C. ctipton New member. After a lot of cleaning, I’ve got it wired up and functional, but I’m running into a very strange issue. Is it the High Limit switch malfunctioning or is it the Temperature sensor? Tech support has been busy for some time now. The front panel just has the Heater Service light on (and displays the current water temp). How to Troubleshoot Swimming Pool Heaters. Pentair uses state of the art workmanship, materials and manufacturing processes to create the most innovative pool and spa equipment anywhere. … Content Retrieval. Found the fix for this is to take the motor apart (follow youtube how-to's) and remove the spider webs from the internal cooling ducts of the motor. Will not stay lit. That's right; gas pool heaters are useful at any time of the year and usually need to be run for less time, meaning less wear on the equipment. Replaced temp sensor, no difference. Heater ignites but MAIN PCB 1.Wrong pump pressure 1.See Pump Pressure Adjustment, Then turn power switch to Heater will not turn-on “ON” position. I just lit my heater for the winter, and it will come on for a few minutes, heat the house, then turn back off again. If you need more information on the Sta-Rite pool heaters, especially questions or concerns regarding installation then I suggest you call Pentair directly. Pentair MasterTemp 400 natural gas heater won't ignite. In this case, seek help from a technician. Wont turn back on to heat pool. As easy to use as your home heating system, plus, user-friendly LCD display and troubleshoot icons make system operation and monitoring a snap. service system & service heater lights are off heater set p … That does not seem to be the cause. Replaced a leaking pressure switch 2 years ago. It's almost 2 years old. Pentair 250. It ignites the heater, but heater goes out after about 5 seconds. The main reasons that a gas water heater automatically shuts off are because the pilot light goes out, the pilot light can’t start, or there are problems with the gas supply. Post by bmanino » Fri 30 May, 2008 11:24 . SPA temp is set to to 102 degrees. Water Temp 79. Dirty Thermocouple. Menu. Heat pump troubleshooting guide for Pentair pool heaters. spa light is on. Pentair Mastertemp 400 Heater shuts off after a few minutes of heating. The heater only ran about 2-3 seconds before I shut it off,and the pump 4-5 seconds. Otherwise, you can use a multimeter to check if the thermostat is receiving power. Don’t make assumptions, just call and find out the facts. My Spa / Pool Heater just began to shut off at 97 degrees. I checked the pressure switch and I cleaned the pool filter already with no success. Once it cools down, it starts back up again. The control board has the AFS LED on and also LED 11. Blower will start, run for about 1 minute while igniter burns, then flames are ignited. Compare this list of features to any other and you’ll see why MasterTemp gas heaters are setting a new standard for total value. Possible cause: Thermostat. In normal weather it works ok, but when it’s raining out (that’s my theory anyway), the heater won’t stay lit. West: 213-291-9276 Southwest: 480-719-4511 Midwest: 312-229-0026 Northeast: 631-223-7175 Southeast: 954-866-1644. Designed to efficiently heat any size pool or spa, a Pentair gas pool heater will have your warm the water to your desired temperature in a hurry. If you see ice on your outdoor unit, this may indicate a refrigerant leak. My issue is that when I push the pool/spa buttons, it turns on the blower and then just as the heater ignites, the service light comes on. Furnace clicks, ignites a flame and then shuts off - stuck in a loop! When your swimming pool heater malfunctions, troubleshooting the source of the problem can be more complex than working with filters or … I’ve got a Pentair MiniMax 100 natural gas spa heater. Check the Thermal Reg in the header and also make sure you have adequate water flow thru the heater, make sure your filters are clean and there are no external by-pass valves open. And now Pentair products can deliver even more value and peace of mind, because Pentair offers extended warranty coverage on select products that are installed by a qualified installer*. If increasing the temperature makes the heater turn on, then the thermostat is in good condition. You don’t need a fancy test meter to troubleshoot a pool heater. Close. Techno-Solis … Jun 22, 2017 3 Friendswood, TX. Everything Else. Laars LX 400 Pool Heater will ignite and burn for about 5 seconds, then shuts off. When the heater is turned on, the blower starts, and the heater ignites. reply. The heater will kick in as expected right after the switch is flipped but after about 45 seconds or so, the "Service System" light goes on and the burner shuts off (but not the blower). If your heater comes on then shuts off, call in the experts at Howard Air in Phoenix . Reply. Heater will not start. It’s new to me, but approximately 12 years old. Top. This problem started today, the motor comes on, about 20 seconds later I can hear a clicking and the sparks rattling away, it seems to ignite a pilot flame which burns for a 2 seconds and then it shuts off. After about 45 seconds, the red service light goes off, the green "Heating" light flashes, and then the burner kicks in again (the heating light goes solid at that point). And it does the same thing all over again. I feel heat coming out of the exhaust for about 20-30 seconds and then it basically stops. The old heaters used to come with a pressure relief valve - its probably a good idea to install one on your heater. Thread starter ctipton; Start date Jul 23, 2017; Forums. 0 Answers Fan comes on but no lights on panel. Call Us Nationwide: 1 800-741-9956. I have been experiencing problems with an h series hayward heater. set temp to pool on 90. Call Anytime 480-648-0055. After starting, the Service Heater light lights up. Set temp to 100 waited 20 minutes now nothing and help would be a nice help. Check the Thermal Reg in the header and also make sure you have adequate water flow thru the heater, make sure your filters are clean and there are no external by-pass valves open. Jul 23, 2017 #1 I am struggling with how to fix my Pentair Mastertemp 400 heater. Trustpilot. Pentair Pool Heating Rapidly Increases Temp on Panel then shuts off. Then after about 15 seconds it shuts off. Book Appointment Now. Here we look at what you can do to get to the bottom of this issue and make your hot water supply more reliable. I cycle the heater (holding the on/off button for 10+ seconds. The unit ignites for about 3 seconds then shuts down, then it tries to fire up again and again with the same result. Heater turmed on then one minute later turned off says 79 on display. If you have a refrigerant leak, your system is going to have trouble with the heat transfer. The igniter is fairly new, I replaced it myself a few years back. AquaCal says: August 3, 2015 at 1:32 pm Good morning Mr. Jacobs, Sounds like you need to have someone … Solution: Make sure your thermostat is set to a higher temperature than your pool water. No matter what you’re seeking in your swimming pool heater, the MasterTemp gas heater measures up. I have a Jandy LX400 Natural Gas Heater. Tried jumping pressure switch, same problem. Back. Flames stay ignited only for about 5 seconds then gas supply shuts off. Post by ozzzie3 » Sun 24 Aug, 2008 11:37 . Browse Heaters. Works OK at start up, fires up and runs for about minute 30 seconds and then start to hear gas valve clicking shutting off and on rapidly. Mark . I had the heater running once this season prior to now and it ran like magic for 24 hours. Pentair Pool &... | Posted on Mar 29, 2018 | Be the first to answer. Gas swimming pool heaters are often preferred by pool owners. Inadequate water flow or malfunctioning pressure sensor. Cart is empty. I have backwashed and even chaged the pressure switch. Even if you haven’t purchased this pool heater yet, you can ask them questions to help you make your buying decision. Your heater always works except the day you have invited a potential sexy significant other over to use pool … Pentair Garden | Posted on Mar 31, 2018 | Be the first to answer. Posted by 1 year ago. Very compact design for such a high performance gas heater, allows for smaller overall equipment pads that won’t intrude on your poolscape. After about 15 seconds I hear a clicking noise then the heater light stays on for about 5 seconds, then starts blinking again. New igniter assemble is working fine. If you remove the Thermal Reg in the header and the heaters seems to run fine the replace with a new one. It seems like it heats up the house a degree, then shuts off, then turns back on a few minutes later, heats the house a degree, then shuts off, and keeps repeating this cycle. Features. Had this problem of the Hayward pool pump overheating and then auto-shutting off in a cycle. The compact design and super-quiet operation won’t intrude on your poolside leisure time. Pentair MasterTemp 400 K heater Pool filter clean, strainers clean, good water flow to pool and spa. Gas pool troubleshooting can be tedious when the problem isn't easily recognized and needs a thorough investigation and it might be required for this issue. If your heater comes on then shuts off, call in the experts at Howard Air in Phoenix. A furnace that starts and shuts off over and over again is often described as short cycling. Pentair Pool Heating Rapidly Increases Temp on Panel then shuts off. Archived. 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