Hi Hugh, is it a Hayward heater? The burner is located in the center of the combustion chamber, wrapped by the circular copper heat exchanger tubes. Pool is not getting up to temperature. Check to see if a phase is out. Same issue continues. 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”. So, I opened the 3-port valve and adjusted it where the 2 return lines are fully open. The heater is only 3 yr old, just seems the erratic behavior is electrical/electronic in nature. Keep your hands and hair clear of the fan blades to avoid injury. However, it isn’t ALWAYS the case. Use a pool cover. It's basically a little plug with two wires that screws into the inlet pipe inside the heater, lower right side. The Pentair MasterTemp pool heater adopted the sealed combustion chamber with controlled exhaust design. Thank you – Frank Compressor contactor is stuck open. 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. Low or restricted water flow through heater. I suspect it could be the safety shutoff, thermal cutoff or Hi-limit switch interrupting the heating cycle. It doesn’t sound like the heater is even trying to kick on. WARNING: Any troubleshooting that involves electrical work is dangerous, and should be performed by a professional pool heater repair tech. Make sure external water bypass around heat pump is closed. Our Price: $110.58 . Make sure that your sprinklers DONOT spray on the heater in any way what so ever. Kindly help. I suspected my pool heater wasn’t working because the old membrane shorted out after all the rain we got this year. Spa will not heat to maximum temperature of 104°F. The water pressure switch should be adjusted to turn the, heater off when the pump is off. Fault Condition:  HIGH WATER TEMP Alarm: Water temperature above 108°F. Return the warranty registration card after filling in the serial number from the rating plate inside the heater. Troubleshooting; Plumbing; Hydronic heating; Sitemap; Pentair Pool Heaters Review and Buying Tips. The board may be ‘fried’, but do a complete power down, at the breaker, pull open the control panel, and inspect, clean the area, and look for signs of water intrusion. I sent the following on May 23, but received no reply/advice. Faulty Compressor. The Burner System of the MasterTemp/Max-e-Therm heaters is one single burner, called the Flame Holder, shown right. Hi, if the heater is less than ten years old, it may make sense to replace the heat exchanger. Shaded pool area. Call the factory for advice. Low water flow when switched t. Corrective Action: Verify water pump is on. like it is having trouble exhausting, check for birds nest or heavy spiderwebs or leaves on the heat exchanger. too cold. If (1) does not work, recover the charge, remove bulb from SL, unscrew TXV head, shake it, if rattles, replace head (PN KT-45-ZGA), if not, replace TXV and filter dryer and charge appropriately. 2020 Poolheatpumps.com. Replace either one if it is faulty. Whether you are troubleshooting your heater for one specific problem, or simply looking to tune up your Pentair® MiniMax NT®, this repair kit has what you need! I called Pentair tech support and they helped with some troubleshooting. We have 1 Pentair MASTERTEMP 125 manual available for free PDF download: Installation And User Manual . Find source of refrigerant leak and fix. Automatic pool vacuum causing restriction Reclaim charge. My heater also powers up, displays lights, without anyone touching it. ... Pentair MasterTemp Pool Heater 200,000 BTU Natural Gas Low Nox 460730 Pentair MasterTemp Heater 250,000 BTU Natural Gas ASME Sale Price: $1,874.00 . ******************************************************** Adjust Plumbing valves. Incorrect wiring. There are other factors that can actively contribute to your heater’s … Check supply voltage to the heat pump. Inspect & clean pump impeller. Minimum flow 30 GPM. So far I have replaced the thermal regulator, igniter, thermistor and the bypass valve in the manifold. They said the 126 display was an error code. Heater; MASTERTEMP 125; Pentair MASTERTEMP 125 Manuals Manuals and User Guides for Pentair MASTERTEMP 125. Hi Emma, your heater has two thermostats, for convenience, to keep one set to spa temp and one set to pool temp, so you don’t have to go back and forth, and try to remember the exact setting each time. I look forward to your advice. It kept doing this several times and then sometimes the temp will start counting up rapidly and slowly counts down to the current temp and cycles again. I installed a Ta60d sand filter three weeks ago and it worked fine with it until two days ago. 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. SFS is stack flue sensor. The MiniMax 100 pool heater is sold with a limited factory warranty. Take a closer look at where the water originates. Did you replace both Hi Limit Switches? Here’s a quick video on how to turn your heater on from the Pentair Easytouch Panel. We carry spare parts and service these regularly. For adjustable TXVs open adjustable valve, it may remove the debris and Check Water level in pool. Air and water temperatures too cold to operate the heat pump. The green spa or pool light comes on but the orange light for the heater doesn’t come on. Faulty Compressor contactor. Place a wind break around pool. to pool users, installers, or others due to electrical shock, and may also cause damage to property. 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. Improper plumbing valve settings. The next day I powered “pool-on” and it registered the correct water temp. Leaking heat exchangers are often confused with sweating or condensating heat exchangers. Still have the power light lit but no other lights are lit. Call dealer or factory for advice before attempting to replace parts. Savings: $157.00. Your swimming pool heater heater will only work if the pump is on. BROWNOUT Alarm: The 24 VAC supply voltage to the control board is low. 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. 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. Page 42 Troubleshooting RAPID CYCLING If the heater fires, shuts down and refires every 30-45 seconds and the Service Light comes ON and goes OFF alternately with the Heat Light, this indicates that the Inlet or Outlet High Limit Switch is sensing a temperature greater than 115° of 150° F., respectively. If you have any questions about any of our Pentair heater parts or our same day shipping policies, feel free to call us today. Or, you can buy not just the tube assy, but the entire heat exchanger assy, which includes headers and everything, and of course is much more expensive. Recharge with appropriate nameplate charge. 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). WARRANTY INFORMATION The MasterTemp pool and spa heater is sold with a limited factory warranty. Pool is not covered. Adjust all plumbing valves. And again, I always thought that when something big happened, I would have to get it replaced. http://www.haywardnet.com/pdfs/uhs-heater-troubleshooting-guide.pdf Page 37. They have a have an SF code for Sensor Failure. PENTAIR HEATER BURNER TROUBLESHOOTING: The burners on this type of MasterTemp/Max-e-Therm heater are quite unique from previous generation pool heaters. The 2nd is after modified the 3-port valve to the return lines. What else can impact the temp reading? Check resistance of switch with a full charge, if open, replace switch. Improperly installation will create an electrical hazard which could result in death or serious injury That’s 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. Our Pentair Mastertemp Troubleshooting Guide starts with the error codes shared by both models, and follows into a 6 page flowchart to step by step troubleshoot a Pentair or Sta-Rite pool heater, and get it firing again fast! Pentair Pool & Spa - Recent Questions, Troubleshooting & Support . Adjust all plumbing valves. Bad refrigerant low pressure switch. Sounds like a ghost in the machine! No Alarms. No Alarms. Verify filter is clean, backwash if necessary to clean entire filter system or replace filter element if needed. appliance. It is very cold outside. Thank you for your time and response. Troubleshooting the stacked exchanger type of heater is not much different than other electronic or digital pool heaters. 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 won’t come back on. Possible malfunctioning of the internal low refrigerant pressure switch. 4. WARNING  RISK OF ELECTRICAL SHOCK OR ELECTROCUTION. Frank. Faulty Fan Relay. The outside air temperature too low and Defrost feature is NOT enable. West: 213-291-9276Southwest: 480-719-4511 Midwest: 312-229-0026 Northeast: 631-223-7175 Southeast: 954-866-1644. b. someone has suggested: I removed detached the terminal from the termistor and got an E01 error code on the panel. Check Alarm Status on Control Board for LOW REFRIG Alarm. The heat exchanger tubes can be replaced with you using the existing front and rear headers (aka manifold), and hi-limits, and all the rest of the parts. in 1995. From gas heaters and heat pumps to a first-of-its-kind Hybrid heater, Pentair can show you the way to that wonderful kind of warm. Our Price: $3,093.00 . Heater will not turn off and a 5F code with a flashing 1. All our heaters deliver fast heat-up times, low operating costs, and long life. Faulty Fan Motor. Adjust all plumbing valves. Repair suction air leaks, grease pump lid o-ring. Thanks for your help! Ever taken a dip in a pool so cozy it felt like the water was hugging you? need any more information, or if you have any questions regarding to this pool heater, please contact Pentair Aquatic Systems at (800) 831-7133. If bad, replace thermistor. Pentair 470550 Burner w/Pilot Bracket . Clean entire filtering system and or replace filter element. Outer air coil clogged with debris. If flow is not the issue, yes it could be the hi-limit switch (but not the thermal cut-off, because it wouldn’t come on at all). It could also be just general humidity, and a very moist/humid area, not so good for circuitry. Although, there’s strong water coming out of the 2 return lines. Incorrect wiring. Hello. Call your dealer for advice. Let us know if you need help finding it. 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. Repair suction air leaks, grease pump lid o-ring. As easy to use as your home heating system, plus, user-friendly LCD display and troubleshoot icons make system operation and monitoring a snap. Transformer should output between 24 and 28 volts. Fault Condition:  LOW WATER TEMP Alarm: Water temperature below 40°F. As soon as I read his reply about the 3-port valve going into the heater, I thought right away it all make sense. I think it’s a bit on the high side. Welcome to PoolHeaterStore.net. Is the filter or baskets dirty, or impeller clogged? Also make sure the gas or propane valve is turned to on as well. When problem started happening last early last year, one of the thing I did was replaced a broken Jandy check valve between the heater and chlorinator. I also noticed that the flap wasn’t opening even at 3450rpm and 20-25psi. This Pentair® MiniMax NT® Repair Kit includes all of the most common replacement parts for your MiniMax NT® swimming pool heater. Pentair MasterTemp pool heater parts are arranged into 3 ‘parts buckets’ – Burner System parts, Electrical System parts, and Water System parts. MiniMax Plus Manual (Acrobat Reader Required) Sort By: Page of 4 : Pentair 470190 SWITCH PRESSURE MMXPLS . Unit is plumbed backwards. Suction leak allowing air into the water flow. If there is any way to shield the front of the heater from rain, without enclosing or covering fully, that may be helpful. Fan is NOT Turning. Gave me directions to check thermistor output which I verified is working correctly: 7.7K ohms for 89 degree water. I replaced the thermistor and still have the same problem. 1. Specific details are described on the back cover of this manual and a copy of the warranty and warranty registration card are included with the product. Use a cover while heating the spa. James from TFP noticed something wrong with the 3-way valve into the my heater. 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. Repair suction air leaks. Call dealer or factory for advice before attempting to replace parts. Fill out a contact form to get a personalized response from our pool heating experts. Low water flow when switched to spa mode or the control is not in spa mode. Control Board Failure. Replace filter. 1. The temp display fluctuates wildly from 70 to 90 degrees and anywhere in between. Possible Cause: 1. I run the heater and this time it did something different. Internal bypass valve damaged or clogged with debris. Our Price: $157.37 . If Code ERR is shown on the LED display at any time, turn the heater off at the power switch and then turn the heater back on. Troubleshooting the stacked exchanger type of heater is not much different than other electronic or digital pool heaters. So don’t hesitate and keep reading to learn! To Clear this condition, cycle the heat pump on and off up to 3 times. 2012 - Hello heat from the surrounding air and transferring it into the water. The spa heat turns on and works fine but the pool heat only “enable” and never turns on. Replace Control Board. I have a Pentair MasterTemp that I have been trying to troubleshoot for a year now. Verify external water bypass around heat pump is closed. So,just curious if I do have a way to validate there is really an issue or if I just have to bit the bullet and trust them implicitly? Do NOT attempt any internal adjustments inside the heater. I have a Pentair Master Temp 300 Pool Heater that is 6 years old. If ice forms on the outer coil, shut the heater off and allow ice to thaw. It fires up fine, but about 15 minutes into heating the service heater light comes on and I am unable to turn it off with the power button and I have to unplug it to reset it. I have a MasterTemp 200. The MiniMax pool heater design is no longer being made by Pentair, but parts will continue to be manufactured for years to come, so fear not if you have a Pentair Minimax, which shares a common gas pool heater design with other brands like Hayward and Raypak. It worked well as usual, heated water to 85F as commanded. The Pool company said that it is probably condensation. Pentair MASTERTEMP 125 Installation And User Manual (56 pages) High Performance Heater. Thank you. Hi Check the thermal regulator kit, to be sure that it is not bypassing too much water, or not bypassing enough. I know I can buy for much less through you guys or elsewhere online. Of course, there is also an internal bypass in most gas pool heaters. 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. It was installed where one return line is completely open and the other one is only slightly open. This is accessed thru the end cap, two bolts on the side of the header. Pentair MasterTemp Pool Heater 400,000 BTU 461021 - ASME HD Cupro-Nickel Pentair MasterTemp Low Nox Heater 400,000 BTU Natural Gas 461021 ASME with cupro-nickel heat exchanger. Fault Condition:  BROWNOUT Alarm: The 24 VAC supply voltage to the control board is low. If the error code is still displayed, call a certified Pentair Service Technician for repair.We write blogs like this one to help pool owners save as much money as possible. Older style heaters use a low horizontal manifold supplying dozens of individual burners across the bottom of the burner … Corrective Action: Supply voltage to the transformer should be between 208 and 260. volts. Pentair Mastertemp gas heaters are a compact High-efficiency gas pool and spa heater. I should’ve tried harder to learn how the pool works. You have to power off to get board unlocked. Greetings Mr. Merino – I opened pool 2 weeks ago, but only started heater last weekend. Products; Manuals; Brochures; Resources; News; Dealer Resources; Home >> Manuals >> Heaters You can look at our heater parts pages, and see prices for your make/model/size heater. Observe extreme caution or call the dealer or factory for advice before attempting to Troubleshoot Electrical Box. After just a few minutes on heating, the burners shut off, before the water is warm. We use cookies to give you the best possible experience on our website. 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Reconnected the terminal from the termistor and got 75 ( i guess that s... | Category: heater | Size: 6.25 MB Table of Contents 2004 pentair pool heater troubleshooting Pentair can show the!