Turn off power to heater for about 5 seconds, and turn back on. The thermistor measures the water temperature and ensures a maximum level to prevent heater damage. There might also be damages to the suction air leaks. Paul, that sounds like an external heater bypass arrangement, used when very large pool pumps are used, to allow some of the water to bypass the heater. Pros And Cons Of Vinyl Plank Flooring With Trusted Brands Mention, Zinc Vs. Copper Roof Strips: Key Features With Pros And Cons of Each. Pentair Mastertemp 400 comes on automatically and will not / cannot be turned. The burner is located in the center of the combustion chamber, wrapped by the circular copper heat exchanger tubes. Worked for 1 weekend, now won't fire up. Make sure all the valves are opened and in good working conditions. Replace the bad board. 36. Replace the defective one. The heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. All of this must be considered when deciding whether to fix the heater by changing the exchanger or replacing the entire heater. They have a have an SF code for Sensor Failure. But heat exchangers are expensive. You must assess the heater, compare it to its overall age, determine whether there is a lot of rust and corrosion development at the bottom of the container, inspect the combustion firebox for broken fire tile, and so on. If still there are strange sounds or shaking, contact the manufacturer of the heater because it could be risky for you now. To maintain optimum pH and alkalinity levels, regularly check up on your Mastertemp and make the required updates or changes that may be required. Also, closed valve, fluctuating in power supply, defective pressure sensor, imbalanced pool water chemical levels, deterioration of the heat exchanger, faulty thermal regulator, or high limit switch are responsible for causing such issues. They can cost you up to 50% of a new heater. Along with that, check the water flow to the heater. Replace the defective parts. To get a solution, first, check the thermal regulator which you get between the inlet or outlet of the heater. Adding MA is a normal and expected process to help keep it in check. Thanks for the help. The reason is simple: TFPC (Trouble Free Pool Care) is a methodology, not a product that you must purchase. Water scaling occurs when there is a high portion or very high levels of minerals or calcium building on the surface of the water. Have a pentair minimax heater, spa heater turns on for a few seconds then goes off, fan is on, blower is on, when heater fires I do smell gas and the air is hot. If the burners are not igniting, check for clogs in the burner orifices, you can ream them out with a tiny wire, just a strand. For that, clean out the gas orifice and burner system. "dateModified": "1/8/2019",
The Pentair MasterTemp common problems include- ignition failure, temperature problems, heater keeps shutting off, display not working and the heater not turning on. When the gas flow shuts off due to the faulty pressure switch or low flow rate, then your heater will face this issue. Otherwise, the igniter is bad and you need to replace it. It may not display this or other websites correctly. The same is true for the StaRite Maxetherm heaters. I have a Pentair 400 mastertemp propane spa heater. Are you experiencing issues with your Pentair pool heater? Manuals; Brands; Pentair Manuals; Swimming Pool Heater; MasterTemp 400; . An HVAC company would install it as well, or an Appliance company. ET Monday through Friday, or online at www.pentair.com and click on Products, then Pool . 35. Pentair MasterTemp 400 Common Problems [15 Easy Fixes]. Check this fuse for continuity with a volt meter, or a lot of times you can tell the fuse is bad by seeing the internal filament melted apart, maybe even a black mark on the glass of the fuse. The leak can be verified by you, if you lift the lid and inspect inside. Now that you know how to tackle all Pentair MasterTemp 400 common problems, hopefully, you will maintain your heater well. You can clean your own pool filter easily. To Turn off Gas to Appliance. Ensure that the burner flame holder is grounded properly. Now, check out the voltage supply to the control board. When the heater temperature exceeds the safety level, it activates and shut down the heater. Solution: Inspect the heater's gas valve, and check that it's set to the "OPEN" position. http://www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf Page 37. "@type": "ImageObject",
I designed my home myself with the help of my beloved wife. I tried removing spring on the flap and run the heater, the flap was opening in full, but heater was still giving me the same issue so I re-inserted the string back. you won't get any ignition in your heater. Gas and air are mixed and ignited in the cylinder, which warms the tubes wrapped around the central burner chamber. If not, replace it. $4100 is not cheap. Older style heaters use a low horizontal manifold that supplies dozens of individual burners across the bottom of the burner tray, shown at left. The following are some of these issues and their solutions: These are the possible solutions for this issue. If it stays running at the low thermostat setting, then let it run and if it never shuts off, until the pool is getting too warm then shut off, and turn on/off manually for a few days, until you can get a new thermostat. Ensure the correct temperature of the thermostat. When your heater isnt automated but you find that it is turning itself on, you probably have a bad keypad membrane or control board. Heat exchangers can corrode due to pinhole leaks on copper tubes, saltwater, lack of alkalinity, and low pH levels. First, power cycle the heater to erase all the unwanted factors. Clean the skimmer or the strainer basket of the pump. It doesnt sound like the heater is even trying to kick on. Otherwise, your control board is most likely to be blamed. Finally, set the thermostat temperature correctly. Now, measure the voltage reading on the water pressure switch. This problem can be resolved by servicing the pump or filter. Description: 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. Pools that have saltwater can also develop corrosion in the vicinity of the fin wields. 4. When the heater tries but fails to start, it recycles. Check the wire going to the sensor and the sensor itself. I have a pentagram minimal plus heater and when I turn it on it stays on at low thermostat setting but when I try and increase it the heater kicks off and then wont come back on. Inspect the blower and clean out the stuck debris of the element. Its a fun combination of plumbing, wiring and gas. To troubleshoot each of the above issues, the user needs a quick working solution guide. Check out the pressure sensor, thermal regulator, or high limit switch. Adjust the chemical level of the pool water. Sometimes the heat exchangers leak. Search. View online or download Pentair MasterTemp 400 Brochure. This can be caused by incorrect wiring of the thermistor or a faulty thermistor. Replace it if you find no voltage there. Ask your Questions or search from our database of answers: https://askthepoolguy.com/questions/ask/ Make sure you Subscribe so you get your answer! },
Check for wet or damaged igniter with low resistance to ground. Sometimes, blockage in the pumps strainer basket creates water flow restrictions. I sent the following on May 23, but received no reply/advice. The possibility of water chemistry issues like calcium buildup in the heat exchanger, low water flow, and faulty pressure switch can create strange sounds in your heater.To solve this sound issue, check through the below solutions. Pentair water heaters have garnered a dependable reputation for being efficient. Tech did everything but change the Regulator. Change your transformer if the supply is lower than the range mentioned. This should not be a cause for concern, though. Dont stress! Voltage checks have the potential for a lot of danger. Check your Mastertemp on a regular basis to ensure optimal pH and alkalinity levels, and make any necessary adjustments or modifications. "datePublished": "1/8/2019",
Any ideas on what the problem could be? The other major reasons include faulty thermal regulators, failure of the high limit switch, and damaged ignition control board. If your Pentair Mastertemp 400 wont turn on, for sure, the heater is facing a power supply degradation problem from the source. Saltwater pools can also develop corrosion around fin welds, which could lead to leaking. No code is present. Other major reasons include: . I replaced the thermistor and still have the same problem. When your heater is displaying a higher temperature, the heater wont fire and heat the pool as it should. Traveler, food lover, interior designer, and blogger. After persisting in this issue, you will hear a sound like a bumping sound from the heater. Ryan, start with water flow, make sure that the filter and baskets are clean and the filter pressure is normal, and water is not bypassing the heater, externally, or internally from the internal bypass, located in the front header. After about 20 more seconds the heater light goes out . . The MasterTemp has a max setting of 104. So you could save $1000 by buying online and having a company install. I had to turn off . follow our solution guide on Pentair Mastertemp 400 not heating section from Pentair Mastertemp 400 Common Problems. You will need to reset your heater to get it out of the lockout. 2. Email Us. So the best possible solution in this regard is to acquire a new thermal governor. Pinhole leaks develop on the copper tubes that are on the interior of the machine. Worked for 1 weekend, now won't fire up. Also, check out the bypass valve and replace if it is stuck open. Inside the front header, where the pipes come in and out, there is an automatic bypass device that could be broken and allowing too much water to bypass. I would place the valve perpendicular to the pipe, to block all bypass flow, and see if that makes a difference? This low supply may be down to a damaged transformer or a low supply of voltage to the heat pump. Not sure why a pool tech wouldn't replace the 2 wire remote . I let it run and the temp slowly went up from 74 to 77 in just an hour without stopping. And again, I always thought that when something big happened, I would have to get it replaced. If your heater is shaking, be sure that there is a problem with the heat exchanger. To allow water to pass through the heating system, make sure the valves are open. Solution: The solution to this problem is actually very simple and easy. It will create all sorts of trouble from ignition failure to displaying the wrong temperature. You need to replace the corroded or damaged regulator. When the amount of scaling is very low, it might often be beneficial. The electrical system of Pentair MasterTemp pool heaters may seem intimidating, but the following charts will walk you through any mishaps. 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