH has been to high and your exchanger is completely scaled up.

Aug 17, 2011 | Rheem 266K to 399K BTU Swimming Pool...

1 Answer

Where are the air filters on a Rheem Model # RRKA-AO36J10E

Hello Try inside the hallway or in the large intake vent.If not try the blower unit itself in the attic or basement.

Sep 09, 2010 | Heating & Cooling

1 Answer

I have a RUUD heating and air unit, Model number rrka-a042jk10e. This connected to a propane tank, we had ran out of gas and now it is refilled but now the piolt will not light. Is there a reset button

Thanks for your Question,
you will need to bleed the line, as you have air in the lines, once you bleed the line it might take a few trys to get it lit again, but keep trying, it should light, one other thing you may want to do as well after you bleed the line, go to the breaker panel and shut the power off to the furnace, wait about thirty seconds then turn the power back on, that resets the circuit board, then try lighting it, let us know how it went, thanks again,

Jan 26, 2009 | Heating & Cooling

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