How to troubleshoot a Pentair mastertemp pool heater?

Our Pentair Mastertemp Troubleshooting Guide starts with the error codes shared by both models, and follows into a 6 page flowchart to step by step troubleshoot a Pentair or Sta-Rite pool heater, and get it firing again fast! The burners on this type of MasterTemp/Max-e-Therm heater are quite unique from previous generation pool heaters.

Is the mastertemp pool heater the same as the Max-E therm?

The controls and circuit boards for the Max-E-Therm and the MasterTemp are fairly identical. Even the new MasterTemp aboveground pool heater has the same design, and the same troubleshooting procedure. The error codes below can get you started with understanding what your heater is trying to tell you.

What’s the code for the Pentair pool heater?

Pentair 125 pool heater 128 r14 code . It starts up and will run for a few minutes then shut down and service heater light comes on and nothing will work on control panel, when I unplug and restart it does the same thing Pentair Pool &… • Answered on

What’s the difference between a Pentair and Sta-Rite pool heater?

Just another way that Sta-Rite built a radically different heater. A completely redesigned pool heater that allows the Pentair MasterTemp and Sta-Rite Max-e-Therm heaters to be over 50% smaller in size and footprint. I sincerely hope that this post has helped you solve your pool heater problem!

When to turn off Pentair mastertemp 250 service heater?

Always make sure that the heater is off at least 10 minutes before the pump shuts off. Heat trapped in the heater increases the risk of scale. If you want a less aggressive chemistry towards copper I would suggest either using CLR or Lime-Away.

Why is my Pentair Master temp heater reading the wrong temperature?

If the sensor has failed and is reading the wrong temperature, it will cause the same issue you’re experiencing. The part number you’d need is NNN-NN-NNNN and they only run around fifty dollars or so and are pretty easy to change yourself if that’s something you want to do.

What’s the temp on my Pentair pool heater?

My display on my pentair master temp heater is reading my pool temperature at 107 degrees and therefore it does not allow my heater to kick on. The actual temperature is about 80 degrees. There are no service lights on.

What’s the part number for a Pentair Master heater?

The part number you’d need is NNN-NN-NNNN and they only run around fifty dollars or so and are pretty easy to change yourself if that’s something you want to do.

What kind of pool heater does Pentair use?

Is the Pentair minimax pool heater still made?

The MiniMax pool heater design is no longer being made by Pentair, but parts will continue to be manufactured for years to come, so fear not if you have a Pentair Minimax, which shares a common gas pool heater design with other brands like Hayward and Raypak.

What are the features of the mastertemp 125 heater?

The MasterTemp 125 Heater provides energy-savings and advanced operating features that were only available from much larger heaters. With its revolutionary pre-mixed gas combustion technology, the MasterTemp 125 Heater offers 82% thermal efficiency, the highest in its class.

What kind of controller does mastertemp heater use?

The MasterTemp heater also comes equipped with the Pentair multifunction temperature controller which shows, at a glance, the proper functioning of the heater. All MasterTemp heaters are designed with a direct ignition device, HSI (hot-surface ignition), which eliminates the need for a standing pilot.

Is the Pentair Max E therm still in production?

The Max-E-Therm is still in production under the Sta-Rite name. Pentair has a regular residential mode MasterTemp heater and a commercial ASME certified performance model MasterTemp heater.

What is the fireman’s switch on a Pentair mastertemp heater?

The “Fireman’s Switch” is a poor name for the 2 wire 24 volt AC remote control system of the heater. The Fireman’s Switch is a 2 wire control that can connect to automation such as the EasyTouch or IntelliCenter or to a timer. The current is less than 500 milliamps (0.5 amps).

What is the error code on the Pentair pool heater?

Pentair swimming pool heater with error code r-13.

How does a Pentair pool heater turn on?

Upon powering up, I have a pentair pool heater 250 nt tsi nh. Upon powering up, it will turn on the blower and ignite, then shut off. The blower vent is warm for a few seconds and then cool air is emitted.

Where is the flame holder on a mastertemp pool heater?

The Burner System of the MasterTemp/Max-e-Therm heaters is one single burner, called the Flame Holder, shown right. The burner is located in the center of the combustion chamber, wrapped by the circular copper heat exchanger tubes.

Can a stacked exchanger pool heater be troubleshooted?

Troubleshooting the stacked exchanger type of heater is not much different than other electronic or digital pool heaters. The controls and circuit boards for the Max-E-Therm and the MasterTemp are fairly identical.

What are the error codes on the Pentair pool heater?

PENTAIR MASTERTEMP ERROR CODES CODE MEANING SFS STACK FLUE SENSOR E01 TEMPERATURE SENSOR E02 HIGH LIMIT SENSOR E03 THERMAL FUSE ERROR

What does error code E01 mean on mastertemp 400?

MasterTemp 400 heater, when started, heats water for about two minutes, then shuts off and Service Heater light comes on with error code E01. On the circuit board, LED11 & J5 Temp-Fault lights are lit red. Thermistor was recently replaced. E01 is an indication that something is wrong with the temperature circuit.

Is the Pentair mastertemp 400 too much to run?

That is currently one of the most powerful residential heater ratings. The higher the rating the quicker your pool is heated up. With this 400 000 btu rated heater you can expect on average a 2 degrees F per hour rise in the temperature of your pool. Does It Cost Too Much To Run? You can check your State just above for average running costs.

When did the Pentair mastertemp pool heater come out?

Pentair pool heaters come from the legacy of the Purex-Triton Minimax heater, when Pentair purchased the Purex company. In 2004, Pentair acquired the Sta-Rite company and it’s Max-E-Therm heater technology. The Pentair MasterTemp pool heater adopted the sealed combustion chamber with controlled exhaust design.

Is there a warranty on a Pentair pool heater?

For warranty information please visit Pentair Water Pool and Spa StaRite and Mastertemp pool heaters manufactured between December 22, 2020 and January 6, 2021 recall. 4.7 out of 5 stars.

When did mastertemp high performance pool heater come out?

Pentair Water Pool and Spa StaRite and Mastertemp pool heaters manufactured between December 22, 2020 and January 6, 2021 recall. 4.7 out of 5 stars. Read reviews for MasterTemp High Performance Pool Heater This action will navigate to reviews. 5 out of 5 stars. I love installing mastertemps.

Where are the burners on a Pentair pool heater?

Older style heaters use a low horizontal manifold supplying dozens of individual burners across the bottom of the burner tray, shown at left. The Burner System of the MasterTemp/Max-e-Therm heaters is one single burner, called the Flame Holder, shown right.

Which is the best Pentair pool heater to buy?

I’m very happy with my upgrade to a new Pentair Master Temp 400k BTU Heater. The performance is excellent. Operating is quite and heats up my pool or spa in about half the time. Uses a 1/3 less energy ( natural gas) and has a smaller footprint.

What makes a Pentair pool heater heat up?

The air space above the burners heats up, which heats the copper finned tubes laying on the top of the combustion box. The water circulating through the copper heat exchanger tubes absorbs the heat, and exits the heater a few degrees warmer than when it entered.

How to get replacement pool parts from Pentair?

Click here for instructions. We’re here to help with any of your product inquiries. Learn about our program designed especially for pool professionals. Loading…

When to replace a Pentair membrane switch mastertemp?

Replaced Pentair unit that came with heater, 3 years old. Purchased another Pentair 42002-0029Z Jan 2, 2019, unit failed, membrane switches full of water and traces corroded and touching the metal spring pads, making contact continuously. Replaced with this Pentair 472610Z June 21, 2019.

What kind of blower does a Pentair mastertemp pool use?

This combustion air blower kit is designed to use with Pentair MasterTemp pool and spa natural gas heater model 400NA and also compatible with Pentair Sta-Rite Max-E-Therm pool and spa natural gas heater model 400NA. It includes single volt blower adapter. Measures 12-inch length by 12-inch width by 12-inch height.

Is the mastertemp 125 high performance heater flammable?

MASTERTEMP 125 HIGH PERFORMANCE HEATER INSTALLATION AND USER’S GUIDE MASTERTEMP 125 DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or other appliances. FOR YOUR SAFETY Improper installation, adjustment, alteration, service or maintenance can cause propertydamage, personal injury or death.

How old is the air blower on my Pentair pool?

Heater works like a charm now. I have a STA-RITE SR-400 NA natural gas spa & pool heater that is 6-7 years old, but used only a few times. This air blower kit and the gas control valve failed and had to be replaced to get the heater going again. The air blower appears to be a weak link in Pentair pool heaters.

Which is the highest temperature in Pentair mastertemp 400?

Normal boot up is 888, 128 and then r8 or r13. The numbers are displayed briefly and then go to water temperature. I think that 126 is the highest temperature indicting a thermistor error. OP, can you describe the startup display? Can you measure the resistance of the thermistor? What was the part number of the new thermistor?

The Max-E-Therm is still in production under the Sta-Rite name. Pentair has a regular residential mode MasterTemp heater and a commercial ASME certified performance model MasterTemp heater.

What kind of exchanger does Pentair mastertemp ASME have?

Both the MasterTemp and MasterTemp ASME come in an HD model that has a cupro-nickel exchanger. Pentair claims the cupro-nickel exchanger stands up to the harshest of applications, like low pH, high flow or heavy use.

Where is the burner on a Pentair pool?

The burner is located in the center of the combustion chamber, wrapped by the circular copper heat exchanger tubes. The single glowing burner is aided by the blower fan, which regulates the correct amount of exhaust and is plays a large role in correct combustion.

What is the error code for Pentair maximum temp 400?

Pentair Maximum Temp 400 – error code E05…occurs repeatedly after 8 mins…tried to hold down the pool button to reveal more info…after 20 secs nothing but E05…Service Heater light is lit…checked the wires – good condition…cleaned the contacts albeit they did not appear to need it…no change…pls advise…merely replace the sensor or…

Why is my Pentair pool heater showing E05?

I was called out to look at a Pentair MasterTemp 400 pool heater in Newport Beach today. After running for about 15 minutes, the display showed E05. Diagnostics registered stack flu sensor error.

Why is my pool heater not turning on?

Solution: If your pool heat pump isn’t receiving the power it needs from the breaker, then it won’t power on at all. But if the heat pump was previously working and no longer turns on, a damaged electrical connection could be the problem.

What should I do if my pool heater wont turn on?

If possible, replace the motor with a larger one. Close water features, or alternate them, until the pool heats to the desired temperature. The purpose of the pressure switch is to ensure that water is flowing through the unit before it allows the heater to turn on.

What should I do if my pool pump does not turn on?

If your pump does turn on, but loses power, it could be overheating. Try running the pump during the night to avoid overheating. If this does not work, check the bottom vents of the motor to make sure there is nothing inhibiting the fan. If the problem persists, you’ll have to replace the pool motor or pool pump.

Can you add a gas pool heater from Pentair?

You can when you add a gas pool heater from Pentair! With so many gas heaters to choose from, you’re sure to find the perfect one for your pool or spa. Designed to efficiently heat any size pool or spa, a Pentair gas pool heater will have your warm the water to your desired temperature in a hurry.

How long does it take to heat a Pentair 400K?

With a Pentair 400k you are probably going to get an approximate 2 degree per hour temperature rise in a medium sized pool. When starting your swimming season it will take about 2 days to heat a full pool if it’s cold.

What causes a Pentair pool heater to turn off?

Have Pentair MasterTemp 400 pool heater. Starts but turns off in a few minutes. Start up code 888 then 128 then r=8, product # 460736 A dirty filter can cause low pressure and as a result, cause the heater’s pressure switch to turn OFF.

How to repair your Pentair pool and spa?

Check the power cord for damaged wires. Check for a faulty breaker. Check power going up to the unit…If power stays on up to the unit then you have a short inside the unit someplace. Pentair Pool &…

Is the service heater light on on my Pentair pool?

Pentair pool heater troubleshooting: service heater light is on! My pentair heater has a red “service heater” light on and the error code r13 appears when it starts up. It’s not running.

What is the phone number for Pentair technical support?

Pentair Technical Support: 800-831-7133 WARNING RISK OF ELECTRICAL SHOCK OR ELECTROCUTION. Improperly installation will create an electrical hazard which could result in death or serious injury to pool users, installers, or others due to electrical shock, and may also cause damage to property.

When does the service light come on on a Pentair pool heater?

Newbie here hoping to find some assistance. I have a Pentair Mastertemp 250 pool heater. When the heater is turned on, after a variable amount of time the service heater light comes on. It is almost always within the first 10 minutes of operation.

How old is the Pentair Master temp heater?

Bachelor’s of Science Pentair master temp heater less than 2 years old working Pentair master temp heater less than 2 years old working fine then service light came on called warranty claims and pentair sent tech out who only tested water and then said our chemicals were off – h… read more

What’s the error code on my Pentair pool heater?

Got an r13 128 error code on Pentair MasterTemp 400 Natural Got an r13 128 error code on Pentair MasterTemp 400 Natural gas pool heater. Gas valve opens (I smell gas) but fails to fire Scott. Hula Pools.(###) ###-####…

Are there any recalls on Pentair pool heaters?

This recall involves Pentair Water Pool and Spa StaRite and Mastertemp pool heaters sold in various styles and models with manufacturing dates between December 22, 2020 and January 6, 2021. The manufacturing date, along with model number, can be found on the serial number sticker on the heater. Recalled Pool Heater Model Numbers

How to contact Pentair water pool and spa?

Pentair Water Pool and Spa at 800-831-7133 from 8 a.m. to 7:30 p.m. ET Monday through Friday, or online at and click on Products, then Pool and Spa Equipment, then Pool Heaters, then Additional Resources for more information

For warranty information please visit Pentair Water Pool and Spa StaRite and Mastertemp pool heaters manufactured between December 22, 2020 and January 6, 2021 recall. 4.7 out of 5 stars.

Is the Pentair mastertemp pool heater air or gas?

The Pentair MasterTemp 250K Natural Gas Pool Heater brings you quiet, efficient heating for your pool and spa. Very compact design for such a high performance heater allows for smaller overall equipment pads that won’t intrude on your poolscape. A fully pre-mixed system with a highly efficient air and gas mixture lets MasterTemp heat up fast.

How big is a mastertemp 400 pool heater?

specifications Item # Description Item # 460735 Description MasterTemp 300 Item # 460736 Description MasterTemp 400 Item # 460737 Description MasterTemp 400 Item # 460805 Description MasterTemp 400HD

What causes a Pentair mastertemp 400 error code E05?

I see more E05 errors that are due to things like a sooted exchanger (fuel delivery, venting), scaled up exchanger (water side), or a low water flow. I see those problems a lot more than a sensor that has gone bad. I could even buy that continued high temps could eventually cause a SFS to fail.

Why does my Pentair pool heater say E05?

Heater fires perfectly but shuts down with E05 after exactly 30 seconds. Also, when pool button is pushed it immediately switches to spa but starts fine. My heater is a little over 1 year old. Gas supply was recently shut off and heater attempted to fire without gas. Not sure if it is related.

Why does my Pentair pool heater keep leaking?

Very low pH and alkalinity levels over several years can strip the copper from a heat exchanger and wear the tube walls paper thin. Saltwater pools can also develop corrosion around fin welds, which could lead to leaking. Cupro Nickel heat exchangers can be used for much greater resistance to the effects of salt water corrosion.

What kind of gas does a mastertemp pool heater use?

Models Natural Propane 125K BTU/HR (without cord) 461058 461060 125K BTU/HR (with cord) 461059 461061 120/240 VAC NATURAL GAS/LP GAS INSTALLATION AND USER’S GUIDE HIGH PERFORMANCE HEATER MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide Rev.

Is the Pentair mastertemp propane gas heater compact?

It is so compact that installation by a pool pro is quick- saving you time and money. The rotating digital display is information-rich, convenient for any installation orientation and makes programming and monitoring a cinch.