Over the past week, the heater fired up and heated just fine. The unit must be plugged into. So, I opened the 3-port valve and adjusted it where the 2 return lines are fully open. Houzz Pro: One simple solution for contractors and design pros. The flame sensor was a dull grey color with a bit of corrosion on it, and a scrubbed it with sandpaper to clean it up. The heater only comes on if its turned all the way up. Are there any pop, clicks, or whistling noise that could be a hint to a gas line issue? I don't think that he did until just before it started working again. If the heater has been off for a long time, (more than one week), wait 3-5 minutes prior to firing the heater to give the pilot generator enough time to heat up. I then reconnected the terminal on the new terminstor and got 75 (I guess thats the water temp). Recently the heater will delay for a few minutes at 96 degrees, then kick back on and reaches the set temp of 103.

Any other suggestions? Any idea why the delay in the heater? We are a registered 501(c)3 non-profit that is funded by user donations. All indicator lights go out and nothing I do makes them light up. Thank you both for the response. Is there a common thread between the times it does/doesnt work? Any thoughts? One minor problem can get real expensive real fast and Lawyers don't care if you were "only helping a friend". Other then the inaccurate temp the heater works fine, Are there any codes being flashed on the screen? Does it not work on especially warm or cold days? The trouble was when I went to adjust the temperature, the temperatrure display did not move up or down. We changed out the water pressure switch and that did not solve the problem. I got this piano in my old house; not the Yamaha I would have liked, but spending $25K on a baby grand wasnt in the budget! Pressure testing gas lines may seem like an easy job, but to do it properly requires the right equipment and knowledge of what you are expecting to see. No shocker there. Then when he left the heater started working! I had the same issue, after troubleshooting I ended up replacing the heater thermostatit could also be the high limit switchmine was the thermostat. A spring cleaning is not expensive and will certainly help to resolve minor issues. I only found 1 small stone stuck inside where the bypass is. Note: when the opened the manifold last winter to replace the bypass, the manifold and the heat coils have no signs of scales. I have a Pentair mini max 100 heater hooked up to a cedar hot tub. It may not display this or other websites correctly. If the PSI is too high, clean your filter. When I fire up the heater on Pool mode it begins to heat normally but after about 5-10 minutes (and even sometimes after 20 minutes) it moves over to Spa Heat mode (which I dont have a spa) and shuts down the 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. Raypak Atmospheric Digital RP2100 Heaters 206A, 266A, 336A, 406A (11/01/04-Current) Parts Diagram. In order for a heater to operate smoothly and efficiently, its important that pool system maintains a consistent flow of water. Haywards troubleshooting process relies a lot on flashing error codes, but they arent much help when either of the boards is out. Your email address will not be published. Pentair 470190 Water Pressure Switch Replacement Pool and Spa Heater. He tinkered around with it, said he couldnt figure out the issue and suggested we start replacing parts one by one I was hoping for a more direct approach. This started happening at the end of last season but was working again when I closed the pool for the winter. Set your thermostat to a higher temperature. IO Igniter open error If the control is not in lockout and senses that the igniter circuit is open when the blower is running the control will turn off the blower and go into lockout.

How are you judging the strength of this water flow? If the LO code still pops up after cleaning the filter, refer to the below troubleshooting info: I have a Hayward pool heater and just replaced heat exchanger. If the answers I get here are all going to be "Go hire a tech" then sadly I will not find much value with this group. These special sensors monitor and detect changes in water flow. Thanks a bunch. hayward Inspect these parts for corrosion, scaling, and/or any electrolysis issues. It could be due to less obvious issues. Unfortunately, neither one of us have x-ray vision. Without gas, the heater wont operate. Once I replaced this I was able to see the lights again. They didn't find a leak but mentioned that his gas meter is too small for everything at the home.

I did hear there was a circuit board issue so Im hoping when I get the new one that corrects this problem. Might be a connection problem!! Dish-Drying Racks That Dont Hog Counter Space, How to Prepare for and Live With a Power Outage, 5 Remodels That Make Good Resale Value Sense and 5 That Dont, 10 Things People Really Dont Want in Their Homes. I would appreciate any information to fix this problem. Came back and pressure washed grids and charged me 70.00. What power supply is required for IDL and IDL2? (2) Bad gas valve. He's got a hose and spigot that drips back there and the area is normally wet anyway so it took some patience and time to find the leak. hayward mastertemp pentair either people can't afford to pay someone or can't find reliable service for the money they pay out. If the heater has not been fired in over a week, chances are there is a blockage in the burners or orifices that is preventing the gas from escaping the burner and reaching the spark. Itll te you how to check and replace. How do I check the pressure control. I have a Hayward H100ID that will not ignite. It cost me something like 10 times as much to provide electricity .. good for an emergency, but not otherwise! Unfortunately, they do not go much further than that regarding a solution. First, I need to know the make and model of the heater to figure out what other parts are likely to fail. 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You may recall my earlier comment re: terrible pool service in this area. Hold the knob down for a minute, so the pilot generator heats up, then release. I have a Raypak RP2100 heater. Monitor your PSI reading on your filters pressure gauge. If you yourself in this scenario, this blog article is for you. If it does, then your filter grids are dirty, and should be cleaned. I said "we'll see if that has any affect." My neighbor's is not. Our humid climate makes hardwood floors iffy, plus I like being able to mop tile and keep it really clean since we have pets. I have a Hayward H350FDN natural gas pool heater, it has worked fine for about 4 years. A dirty filter can cause low pressure and as a result, cause the heaters pressure switch to turn OFF. Here are the video links. It fires up fine again then the same thing happens. 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. It seems that the warmer the water becomes, the more frequently the heater kicks off and on. Have you had it serviced this year? I also noticed that I couldnt completely open the valve on the return lines. Pentair 350. Now in spring Im trying to get it to fire, but nothing. Was told maybe the control board was bad ?,any thoughts. Again, I am experiencing the same issue from last fall. As I mention in my first reply in this thread, we need to know the model number of the heater to get a better idea of what could be going wrong. Maybe that air bubble worked it's way (about 100 feet) to the heater and started the (3 strikes and you're out - wait 60 minutes for a reset) mode. LO Water Pressure Switch, Vent Pressure Switch, or Temperature Limit Switch Fault. I have replace the ignitor but still have same problem and display. Attempts to fire again. Advice? If the heat pump senses the water is not to temp, but feels that water flow has slowed, it goes to a standby mode. Any thoughts on what I can do to further troubleshoot? My MasterTemp 400 fails to work intermittently. My front display board doesnt go on at all. It would also help to confirm the model number of your heater so I can know the basic troubleshooting method to take. If you have a major issue it would likely be noticed during the cleaning. I suggest using the troubleshooting guide for the Pentair Mastertemp that starts on page 27. Were you able to troubleshoot the problem?? Inspect your heat exchanger for chemical or sanitizer damage. I run the heater and this time it did something different. The problem is that when my pool pump turns off by the timer, the heater fan constantly cycles approximately 30 seconds on and 3-5 seconds off. Your pool pump only moves a certain number of GPMs, therefore, too many water features can dramatically decrease your water flow. For a pool your size, you will need a higher BTU size. No offense but I am here because I don't care to hire a tech. The pool pump must be ON and your filter clean for the switch to close and allow voltage to pass through. Everything started up just fine at that point and functioned normally for 2 months until the above issues. Seems strange to me as nothing has changed since the new heater was installed 2 years ago and it has worked fine up until a few weeks ago. While in the store getting ready to pay for a new one, a customer recommended a pool guy. If the supply valve is OFF, turn it ON. Again, I thank you for your responses. Thanks! The black knob on the gas valve will have three positions; OFF, PILOT, & ON. I am not familiar with oil-fired heaters. The pool inspector told me I needed a new heater. I suspect maybe its the flame sensor? I can understand that there are people out there (like my neighbor) that wouldn't even attempt to repair/replace components such as sensors, ignitors, thermistors, gas valves and ICB's on their own but I also wouldn't expect them to be in this forum asking specific questions like above. I have replaced the Stack sensor thinking that it was the problem. Later located the water temperature sensor. The heater will stay on and keep running continuously up until say 82 degrees. Are there any other signs when the heater shuts down? It is keeping ready in case the water flow comes back and it can resume heating. If your pilot isnt lit, check the gas pressure, air supply, and proper venting. Other causes of this problem are: (1) Bad ignitor.

After maintaining it for several years, I just dreaded the upkeep and checking the chemicals and Ph frequently. When you clean the filter, you can see the actual amount of body oils that are deposited there, it looks like lard. The "techs" in my area are few and far between and our experiences with the ones that do service this area are less than desired. This weekend, when I finally had time to work on it, I see there is no power to the display at all: no service light, no heater light, no light or display of any kind. Theres a lot of videos out there about it. Test the voltage reading on thepressure switch with a multimeter. Where is this switch located. The spa is about 500+ gallons of water. ps0303 - how about opening up an Ohio branch? 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. My igniiton clicks, but then it fails to heat pas this point, sigh. Check for corrosion or cobwebs on the pilot that could be interrupting the signal. just happens when gets to correct temperature. JavaScript is disabled.

Possible leak in the heat exchanger which would explain the "smoke" he saw in the back when the symptoms first began. After the heater fails to ignite, does the display stay on or go blank? Check the Thermal regulator. 1st one is the initial issue. This is where my pool stops heating. We always had a piano & I took lessons for years, but its my ear for music I depend on, because Im very poor at reading sheet music. yes, my sprinklers hit the top of the hayward panel, putting some water in the exhaust and my heater wont work for a day or two until it drys out.. John, I am having the same problem.

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