Also could possibly have circuit board problems. Check out the power supply to the pressure switch, fusible link, and high limit switches as well. When the heater temperature exceeds the safety level, it activates and shut down the heater. In case there is blockage in the heat exchanger, how do I fix that? Enquire about how much voltage is being supplied to the heat pump. An HVAC company would install it as well, or an Appliance company. It does heat the spa about 1 degree every cycle. Test the resistance of the pressure switch. Combustion appears normal, but the flame does not stay lit. In your opinion, is my board again wet, or is my board damaged (perhaps by moisture) and needs replaced? Sometimes, a clogged water filter restricts the water flow and overheats the heater. You will get much more visibility by. Use a heat exchanger made of cupro-nickel to resist corrosion. Due to the use of several years, the alkalinity levels and the low pH levels can erode the walls of the tube. The thermal regulator should be in fine working condition. Possible Cause: Gas supply valve. A clogged filter or pump basket can build resistance to water flow to a degree that your heater cant operate as usual. Again, if it is displaying a lower temperature, the heater may keep heating even if the water is hot enough. Thank you! Inaccurate Temperature Control or Display. 2. spa light is on. The heater itself will adjust up to 104 on either of the pool or spa settings. Advice? The output of the transformer should be between 24 to 28 volts. Also check connections on the on/off switch and thermostat, or look for any crimped or damaged wires. Make sure that the air coil is being sprinkled upon during cooling. The following are some of these issues and their solutions: These are the possible solutions for this issue. If no ignition, I turn off, wait, then re ask for heater. The automation system controls the heater and tells it when to turn on / off. "caption": "In The Swim Blog"
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. View online or download Pentair MasterTemp 400 Brochure. Check out the thermal regulator as well. Finally, set the thermostat temperature correctly. Otherwise, it will be difficult to verify. It worked well for the last 3 days. Sir, I have a natural gas Pentair 400 Master Temp new about 5 years ago. It cycles for a bit then I hear a click either it fires off or it doesnt. Sometimes, blockage in the pumps strainer basket creates water flow restrictions. The temperature should always be higher than the pool heater. MasterTemp is engineered for super-quiet operation and won't intrude on your poolside leisure time. It will be tough for the heater to function correctly with lower water levels. "address": "",
For that, clean out the gas orifice and burner system. Voltage checks have the potential for a lot of danger. It was installed about 3 years ago and there haven't been any problems. These problems could lead to build-up oflime scaleinside the copper tubes, which renders the heat exchanger useless and requires a replacement. When we turn the temperature down before the pool system shuts off for the night the next morning when the systems turns on the temperature is back up to the previous higher setting on its own. Eco-friendly, MasterTemp is certified for low NOx emissions and outperforms industry standards. The heater manifold, and also the water flow sensor, and the Thermistor connections may be getting wet. Traditional gas heaters ignite horizontal burners at the bottom of a square combustion box. There are some common temperature issues that users face. 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. Any new postings here are unlikely to be seen or responded to by other members. If the automatic gas shutoff switch has tripped, you need to reset it. Already known as being dependable and efficient, MasterTemp now offers smart features and an optional energy-saving Smart Bypass Valve Kit to help you ensure your pool is ready whenever you are. Turn on the resistance testing mode on a multimeter. Hi Check the thermal regulator kit, to be sure that it is not bypassing too much water, or not bypassing enough. Pentair Pool Support 1-800-831-7133. If you are sure that the heater is getting power from the outlet, examine the fuse inside your heater. What can cause your Pentair MasterTemp 400 blower not working is a bad blower motor or a defective control board. Older style heaters use a low horizontal manifold that supplies dozens of individual burners across the bottom of the burner tray, shown at left. Using a multimeter, check the voltage measurement on the pressure switch. Unfortunately, the only way to solve this issue is to get a new heat exchanger. Here we have elaborated on all the troubling points as well as the fixing steps. 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? Along with the fluctuation the heater cycles. If still, the problem is persisting, reset the heater by turning the breaker ON and Off positions. A pool technician replaced 3 sensors however it still does not work. So, I opened the 3-port valve and adjusted it where the 2 return lines are fully open. The heater worked fine last season, I replaced the gas valve and burner a few years ago and it worked fine until now. Thanks for the help. Once clean, put the filter back together. So I thought that was causing the problem. Pentair Mastertemp 400 Heater Not Turning On, 2. Replace the bad igniter and defective flame sensor from your heater. See if the igniter fires when you turn on the heater. Installing a pool heater is not simple, but is done DIY all the time. 3. Read our Pentair MasterTemp 400 troubleshooting guide to fix your heater ASAP. Easy troubleshooting and repair. Replace the defective parts. 38. 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. Hello, I have a Pentair Mastertemp 400 that starts heating the spa but then shuts off and on every few minutes. This situation affects several parts of the heater, including valves, leaking, and blocked heater elements. Make sure that the filter of the heater is cleaned as well. If water is moving through the heater, the thermocouple or auto-start igniter system is not functioning properly. The heater does not ignite. 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. 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. In case you have any queries regarding your Pentair MasterTemp 400, leave us a comment. If the heater stays running with the pressure switch bypassed, then see what can be done to improve flow rate. Replace the bad switches. When your heater isnt automated but you find that it is turning itself on, you probably have a bad keypad membrane or control board. Step 2: Disconnect the system from the Max-E-Therm heater. Articles and resources for swimming pool owners and DIYers. Pool heater failing to ignite gas. Hello We are a registered 501(c)3 non-profit that is funded by user donations. Clean up all the flue sensor orifices to ensure there is no grime on them. Unscrew them to take the ICM off the heater. Here are the video links. Solution: Alter the chemistry of the water and reach an equilibrium. The heater should be set at 104 and let the automation do the rest. My heater also powers up, displays lights, without anyone touching it. Follow this video below for instructions on Pentair MasterTemp 400 control board replacement. people are struggling with the DE pool filters, Hot Water Is Dripping Through A Coffeemaker: Reasons And Solutions. When the gas flow shuts off due to the faulty pressure switch or low flow rate, then your heater will face this issue. Very low pHand alkalinity levels over several years can strip the copper from a heat exchanger and wear the tube walls paper thin. Close the external bypass if open. To maintain optimum pH and alkalinity levels, regularly check up on your Mastertemp and make the required updates or changes that may be required. Broken safety switches, faulty transformers, and wrong temperature settings are also responsible. It means that the ignition control module has failed to ignite the heater. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. The exhaust pipe is leaking water. Contact customer service and tell them about the issue. If damaged, broken, or open, then replace it. I had to turn off . You need to see the actual temp on the heater. This kind of damage can be very costly. In case the burner is broken, remove it and replace it with a new one. 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. The Pentair Mastertemp 400 is a heater that is used to warm water in swimming pools, as well as in spas. The main reason behind Pentair Mastertemp won't turn on is the automatic gas shut-off. So, here we will look at some issues and their solutions. . In case the wiring is good, you probably have a thermistor that needs replacing. February 9, 2023 by William. Replace the bad board. If the voltage is not optimum or the required level, the Mastertemp 400 wont turn on. When your heater wont turn on, you probably have a blocked filter, tripped safety switches, or a defective control board. It mainly happens if the discharging of the flow of air has been blocked or restricted. I have a Pentair 400 mastertemp propane spa heater. When it used to work I would hear a big kaboom sound and now nothing. Replace all the defective ones. It is old and a bit rusty and loud. It continuously bounces between pool and spa. Pentair Mastertemp 400 common problems include displaying the wrong temperature, low water circulation, leaking water, water scaling, and corroded heat exchanger. It 'rattles' 3 times, doesn't - Answered by a verified Pool and Spa Expert . No code is present. This residue is usually formed at the bottom. 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. The main function of the HLS on any pool heater is regulating the water temperature of the unit. The Thermal Governor has become jammed and is unable to open. This means that the cleaner also won't impact the efficiency or operation of your filtration system. Email Us. This problem has a very basic and straightforward fix. A local pool service expert suspected the electronic control board may have gotten wet (we have had a good deal of rain here in northeast ohio recently) thus the odd error messages that I can not find in the owners manual. However, about 3 to 4 months ago it started turning itself on and heating the pool. I know I can buy for much less through you guys or elsewhere online. Check out the power of the transformer whether its all good or not. First, check the condition of the temperature sensor whether its good or not. Thank you Frank I think its a bit on the high side. Dont ignore the strainer basket near the pump. Heat pump troubleshooting guide for Pentair pool heaters. Pentair Mastertemp 400 comes on automatically and will not / cannot be turned. 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. They usually cannot be fixed. I also noticed that the flap wasnt opening even at 3450rpm and 20-25psi. 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. Check the wire going to the sensor and the sensor itself. Follow the below instructions to resolve Pentair Mastertemp 400 wont ignite issue. 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. Solution: Servicing on the pump or on the filter will fix this issue. Gentlemen, Ensure the correct temperature of the thermostat. Pentair Mastertemp 250 turns on automatically. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. After just a few minutes on heating, the burners shut off, before the water is warm. If needed, hire or call a dealer to check it for you or take advice on necessary precautions or methods. I only found 1 small stone stuck inside where the bypass is. This problem needs to be fixed ASAP. Pentair Mastertemp 400 Displaying Wrong Temperature, 3. Save my name, email, and website in this browser for the next time I comment. Pentair MASTERTEMP 400 HD Installation And User Manual (68 pages) POOL AND SPA HEATER (FOR OUTDOOR USE ONLY) Brand: Pentair | Category: Heater | Size: 10.86 MB. After persisting in this issue, you will hear a sound like a bumping sound from the heater. Thermal Governors are used to maneuvering the cooling fans that can either be on or off. So you could save $1000 by buying online and having a company install. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Our Pentair MasterTemp troubleshooting guide starts with the error codes shared by both models. Assuming the voltage isn't ideal or the necessary level, the Mastertemp 400 won't turn on. The Pool company said that it is probably condensation. I have a MasterTemp400 unit that has been in place since about 2010, wherein the "Heater Off" button won't turn the unit off. This problem can be resolved by servicing the pump or filter. We have a new Pentair Mastertemp 400 unit that we need direction on correctly setting the temperature. The sensor is operating if the resistance is 3.5 ohm or above. Learn More. Boiling in the heat exchanger might be caused due to a variety of reasons. You May Like: Bud Light Ugly Sweater Seltzer 2021. You may be able to troubleshoot the thermostat, or bypass it with a jumper wire, to determine it has failed. Once you remove the cap pull out the spring and the regulator will be at the end. My Pentair 250 heater will not stay on the pool setting. Hopefully, now you have a crystal clear idea of each of the Pentair Mastertemp 400 problems. Is it possible to replace the heat exchanger or do I need to replace the entire heater system altogether. As always, use caution when working with your heaters electrical system. Any suggestions? There can be an issue with the fuel supply, thermal regulator, or the sensor orifices which is causing this error code. I then reconnected the terminal on the new terminstor and got 75 (I guess thats the water temp). Their solutions problems could lead to build-up oflime scaleinside the copper from a heat exchanger made of cupro-nickel resist... 400 Mastertemp propane spa heater much voltage is being sprinkled upon during cooling working is a bad motor... 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