pentair mastertemp 400 won't turn off

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. All Right Reserved by HeaterFixLab. After about 30-45 seconds, the heating green light goes off and it shows service heater and the panel Water Flow Problem. "height": "219",
The Thermal Governor has become jammed and is unable to open. 4. Check out the power supply to the pressure switch, fusible link, and high limit switches as well. Possible Cause: Pilot light isn't lit. By contrast, the Sta-Rite Max-E-Therm pool heater design, now adopted by Pentair, has stacks of circular heat exchanger tubes, surrounding a combustion cylinder. Your Pentair MasterTemp 400 display not working generally means that your unit is not getting power, you have a blown glass fuse, or a defective control board. Examine the connection between the burner and the gas and other lines to see if it is secure. The Service Heater light comes on when the heat shuts off, seems to reset after a minute or so, then the Service Heater light turns off and the spa starts heating again. As always, use caution when working with your heaters electrical system. 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. So, I opened the 3-port valve and adjusted it where the 2 return lines are fully open. Pentair MasterTemp pool heater parts are arranged into 3 parts buckets Burner System parts,Electrical System parts, andWater System parts. Traveler, food lover, interior designer, and blogger. To safeguard your heater from freezing temperatures, do two things. This low inventory might be down to a harmed transformer or a low stockpile of voltage to the hotness siphon. Learn how your comment data is processed. Anyway, fix the problem by following the below methods: If the water level is too low than normal on your pool heater, it would be a possibility of a clogged water filter. "name": "In The Swim",
Ensure enough gas supply on the heater. Possible Cause: Gas supply valve. Follow the below instructions to resolvePentair Mastertemp 400 keeps shutting off and on issue: Knocking sounds occurs due to the clogging in the skimmer or the strainer basket of the pump or the pool. When I finally was able to control again (for a time, keypad controls seemed to be disabled), I shut heater off, let it sit for a time. I look forward to your advice. Education Center. filter. You may require cleaning your filter this way twice a year instead, depending on consumption (particularly if your pool is open all year). All . My MasterTemp 400 fails to work intermittently. We activate both functions from a Jandy control inside the home Theres no code on the machine outside to indicate possible problems. Alternatively, the temperature display can sometimes be quite inaccurate. The service system light is on, and it has two red lights on, on the reverse side of the motherboard. Can you give some thought? The biggest fear about theheat exchangeris that corrosion can occur to the relatively soft copper finned tubes, causing them to develop pinhole leaks. The Mastertemp 400 requires a voltage of 24 VAC. . Pentair Mastertemp 400 Knocking Noise. This kind of damage can be very costly. I had to turn off . Smart connectivity via the Pentair Automation Systems enable you to manage pool . If your pool heater blower is not working, be sure the blower is blocked by debris. Lower gas supply, blocked filter, defective gas valves, gas supply valves, or plumber valves are highly responsible for this. I sent the following on May 23, but received no reply/advice. Check the pumps strainer basket if the filter has been cleaned and the PSI is not high. A thermistor is mainly regarded as a temperature sensor. Pentair MasterTemp 400 error code E06 is displayed on your LED screen when the stack flue sensor has shorted. If replacing the keypad membrane hasnt stopped your heater from turning on automatically, you need to call customer service for a new control board. Your email address will not be published. Other major reasons include: . The wiring diagram is given below for your reference. Also, at least once a year, you should disassemble and clean the D.E. Replace if there have any defects. 39. Among the most common problems associated with all pool heaters and not the Mastertemp 400 alone is inaccurate temperature control. Work through the steps listed above and youll be cannonballing into your warm pool in no time. Check the wire going to the sensor and the sensor itself. Hello, I have a Pentair Mastertemp 400 that starts heating the spa but then shuts off and on every few minutes. I replaced the HLS twice to no avail. Bought the house 2.5 years ago. Is enough water getting into the heater? Please consider. With nearly 10 million pool pumps operating in, In our second in a series of pool parts pictorials, this time we take a high-res look at parts for gas pool, WhenHayward multiport valves start to age different problems can arise, some are just annoying and some are actually detrimental to the filter, Pentair Pool Heater Troubleshooting Guide, Must Have Accessories for Above Ground Pools, http://www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf. When I hold it, the temp slowly went up to 90. I just never thought something was wrong with it because the company servicing my pool and heater had it setup like that. "url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide",
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. Faulty transformer, bad igniter, and incorrect thermostat temperature setting are regarded as some of the other major reasons behind this issue. The spa heat turns on and works fine but the pool heat only enable and never turns on. The water circulating through the copper heat exchanger tubes absorbs the heat, and exits the heater a few degrees warmer than when it entered. Heater will not turn off and a 5F code with a flashing 1. http://www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf Page 37. 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 so where is it located and how much does it cost. You are welcome! The pool system must sustain the water flow in order for heaters to perform efficiently. "author": {
To allow water to pass through the heating system, make sure the valves are open. Measure the voltage of the heater transformer. Jeld-Wen Vs. Pella Windows: Which One Is Worthy For Your House? Unfortunately, the only way to solve this issue is to get a new heat exchanger. Water running out from the heater could also verify, however there are other things inside the heater that can leak water. Here we have elaborated on all the troubling points as well as the fixing steps. Test your control panel with a multimeter. I think its a bit on the high side. After every one to three months or when you get 510 PSI of pressure on the air filter, your Pentair MasterTemp 400 D.E. Solution: Inspect the heater's gas valve, and check that it's set to the "OPEN" position. },
Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Look for a short between the Thermistor and the control boards wiring. Looking like might be bad control board? People often confuse or term this leakage as sweating. Curt could be a short in the thermostat wire, or the thermostat could be going back, check the wire connections for rust/corrosion. The Pentair MasterTemp common problems include- ignition failure, temperature problems, heater keeps shutting off, display not working and the heater not turning on. Same issue continues. A combination of these two leads to the formation of limescale on the interior of the tubes. In case you have any queries regarding your Pentair MasterTemp 400, leave us a comment. It continuously bounces between pool and spa. You may need to replace it if you get it corroded. The hi-limit switches are also on the front header of the minimax, and likewise, can be jumped-out by following the wires to where they connect, and using a jumper across the terminals. Lets start. Check for any blockage of the burners, by something fallen on the burners, and up top, be sure the heater exhausts properly, no obstructions in the venting (birds nests, leaves, soot). Another thought is that the internal bypass, in the front header/manifold, may be broken or stuck open, allowing too much water flow to bypass, which causes the water in the heater to over-heat? Gave me directions to check thermistor output which I verified is working correctly: 7.7K ohms for 89 degree water. 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). "logo": {
The reason is simple: TFPC (Trouble Free Pool Care) is a methodology, not a product that you must purchase. The correct temperature of water depends on the user. "image": {
If not, replace it. 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? On older heaters like the minimax, its not uncommon to have wiring issues, with loose wires or corroded terminals, or crimped or chewed wires from rodents or insects. Thoughts? Heat exchangers manufactured of cupro-nickel can be used to alleviate the problem of saltwater pools. When I turn it on the blower comes on as well as the heater light starts blinking. Step 3: Two mounting screws hold the ICM in place. It 'rattles' 3 times, doesn't - Answered by a verified Pool and Spa Expert . It means that the ignition control module has failed to ignite the heater. Now, check out the voltage supply to the control board. The Pentair MasterTemp common problems include- ignition failure, temperature problems, heater keeps shutting off, display not working and the heater not turning on. Above the fireman switch is a 1 1/4 amp fuse. Inaccurate Temperature Control or Display. Ensure that the power outlet your Pentair heater is connected to is good and provides the appropriate amperage for the heater. When I ask for heat, the service system and service heater lights briefly light up red then turn off. A circuit board controlled blower exhausts the heater, to maintain correct combustion and exhaust. I also noticed that I couldnt completely open the valve on the return lines. Pools that have saltwater can also develop corrosion in the vicinity of the fin wields. As it plays a big role in continuing the heater function, thus there has a high risk of corroding this part. When the condenser coil on your heat pump gets unclean, it needs to work more to provide equal amounts of heating as normal. Besides, the heater turning on automatically, the flame wont stay lit, the blower not working, low water flows, error codes, a defective control panel, dirty filter, noise, freeze damage, and heat exchanger problems can trouble you while using Pentair MasterTemp. If the airflow isnt sufficient within this period, the heater will turn off on its own. It should be damaged and crack-free for fluent water flowing. We will do our best to help. The accumulation of minerals on the surfaces of the pipes acts as a barrier against corrosion. The insufficient water level in the pool and incorrect voltage supply in the pressure switch is also responsible. when temp is down it kicks on as soon as it goes over setpoint it shuts off. This problem can be resolved by servicing the pump or filter. Is it possible to replace the heat exchanger or do I need to replace the entire heater system altogether. Adjust the chemical level of the pool water. If the supply valve is OFF, turn it ON. I connected my old termistor and got a reading of 85 degrees. Simply unplug these and turn them off for the winter. Call Us Nationwide: 1-800-741-9956. . Due to the use of several years, the alkalinity levels and the low pH levels can erode the walls of the tube. Replace in case necessary. Frequently Asked Questions. Hello. It sits in a pool shed, with decent, not great ventilation. The instructions below will walk you through replacing the Pentair MasterTemp 400 Ignition control module. 38. Outdoor Shelder, Horizontal Venting - Using Single-Wall Stainless Gas Vent, Connecting Single-Wall Stainless Steel Vent to the Heater, Horizontal or Vertical Venting Flexible Duct (Flex-Vent), Combustion Air Supply / Corrosive Vapors and Possible Causes, Direct Air Intake Duct with 3-Inch PVC Pipe (Indoor Installation), Remote Control Connections (Fireman's Switch Connection), Connecting the Mastertemp Heater to the Intellicenter Control System Load Center Via RS-485, Mastertemp Heater Electrical Schematic Ladder Diagram, Basic System Operation / START-UP OPERATION - HSI (Hot-Surface Ignition) Lighting/Operation, Safety Controls (Air Flow Switch / Water Pressure Switch / Hight Limits / Operation of Ignitiion Module), Control Panel / Menu Navigation / Operating the Heater, Heater will Not Fire Troubleshooting (A, B), IGN Is on ALARMS: AGS, AFS, HLS, PS, E01 or 126 / SFS, Liming the Heater - Pressure Relief Valve, Spring, Fall (Autumn) and Winter Operation, Maintaining Pool Temperature / Energy Saving Tips, Pentair MASTERTEMP 400 HD Installation And User Manual (54 pages), Technical Data / Heater Identification Information (HIN), Indoor Venting-General Requirements Heater Clearances / Outside Vent Removal ), Horizontal or Vertical Venting - Using Single-Wall Stainless Gas Vent, Fireman's Switch Connection/Remote Control Connections, Mastertemp Wiring Diagram / Electrical Schematic Ladder Diagram, Initial Troubleshooting and Troubleshooting Chart, LED Diagnostics (AGS, AFS, HLS, PS Thermistor), Pentair MASTERTEMP 400 HD Brochure (4 pages). If needed, hire or call a dealer to check it for you or take advice on necessary precautions or methods. in 1995. There can be an issue with the fuel supply, thermal regulator, or the sensor orifices which is causing this error code. You May Like: Bud Light Ugly Sweater Seltzer 2021. Continue with Recommended Cookies. Once set up, select the . When there build very high levels of minerals especially calcium on the surface of the water, the intensity of the corrosion increases instead of protection. 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. The heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. Replace it if you find no voltage there. If it doesnt work, contact the Pentair customer support center. Without gas, the heater won't operate. I tried to turn it off at the control panel by pushing the heater off button but it would just . If the filter isnt the issue, a faulty safety switch is next to check. Why is my Pentair pool heater not coming on? Some other problems that Pentair Mastertemp 400 pool heater users face are the blower not working, not heating, not igniting, not turning on, knocking noise, and cycles OFF/ON incessantly. This also includes changing outdated copper tubes that sit on the interior of the machine. This situation affects several parts of the heater, including valves, leaking, and blocked heater elements. We manually turn up the temp to a warmer setting when we swim while the system is running. First, you need to check on the wiring connection of the thermistor. This can cause cycling. Older style heaters use a low horizontal manifold that supplies dozens of individual burners across the bottom of the burner tray, shown at left. You could also take the heat exchanger for servicing. It 'rattles' 3 times, doesn't fire up, then the SERVICE HEATER light comes on. If still, the problem is persisting, reset the heater by turning the breaker ON and Off positions. },
Step 2: You then need to take apart the Max-E-Therm heater from the system. I only own a pool. Hopefully, now you have a crystal clear idea of each of the Pentair Mastertemp 400 problems. . Recalled Pool Heater Model Numbers. Repair or replace the pilot lit. This should not be a cause for concern, though. When your heater wont turn on, you probably have a blocked filter, tripped safety switches, or a defective control board. I also noticed that the flap wasnt opening even at 3450rpm and 20-25psi. There will be a reduced water flow if you see that the switch that detects pressure is open. Heater is Pentair Mastertemp 200, installed May2017. Replace the defective heat exchanger if needed. Now check out the heat exchanger as well. "@type": "ImageObject",
I designed my home myself with the help of my beloved wife. The automation system controls the heater and tells it when to turn on / off. In case your heating system is clean and free from loose debris, it is most likely the manifold bypass. If the problem persists, remove the temperature regulation completely and see whether the heater runs. Pentair Mastertemp 400 error code E01 means that the water temperature sensor is open. Step 4: Now take the new ICM and put it in the Junction Box chamber. It could be plugged, or the bypass valves could be sticking. I have a MasterTemp400 unit that has been in place since about 2010, wherein the "Heater Off" button won't turn the unit off. Disconnect the wires to the ICM. On the thermostat, set the correct temperature. Replace the blown fuse with a new one and turn on the pool heater to check whether the display is working properly or not. We have a Pentair 300 for both spa and pool heating. "
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. Broken safety switches, faulty transformers, and wrong temperature settings are also responsible. As we have seen, there are some Pentair Mastertemp 400 common problems that may also face. They will help you out with replacing your control board. When your Pentair Mastertemp 400 keeps shutting off, it could be caused by a faulty temperature sensor, a low water flow rate causing the heater to overheat, or a bad control board. Check that the heater is getting sufficient gas supply and pressure to run. The leak can be verified by you, if you lift the lid and inspect inside. Voltage checks have the potential for a lot of danger. Hi Peter, when he says the heat exchanger is shot, he must mean that the copper tubes are leaking water, caused by erosion and corrosion from high water pressure or low pH and alkalinity, over many years. Maintenance goes a long way when it comes to heater shelf life. But, need someone to do the work, etcso, probably need to order it through this small, local company, right. },
Installing a pool heater is not simple, but is done DIY all the time. The MasterTemp has a max setting of 104. By using a voltmeter, measure the voltage of the high limit switch and pressure switch. Replace the bad board. Be sure water flow is good (inspect internal bypass assy). Chemical or sanitizer damage and loss of connection to the pressure switch also lead to this issue. For that, clean out the water filter first. 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. This means that the cleaner also won't impact the efficiency or operation of your filtration system. The solution to your heater issue is given in your previous comment. Then i see a R9 code. An HVAC company would install it as well, or an Appliance company. See if the igniter fires when you turn on the heater. If the temperature outside is chilly and the defrosting feature is not enabled, then enable the feature. I would place the valve perpendicular to the pipe, to block all bypass flow, and see if that makes a difference? "url": "https://x1.adis.ws/v1/media/graphics/i/lesl/its-logo-wide"
I shouldve tried harder to learn how the pool works. You need to take apart the filter cover and get the elements out. Pentair Mastertemp 400 cycling, no lights/error codes, Pentair Mastertemp 400 No Blower No Flame (HLS light and Service Heater light on), With over 300,000 members, TFP is the largest and most influential pool & spa website on the Internet. Pentair water heaters have garnered a dependable reputation for being efficient. Cupro Nickelheat exchangers can be used for much greater resistance to the effects of salt water corrosion. Im so glad I didnt have to buy additional parts. you won't get any ignition in your heater. The PS is red, and led6 is red. Sometimes users have the experience of a low heating problem, or the heater is totally out of its duty. But if the scaling is of a high level, it becomes detrimental to the machine. Other reasons why the heater is not turning on include: Faulty igniter Then it came back on without my doing, switched to spa mode and commanded 110F setpoint. The wires and connectors connecting the legacy ICM should be disconnected. As your unit is a new one, to fix your pool heater issue, it would be wise to contact the Pentair customer support center or your local Pentair dealer. So you could save $1000 by buying online and having a company install. If the thermistor tests are bad or faulty, replace them with a new one. Heres how to do it: The Pentair MasterTemp 400 error AFS appears on the display when the airflow switch is open. Articles and resources for swimming pool owners and DIYers. Thanks for the help. This low supply may be down to a damaged transformer or a low supply of voltage to the heat pump. You are using an out of date browser. An example of data being processed may be a unique identifier stored in a cookie. "description": "Pentair Pool Heater Troubleshooting Guide, step by step method to find and fix your Pentair gas pool heater, the Minimax or Mastertemp. Fireplacehubs.com is a participant in the Amazon Associates Program, Google Adsense, and Ezoic Ad Network. It is inevitable for any electrical device to incur damages after a while of usage. Pentair Pool Filters, Pool Pumps, Pool Heaters, Pool Lighting & Pool Automation. However, about 3 to 4 months ago it started turning itself on and heating the pool. "height": "219",
Also check connections on the on/off switch and thermostat, or look for any crimped or damaged wires. https://w. Pentair Mastertemp 400 keeps shutting off, Pentair MasterTemp 400 display not working, Pentair MasterTemp 400 blower not working, Torpedo Heater Keeps Shutting Off [9 Easy Fixes], Comfort Zone Heater Not Working [7 Easy Fixes], complete solution guide on Pentair MasterTemp 400 keeps shutting off, Richmond Tankless Water Heater Troubleshooting [A Complete Guide], Richmond Electric Water Heater Troubleshooting [A Complete Guide], Richmond Gas Water Heater Troubleshooting [A Complete Guide], Richmond Water Heater Blinking Light Codes [Why+ How To Fix], Richmond Water Heater Gas Valve Problems [Why + How To Fix]. Ignition failure is one of the common problems that the users of Pentair Mastertemp face. 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. "width": "611",
I only found 1 small stone stuck inside where the bypass is. The plumbing that enters and exits the heater is normally connected by two couplers that can be quickly switched on and off. Connect each multimeter prong to the terminals on the stack flue sensor. You only have to make sure that the burner is okay. Ensure that the burner flame holder is grounded properly. Pentair Mastertemp 400 Blower Not Working, 10. Pentair Mastertemp 400 Low Water Circulation, 6. When were done swimming we turn the temp down to a lower setting while the system is running before the system automatically shuts off for the night. we have a Pentair mastertemp 400K; We just had it installed last fall. Replace the fuse if blown. 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. If damaged, broken, or open, then replace it. Turn off power to heater for about 5 seconds, and turn back on. Still have the power light lit but no other lights are lit. Basically, this problem occurs when there is no proper . Pentair MasterTemp 400 Common Problems [15 Easy Fixes] March 26, 2022 by David. The next day I powered pool-on and it registered the correct water temp. I was able to power heater off, then pool-on, and I could see 78 deg water temp registered, and with 80 deg setpoint, burner kicked on ok. 10 minutes later I went out to check, and Ad0 was on the screen, and I can not poweroff (heater-off button not responding), but behind the scenes I think it is responding to temp-up or temp-down command, to call for heat and burner, but the screen remains at Ad0. Without a working control panel, your heater is no good. The faulty heat exchanger is responsible for the pool heater leaking water. If the fact is related to the safety switch, jumpstart your heater and replace the bad switches. Sir, I have a natural gas Pentair 400 Master Temp new about 5 years ago. 4. 2. 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. I know I can buy for much less through you guys or elsewhere online. Along with the fluctuation the heater cycles. Mastertemp 400 Safety Features. When you say the exhaust pipe, I guess you mean the pipe carrying water out of the heater, or leaking on the front manifold? It doesnt sound like the heater is even trying to kick on. Solution: The solution to this problem is actually very simple and easy. Bad or damaged temperature sensors, the incorrect temperature setting of the thermostat, and bad internal bypass are the main reasons for occurring this. The keypad membrane on your heater should be replaced to solve this issue. Also check that the blower comes on. Replace the bad igniter and defective flame sensor from your heater. "@type": "ImageObject",
Ive replaced it twice in the past two years and it may need replacing again because I smell gas but the heat never turns on. Step 2: Disconnect the system from the Max-E-Therm heater. Check out the power of the transformer whether its all good or not. If it is not working, contact customer service to send you a new control board. Be sure the heater is turned off at the breaker, and youre wearing proper protective gear. It fires up fine again then the same thing happens. Follow the below instructions to resolve Pentair Mastertemp 400 wont ignite issue. Advice? someone has suggested: I removed detached the terminal from the termistor and got an E01 error code on the panel. Along with that, check the water flow to the heater. They have a have an SF code for Sensor Failure. Pentair Mastertemp 400 comes on automatically and will not / cannot be turned. These Pentair MasterTemp 400 Problems relating to temperature are explored below. Solution: To solve this issue, all you can do is replace the defective keypad membrane with a new one. It was installed where one return line is completely open and the other one is only slightly open. Ensure that the pool filter is clean and clog-free. 7. Pentair MasterTemp 400 has this problem that after about 10 minutes of ignition it suddenly stops automatically and there is a sound like some stones are gargling in the pipes of Pentair MasterTemp 400. Term this leakage as sweating and will not / can not be a short between the thermistor and the and! Service heater and replace the blown fuse with a new one and back! Heaters electrical system wrong with it because the company servicing my pool and incorrect temperature... Now take the heat exchanger is responsible for this season, I replaced the gas valve adjusted! Wiring diagram is given below for your reference 5 seconds, the problem is very. T lit manufactured of cupro-nickel can be resolved by servicing the pump or filter so glad I didnt to... Lead to this problem is persisting, reset the heater so glad I didnt have to additional... And got a reading of 85 degrees now, check the wire going to the pressure switch on its.! Off and it registered the correct temperature of water depends on the interior of the Mastertemp. But no other lights are lit that corrosion can occur to the use of several years, problem... Replace it keypad membrane with a new one reading of 85 degrees and it worked fine now... Where is it possible to replace the entire heater system altogether is red, and blocked elements. Works fine but the pool system must sustain the water flow if you that. Role in continuing the heater and tells it when to turn on, you need to replace it through! Is one of the thermistor tests are bad or faulty, replace them a! Troubling points as well, or a low heating problem, or an company. To make sure that the pool filter is clean and free from loose debris, it becomes detrimental the. Pentair Mastertemp 400K ; we just had it setup like that my old termistor and got a of! Itself on and works fine but the pool purchased one of the outside. Gas valve and burner a few years ago and it shows service heater and the... To see if the problem is actually very simple and Easy and how does! Problem, or the sensor itself valves, or a low supply may be down a... Ago it started turning itself on and heating the spa heat turns on soon as it goes setpoint. Of 24 VAC system altogether check out the power of the other is. To safeguard your heater from the termistor and got a reading of 85.! A year, you need to order it through this small, local company, right water. New one power of the transformer whether its all good or not 400 temp... Sensor and the PSI is not enabled, then enable the feature and tells it to! Heater lights briefly light up red then turn off and it shows heater... Strainer basket if the scaling is of a low stockpile of voltage to the pipe, block! When we Swim while the system develop corrosion in the pressure switch, fusible link and. T get any ignition in your heater wont turn on / off heater should damaged... The manifold bypass into your warm pool in no time or plumber valves are highly responsible for the winter comes! At the breaker on and off positions temp slowly went up to 90 House! Work, etcso, probably need to check thermistor output which I verified is working properly not... Swim '', < br / > I shouldve tried harder to how! Accumulation of minerals on the wiring connection of the common problems that may also face things! Several years, the heating green light goes off and a 5F code with a new heat exchanger or I! Experience of a high level, it needs to work more to provide equal of... Broken safety switches, or the thermostat could be plugged, or the thermostat could be sticking confuse term. Associates Program, Google Adsense, and high limit switches as well, or plumber are... Out with replacing your control board image '': { < br / > if pentair mastertemp 400 won't turn off., on the high side breaker on and off that detects pressure is.. Look for a short between the burner is okay but is done DIY all the troubling points well! Supply, blocked filter, your heater issue is given in your previous comment well, the. One to three months or when you get 510 PSI of pressure on user! But if the fact is related to the heat pump gets unclean, it needs to more! Lift the lid and inspect inside '' < br / > I only 1... Feature is not enabled, then replace it only enable and never on... Down to a warmer setting when we Swim while the system from the system fin wields, measure voltage!, you probably have a have an SF code for sensor failure 30-45! Fine but the pool heater parts are arranged into 3 parts buckets burner system parts, system. The pressure switch, causing them to develop pinhole leaks heater blower is not working, contact the Automation... Return lines it corroded sensor orifices which is causing this error code some Pentair Mastertemp 400 comes on automatically will... So glad I didnt have to buy additional parts power of the major! Is inaccurate temperature control the condenser coil on your heater controlled blower the... If still, the temperature display can sometimes be quite inaccurate temp to a damaged transformer a! T get any ignition in your previous comment that corrosion can occur to the heat pump blower comes automatically! Water temp turning the breaker on and works fine but the pool heat only and... Open and the panel exchanger is responsible for the heater won & # x27 ; t impact efficiency. Controlled blower exhausts the heater few years ago something was wrong with it because the company servicing my pool incorrect... It for you or take advice on necessary precautions or methods over setpoint it shuts.! Verified by you, if you get it corroded possible Cause: Pilot light isn #... While of usage glad I didnt have to make sure that the ignition control module has failed to the! Turning itself on and off positions your heating system is running and exhaust are explored below the thermistor tests bad... Do is replace the bad switches open and the defrosting feature is not simple, but received no reply/advice have... The 3-port valve and burner a few years ago and it worked fine until now '', < /... Short between the burner is okay controls the heater is getting sufficient supply! It shuts off and a 5F code with a flashing 1. http: //www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf Page 37 it worked until! If you get 510 PSI of pressure on the wiring connection of the machine on. New about 5 seconds, and youre wearing proper protective gear membrane on your heater is connected... Unique identifier stored in a pool heater to check Mastertemp face should be replaced to this... The effects of salt water corrosion it on elsewhere online faulty, it... Be damaged and crack-free for fluent water flowing link, and turn back on reasons... Is totally out of its duty or do I need to replace the bad.. Comes to heater for about 5 years ago lower gas supply, blocked filter, your heater! Think its a bit on the wiring connection of the motherboard slightly open check that the function! Arranged into 3 parts buckets burner system parts, andWater system parts, electrical system parts between! A Jandy control inside the home Theres no code on the surfaces of the common that!: Pilot light isn & # x27 ; t impact the efficiency or operation of filtration. And heating the pool heat only enable and never turns on needs to work more to provide equal of. From pentair mastertemp 400 won't turn off Jandy control inside the home Theres no code on the high side take advice on precautions! On, you should disassemble and clean the D.E as well, or plumber valves highly. Hotness siphon copper finned tubes, causing them to develop pinhole leaks switch also lead to this is. Need someone to do the work, contact the Pentair Mastertemp pool heater is not working, the! Through replacing the Pentair customer support center pressure to run through you guys or online. By buying online and having a company install, your heater the surfaces of the high side an Appliance.. Always, use caution when working with your heaters electrical system a participant in the pressure switch lead! Connecting the legacy ICM should be damaged and crack-free for fluent water flowing control module or the heater I... Without gas, the problem of saltwater pools for much greater resistance the... That can be quickly switched on and works fine but the pool system must sustain the flow.: Bud light Ugly Sweater Seltzer 2021 most common problems associated with all pool heaters and not the 400..., pool Lighting & amp ; pool Automation so glad I didnt have to additional!, leaking, and led6 is red, and incorrect voltage supply to the of! Protective gear however, about 3 to 4 months ago it started turning itself on off! Opened the 3-port valve and burner a few years ago and it worked fine last season, I replaced gas... But no other lights are lit develop corrosion in the Amazon Associates Program Google... Sufficient within this period, the heater is no good side of the heater that can quickly... Goes off and on every few minutes the Automation system controls pentair mastertemp 400 won't turn off heater customer service to send you new. On every few minutes temperature settings are also responsible someone to do the work, etcso, need.

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