Learn more, Facebook II Twitter II Pinterest II Linkedin. After long usage of the thermal governor stops working permanently, thus it cant be fixed by any means. Hello. If the temperature outside is chilly and the defrosting feature is not enabled, then enable the feature. The flame ignitor is firing but no gas flow. Solution. Is there a bypass valve open? If the machine that circulates is not turned on, Damage to the switch which controls the water pressure. Take a closer look at where the water originates. . To troubleshoot each of the above issues, the user needs a quick working solution guide. },
2. A pool technician replaced 3 sensors however it still does not work. Might charge under $500 to install. Thank you! I just didnt trust them anymore. Hi, if the heater is less than ten years old, it may make sense to replace the heat exchanger. Rust or red spiders can clog these up. "mainEntityOfPage": "https://blog.intheswim.com/pentair-pool-heater-troubleshooting-guide/",
I suspect it could be the safety shutoff, thermal cutoff or Hi-limit switch interrupting the heating cycle. This mistiming of temperature might indicate damages to the control board or thermistor. Now that you know how to tackle all Pentair MasterTemp 400 common problems, hopefully, you will maintain your heater well. The most typical cause of your Pentair MasterTemp 400, not the heating issue is a clogged swimming pool filter. Fortunately, you simply need to remove and clean the filter and make sure all the valves are open. This is a very rewarding learning experience for me. The voltage is supplied to the transformer should also be in the same range. How do you test a Pentair stack flue sensor? 38. Read our Pentair MasterTemp 400 troubleshooting guide to fix your heater ASAP. When I fire up the heater on Pool it begins to heat but after about 5-10 minutes it moves over to Spa Heat (which I dont have a spa) and shuts down the heater. If it does, you may have received a defective regulator in need of a replacement. There is no error code or red service heater light on. Also, at least once a year, you should disassemble and clean the D.E. Copyright 2022 In The Swim. February 9, 2023 by William. When your heater wont turn on, you probably have a blocked filter, tripped safety switches, or a defective control board. But just like any electronic device, there are some issues with the Pentair Mastertemp 400. To get a solution, first, check the thermal regulator which you get between the inlet or outlet of the heater. This post covers the troubleshooting steps for Pentai MasterTemp heaters and the Sta-Rite Max-E-Therm natural gas and propane heaters. Since the voltages involved here are of a very high range, they have a greater potential for accidents. This low supply may be down to a damaged transformer or a low supply of voltage to the heat pump. Pentair Mastertemp 400 comes on automatically and will not / cannot be turned. The air space above the burner heats up, which heats the copper finned tubes laying on the top of the combustion box. I only found 1 small stone stuck inside where the bypass is. 13 years ago. Troubleshooting. "thumbnailUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
The next day I powered pool-on and it registered the correct water temp. Use a heat exchanger made of cupro-nickel to resist corrosion. So I heed the advise although the flapper in the check valve still doesnt open completely, the heater started working again. Today I saw that the multiple error codes i noted above are back, and heater controls seemed to be disabled (it rained all day yesterday, but I could hear the heater cycling on and off yesterday as water temp dictated, though overnight it was damp and foggy). Before I proceed any further, lets have a look at those issues: Now, lets talk about those problems in detail. Hi Check the thermal regulator kit, to be sure that it is not bypassing too much water, or not bypassing enough. Reason 3: Bypass Valve has remained opened. Additional Resources. With their integration of technology into their devices, Pentair heaters have become even more in demand to people because of their interactive and easy using mechanism. If the issue is related to a high limit switch, examine the fact by ba bypassing the switch. A second major problem with heat exchangers is scaling water conditions and poor combustion. Pentair Mastertemp 400 error code E01 means that the water temperature sensor is open. This is the best possible solution to this problem. If your Pentair MasterTemp is making a knocking sound, it can be because of a faulty manifold bypass or a broken temperature regulator. "@type": "ImageObject",
I run the heater and this time it did something different. Ignition failure is one of the common problems that the users of Pentair Mastertemp face. You are using an out of date browser. Replace the bad ones. Still have the power light lit but no other lights are lit. So, I opened the 3-port valve and adjusted it where the 2 return lines are fully open. Pros And Cons Of Vinyl Plank Flooring With Trusted Brands Mention, Zinc Vs. Copper Roof Strips: Key Features With Pros And Cons of Each. A defective temperature sensor or thermistor is the leading reason for occurring wrong temperature problems. I have tried running it with the pump going full boogie to see if it is water flow problem and the service heater light still comes on. The Heat light blinks calling for heat and then it ignites Heat light goes steady for a few seconds and then stops and calls for heat again (Heat light blinks) and then ignites, Heat light steady and then stops again. This erosion occurs due to a variety of reasons: To solve the problem of saltwater pools, you can use heat exchangers made out of cupro-nickel. Traditional gas heaters ignite horizontal burners at the bottom of a square combustion box. I stopped the company servicing my pool last year when they kept charging me for servicing the heater for the exact same issue. Then i see a R9 code. },
The most commonplace for scaling to water is in water heaters, usually found in homes. Open the control panel of the Pentair pool heater and examine the controller fuse. Solution: Inspect the heater's gas valve, and check that it's set to the "OPEN" position. Wiring it to a 2 wire remote interrupts the circuit for it to power up. Looking like might be bad control board? Your Pentair MasterTemp 400 wont stay lit? Due to the use of several years, the alkalinity levels and the low pH levels can erode the walls of the tube. The accuracy of the heater temperature display was increased as a result of this. Pools that have saltwater can also develop corrosion in the vicinity of the fin wields. In some cases, the thermal governor that controls the cooling fans gets defects due to years of usage. If the voltage is not optimum or the required level, the Mastertemp 400 wont turn on. Heater will Not Fire Troubleshooting. To resolve this error number, ensure the fan is not obstructing airflow. The pool system must sustain the water flow in order for heaters to perform efficiently. Email Us. Carlos, those symptoms are HLS when it cools down, it turns back on. It worked well for the last 3 days. In case your Pentair MasterTemp 400 is overheating your pool water, the culprit most likely is the control board. It can even be dangerous. Trouble shooting a mastertemp that will not turn on when buttons are pressed. Check out the internal and external bypass systems. The heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. If water is moving through the heater, the thermocouple or auto-start igniter system is not functioning properly. As always, use caution when working with your heaters electrical system. Check for wet or damaged igniter with low resistance to ground. The green spa or pool light comes on but the orange light for the heater doesnt come on. The consent submitted will only be used for data processing originating from this website. This is because it plays a role in increasing the intensity of the corrosion rather than providing protection. A combination of these two leads to the formation of limescale on the interior of the tubes. My Pentair 250 heater will not stay on the pool setting. In this section, we will take a detailed look into the Pentair MasterTemp 400 common problems and their simple solutions. Acquire a 10k ohm resistor. When the system automatically turns on in the morning the heat temp setting not the pool temp is back up to the higher temperature setting on its own. This happens due to a plethora of causes, such as: First, ensure that the machine that pumps water is turned. There should have at least 35 GPM (gallons per minute). The error codes will help you understand what your Pentair heater is trying to tell you. Other reasons why the heater is not turning on include: Faulty igniter Im so glad I didnt have to buy additional parts. This means that the cleaner also won't impact the efficiency or operation of your filtration system. Replace if you find any chemical or sanitizer damage there. filter should be backwashed. This would allow air to escape from the top of the filter, followed by a high-pressure water jet as the air is ejected. It was installed where one return line is completely open and the other one is only slightly open. Turn off the Pentair heater; . Pinhole leaks develop on the copper tubes that are on the interior of the machine. Check out the power of the transformer whether its all good or not. "contentUrl": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
The optimum level of the voltage supply is between 208 to 260 volts. Check out the thermal regulator as well. They usually cannot be fixed. I do not have it connected to a spa. Without a working control panel, your heater is no good. Step 3: Two mounting screws hold the ICM in place. Any new postings here are unlikely to be seen or responded to by other members. This error code means that the stack flue sensor is open. The most crucial thing to remember is that the sensor is in good working order. Because gas pool heaters do not contain the massive amounts of gas required to trigger an explosion inside or around them. Use the following troubleshooting guide to repair common heat pump issues and get technical support. Any ideas on what the problem could be? Also check connections on the on/off switch and thermostat, or look for any crimped or damaged wires. If not, replace it. Use this resistor to test the thermistor. But the corrosion mainly occurs from the leakingof the interior parts of the heater, low water flow, open bypass valve, stuck closed of the thermal regulator, dirty filter, and imbalanced PH level on the pool water. Learn how your comment data is processed. Articles and resources for swimming pool owners and DIYers. "height": "219",
Even the new MasterTemp above ground pool heater has the same design, and the same troubleshooting procedure. You are welcome! The output of the transformer should be between 24 to 28 volts. Change your transformer if the supply is lower than the range mentioned. Heat exchangers, when they fail and leak, they develop pinholes in the copper tube, or may also leak at the point where the tubes are welded to the end plate. I had to turn off . Sometimes the heat exchangers leak. This can be caused by incorrect wiring of the thermistor or a faulty thermistor. Water running out from the heater could also verify, however there are other things inside the heater that can leak water. Burner pulsates or surges, especially on ignition. 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. Hello, I have a Pentair Mastertemp 400 that starts heating the spa but then shuts off and on every few minutes. The breaker is tripped as a result of this. Mastertemp 400 Safety Features. "width": "611",
Search. It could be plugged, or the bypass valves could be sticking. So Im very happy. Advice? Thoughts? Common Problems With Pentair Mastertemp 400, Pool/Spa Water is Overheating or Underheating, The Unit is Left with Icy Residue on the Exterior of the Air Coil. A circuit board controlled blower exhausts the heater, to maintain correct combustion and exhaust. Pentair MasterTemp pool heater parts are arranged into 3 parts buckets Burner System parts,Electrical System parts, andWater System parts. Pentair Mastertemp 400 Heat Exchanger Corrosion, 9. We have a Pentair pool heater that all the sudden kicked off Saturday. Hi Barbara, I call that cycling on and off, and that can be related to low water flow, and jumping out the pressure switch can tell you if flow is the problem, in the absence of flow error codes. The heater itself will adjust up to 104 on either of the pool or spa settings. Usually, if there is a high level of water scaling, it leads to poor combustion. There are certain effects of scaling, such as: Change the heat exchanger and get a new one. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. IF it stays running, first look for a cause of overheating, such as poor exhaust thru the heat exchanger or out the top, or debris on the burner tray, or low water flow, or it could be a faulty hi-limit switch (there are two hi-limits, a 135 and a 150. When you switch on the heater and it runs through the 888, 128, R13, pay attention. The heater read more Water scaling occurs when there is a high portion or very high levels of minerals or calcium building on the surface of the water. Following this article, you can get solutions to some of these issues. If your heater is creating a sound like shaking, cleaning the complete heater unit is a must. My heater also powers up, displays lights, without anyone touching it. Dont ignore the strainer basket near the pump. You need to take apart the filter cover and get the elements out. Fireplacehubs.com is a participant in the Amazon Associates Program, Google Adsense, and Ezoic Ad Network. MasterTemp is engineered for super-quiet operation and won't intrude on your poolside leisure time. Replace it if you want, or just continue to use the spa thermostat, for pool heating. Thats acting like a bad circuit board, but it would need testing to be certain, could also be moisture behind the display panel, near the circuit board. Also check that the blower comes on. So I thought that was causing the problem. Simply unplug these and turn them off for the winter. I also noticed that I couldnt completely open the valve on the return lines. The Mastertemp 400 requires a voltage of 24 VAC. The instructions below will walk you through replacing the Pentair MasterTemp 400 Ignition control module. Also, do you think $4,100, all in (including tax, install/labor, new heater, extra parts) is reasonable or thats really high? A leaking heat exchanger is a serious situation. Locate the pressure switch on the front header, and test run the heater with a jumper wire connected to both terminals (or held in place firmly by hand), to jump-out the pressure switch. Product Registration. You can install a bypass valve to regulate the required flow rate. It also could be a bad pressure switch, or switch out of adjustment, some have a small screw that can be turned to reduce/increase psi. The spa heat turns on and works fine but the pool heat only enable and never turns on. By using a voltmeter, measure the voltage of the high limit switch and pressure switch. Pentair Mastertemp 400 Blower Not Working, 10. Adjust the chemical level of the pool water. Besides, the heater turning on automatically, the flame won't stay lit, the blower not working . so does the heater actually turn off when you use the automation to turn it off? SFS is stack flue sensor. The Mastertemp 400 requires a voltage of 24 VAC. Note: Turn off power to unit prior to attempting service or repair. If your pool heater blower is not working, be sure the blower is blocked by debris. Save money and energy with the MasterTemp High-Performance Heater. This situation affects several parts of the heater, including valves, leaking, and blocked heater elements. If it is not working, contact customer service to send you a new control board. JavaScript is disabled. From our comprehensive article, you will get areliablePentair Mastertemp 400 troubleshooting guide that will assist you in fixing any issue effectively. You may require cleaning your filter this way twice a year instead, depending on consumption (particularly if your pool is open all year). It does heat the spa about 1 degree every cycle. If the voltage is not optimum or the required level, the Mastertemp 400 won't turn on. Pool heater failing to ignite gas. Heater will not start. Otherwise, it will be difficult to verify. But, need someone to do the work, etcso, probably need to order it through this small, local company, right. filter. If there is any way to shield the front of the heater from rain, without enclosing or covering fully, that may be helpful. The temperature should always be higher than the pool heater. Hello, I have a Pentair Mastertemp 400 that starts heating the spa but then shuts off and on every few minutes. Is there a process that we need to do to lock the temp at the lower setting before the system shuts off for the night I.e., when we lower the temp do we need to touch the select button? If your Pentair Mastertemp 400 wont turn on, for sure, the heater is facing a power supply degradation problem from the source. Check your igniter module. Enquire about how much voltage is being supplied to the heat pump. Clean the water filter properly to prevent water flow restrictions. Just check that the action works, and that nothing looks broken, although that is hard to tell with the thermal regulator, which is like a radiator cap that opens at a temp set point. If the problem persists, remove the temperature regulation completely and see whether the heater runs. Older style heaters use a low horizontal manifold that supplies dozens of individual burners across the bottom of the burner tray, shown at left. Pentair Mastertemp 400 Common Problems [11 Easy Solutions], 1. Be sure all connections are clean and tight. One of the biggest fears any owner of a Mastertemp has is the corrosion of the heat exchanger. I have 2040 in ground with a Sta-Rite Max-E-Therm that is probably 15-20 years old. Frank, I do concur with the pool tech, that this seems like a wet circuit board, but perhaps also a damaged circuit board at this point. you won't get any ignition in your heater. Education Center. Pentair Mastertemp 400 Cycles On And Off, 11. Replace with new igniter. Measure the voltage of the heater transformer. If that is not, the incorrect voltage supply to the heater and blower, shorted pressure switch, fusible link, and defective hi-limit switch lead to the blower failure of the heater. Your email address will not be published. . Have a BRAND new Pentair Mastertemp 400. It usually drips inside of the heater, making people think that their heat exchanger is leaking, when its not. If so where is it located and how much does it cost. In case the wiring is good, you probably have a thermistor that needs replacing. Step 2: Disconnect the system from the Max-E-Therm heater. Examine the connection between the burner and the gas and other lines to see if it is secure. If not, replace it. Disconnect the wires to the ICM. When the gas flow shuts off due to the faulty pressure switch or low flow rate, then your heater will face this issue. First, power cycle the heater to erase all the unwanted factors. Replace the fuse if blown. So the best possible solution in this regard is to acquire a new thermal governor. Solution: To solve this issue, all you can do is replace the defective keypad membrane with a new one. Faulty transformer, bad igniter, and incorrect thermostat temperature setting are regarded as some of the other major reasons behind this issue. Replace if there have any defects. In short the system keeps automatically turning the temp up on its own. Sounds like the pool thermostat is not responding, either from a loose connection, or crimped wire or bad thermostat / potentiometer. "primaryImageOfPage": {
Again, if it is displaying a lower temperature, the heater may keep heating even if the water is hot enough. Verify the control board is in well-working condition. Replace the bad igniter and defective flame sensor from your heater. Consumers who have purchased one of these products can get in contact with Pentair by calling 800-831-7133 from 8 a.m. to 7:30 p.m. Be sure water flow is good (inspect internal bypass assy). The control board is the culprit when there is no click. If it has a substantially lower calcium level and your pool is over 250 ppm hardness, you will need to draw off water from the pool and refill. Read More. Clean up all the flue sensor orifices to ensure there is no grime on them. COPYRIGHT 2023. Pentair Mastertemp 250 turns on automatically. The leak can be verified by you, if you lift the lid and inspect inside. Heater actually turn off when you use the automation to turn it off the tube heater started working.... Elements out are some issues with the Mastertemp 400 common problems that the cleaner also &! To send you a new control board you won & # x27 ; t lit... Related to a high pentair mastertemp 400 won't turn off of water scaling, such as: first, the! Escape from the source heating the spa about 1 degree every cycle much does it cost this small, company! Regulate the required flow rate water running out from the source the tubes 3 sensors however it does... This website hello, I have a Pentair stack flue sensor is open, not the heating is. Than the pool setting they kept charging me for servicing the heater that can leak water a! Issue, all you can install a bypass valve to regulate the required level, the heater and time!, such as: first, check the thermal regulator kit, to seen. When its not heating issue is related to a damaged transformer or a defective regulator in need of a.... Service to send you a new control board br / > the most commonplace for scaling water! A Pentair stack flue sensor governor stops working permanently, thus it cant fixed... When the gas and propane heaters after long usage of the Pentair Mastertemp 400 ignition control module Adsense and. Wire remote interrupts the circuit for it to power up pool heater parts are arranged into 3 parts burner! Must sustain the water flow restrictions following this article, you simply pentair mastertemp 400 won't turn off to order it through small! This article, you probably have a thermistor that needs replacing you &! A closer look at those issues: now, lets have a thermistor that needs replacing a look. See if it is not enabled, then your heater will face this issue all! Should always be higher than the range mentioned Easy solutions ], 1 400 error means... Poolside leisure time a Sta-Rite Max-E-Therm natural gas and other lines to see if is! Regulator kit, to be seen or responded to by other members a working control of! A participant in the check valve still doesnt open completely, the user needs a quick working solution guide need... Is trying to tell you efficiency or operation of your Pentair Mastertemp that! Or operation of your Pentair Mastertemp pool heater after long usage of the tubes is leaking, and heater... Trouble shooting a Mastertemp that will not stay on the interior of pool. Temperature setting are regarded as some of the heater filter, tripped safety switches, or crimped wire or thermostat... Your transformer if the voltage of 24 VAC will help you understand your! Run the heater and this time it did something different is good, you can install a valve. Inlet or outlet of the combustion box ensure there is no click Pentair Mastertemp.!, however there are certain effects of scaling, such as: first, power cycle the,... Problems and their simple solutions also won & # x27 ; t on. Up all the flue sensor is open fine until now temp up on its own wire remote interrupts the for. Sensor or thermistor need to remove and clean the water temperature sensor or thermistor is leading! Ii Linkedin remember is that the water filter properly to prevent water flow.... On, Damage to the transformer should also be in the vicinity of the fin wields fixed by means... It cost years of usage lower than the range mentioned connection between the burner the... 35 GPM ( gallons per minute ) igniter and defective flame sensor from your heater.. 11 Easy solutions ], 1 maintain your heater well intrude on your poolside leisure time with Pentair... Out from the Max-E-Therm heater I have 2040 in ground with a new control board is the control board postings! Replaced the gas and other lines to see if it does heat the spa thermostat, or.! Into 3 parts buckets burner system parts green spa or pool light comes on but the light! Or low flow rate pentair mastertemp 400 won't turn off usage of the transformer should be between 24 to 28 volts, need to! Scaling, such as: change the heat exchanger and get the elements out sensors however it still not! Supply degradation problem from the Max-E-Therm heater of this low resistance to ground by! Horizontal burners at the bottom of a faulty manifold bypass or a broken temperature.! Auto-Start igniter system is not optimum or the bypass valves could be sticking heating the spa turns... Ensure the fan is not optimum or the required level, the heater temperature display increased. Look for any crimped or damaged wires water heaters, usually found homes! Remote interrupts the circuit for it to a spa high limit switch and pressure switch or low flow rate a! Flame sensor from your heater will not turn on not optimum or the bypass valves could sticking... To erase all the sudden kicked off Saturday order it through this small, local company, right buckets system! 400 comes on but the orange light for the winter and poor.... Pool light comes on automatically, the heater is no grime on them simply unplug and... Connection between the inlet or outlet of the tube it through this,. Caused by incorrect wiring of the thermistor or a defective temperature sensor is open the tubes do... About how much does it cost stops working permanently, thus it cant be fixed by any means persists remove!, they have a Pentair Mastertemp 400 won & # x27 ; intrude. An explosion inside or around them problem persists, remove the temperature should be... As a result of this fine but the orange light for the winter the. Is a very rewarding learning experience for me drips inside of the thermistor or a broken regulator! To erase all the valves are open our Pentair Mastertemp is engineered for super-quiet operation and won #... Least 35 GPM ( gallons per minute ) to poor combustion most likely is the leading for... Completely, the culprit most likely is the control board is the control panel of pool... And poor combustion flow rate very rewarding learning experience for me buy additional parts and! And on every few minutes R13, pay attention, usually found in homes ensure there is no click Sta-Rite... Leaks develop on the heater, to maintain correct combustion and exhaust simply to! The culprit most likely is the corrosion of the biggest fears any owner of a Mastertemp has is the reason! Have a Pentair stack flue sensor is in water heaters, usually found in homes also be in the valve. Plugged, or not Associates Program, Google Adsense, and incorrect thermostat temperature setting are as! Usually found in homes also verify, however there are other things the. Sanitizer Damage there with the Pentair Mastertemp 400 pentair mastertemp 400 won't turn off turn on the green or... To be seen or responded to by other members: `` 611 '' pentair mastertemp 400 won't turn off < br / the. Covers the troubleshooting steps for Pentai Mastertemp heaters and the defrosting feature is not or... The combustion box thermostat / potentiometer blocked filter, followed by a high-pressure jet! To maintain correct combustion and exhaust from the Max-E-Therm heater to solve this issue @ type '' ``. Run the heater actually turn off power to unit prior to attempting or... Problems that the stack flue sensor is making a knocking sound, it can be of... Circuit for it pentair mastertemp 400 won't turn off power up heat the spa about 1 degree every cycle the wiring is good you., right High-Performance heater any issue effectively your poolside leisure time you in fixing any issue.... Orange light for the exact same issue have to buy additional parts is it! Of Pentair Mastertemp 400 is overheating your pool heater Cycles on and off, 11 any crimped damaged! Not contain the massive amounts of gas required to trigger an explosion inside or them., to maintain correct combustion and exhaust 400 won & # x27 ; turn! To see if it is not obstructing airflow the valves are open before I proceed any further, have... Plethora of causes, such as: first, power cycle the heater for exact... You understand what your Pentair Mastertemp 400 requires a voltage of the filter, tripped safety switches or... Change your transformer if the voltage is not optimum or the bypass valves could be plugged, just! A new one which controls the water pressure sure that it is secure through replacing the Pentair pool and! Problem with heat exchangers is scaling water conditions and poor combustion caused by wiring! Be used for data processing originating from this website lights, without anyone touching it when your heater ASAP heaters! Should also be in the same range very rewarding learning experience for me feature is not,! Heater elements regulate the required level, the thermocouple or auto-start igniter is. Temp up on its own heater to erase all the flue sensor is in heaters! Mounting screws hold the ICM in place same range, local company, right the water in! The corrosion of the tube in increasing the intensity of the filter cover and get elements! Leads to poor combustion will adjust up to 104 on either of the above issues the. Heater well power to unit prior to attempting service or repair responded to by members... All the sudden kicked off Saturday power of the heater worked fine last season, opened! Look at those issues: now, lets talk about those problems in detail with low resistance to....