mastertemp

Hi everyone, hoping for some feedback. I'll try and explain the series of events. A month ago, I happen to notice our pool water was in the high 90's deg. The temperature set in the Pentair mobile app was set for 65 deg, but it seemed the heater disconnected from the EasyTouch Panel and was...

I have a Mastertemp 250, I installed it less than a month ago. It was working great until last week. I started to get AFS and IGN errors, more often the IGN error though. The heater will try to start up and begin the firing process just fine, the igniter lights the gas, the exhaust gets hot...

Hi everyone, first post here. We got our pool installed last September. Pentair setup with Easytouch 4 and Mastertemp 300. Ever since it was new we've had to walk to the pool heater and hit the spa mode or pool mode button manually when we turn on the heater from the app or the easytouch...

Where does the comm cable go for the mastertemp from the intellitouch? I want full functionality on from inside and at the automation and all I’m finding is using the fireman’s switch to turn on/off the heater at an existing setting. I want to be able to adjust the temp from inside. Where on...

Need help diagnosing. Long story… My mastertemp 400 sprung a leak in the exchanger about 2 years ago. I patched it with JBweld and it held until a week ago when my heater stopped working as the patch failed. I bought a new heat exchanger, and when I went to replace it, noticed the combustion...

I have already replaced all sensors and the thermistor twice, so its not those. So the problem is when the heater is not running the temperature of the actual spa and the heater unit are the same(working). As soon as the heater begins running, the spa temperature will begin rising and the...

last year my membrane stopped working and the temp down button would no function. I replaced the membrane and it works this year for a few weeks. Now it will start and ignite and I can feel the heat coming off the exhaust but after about 2-3 minutes the temperature begins to drop until it hits...

Hello All, I know there are many threads re this issue but here goes... I have a Mastertemp 400 natural gas heater that was winterized in perfect working order at the end of last pool season. Attempts to start it up this year has resulted in the heater starting as usual and shutting down...

So I recently diagnosed that the control board of my Mastertemp needed to be replaced. It's not quite 3 yrs old and while the 'pool on' light was lit, none of the red ones were, it wouldn't kick on. The lcd screen was blank as well. So our installer brought over a new board. It's the r14...

So my easytouch has an indoor panel as well as the app. When I turn on the heater using the easy touch indoor panel, the heater does not come on. I think it used to though. I cannot remeber what I did but I must have changed some settings because I think the heater button on the easytouch...

We have a new pool/spa combo with a new MasterTemp 400. Everything with the heater seems to work OK except for one thing. In the spa, the heater heats up to the called-for temperature (104 for example). Then, the heater cuts off and the water keeps circulating. When the temperature drops below...

Hello, I have a Mastertemp 400 that is short cycling (heats for 30-40 seconds then stops for 30-40 seconds, rinse and repeat). I have replaced the Control Board, HLS, AGS and Stack Flue Sensor. The Thermistor appears to be functioning (reporting correct water temp at the heater display) and...

Currently having an issue with my heater. It was running fine last night, went up to 100 degrees, but today it won't heat. When I turn it on, the ignitor kicks on, then immediately turns off. I can hear a subtle beeping and the service heater light comes on. There is no water flow issue as water...

I have a 9000 gallon small pool that had a MasterTemp 400 heater installed. The basket and coils rusted out and the replacement parts are not worth investing in a 9 year old heater. I was thinking about a new MasterTemp 250 bc it is a bit less expensive and the hookups should be easy except for...

Hello - I have the Intelliflo VSF with the control panel (which is remote), it is great to set the pump schedule, but I want to connect my MasterTemp heater to run (have power) only when the pump runs. I have an intelliChlor which came with a communication cable that I do not use because it is...

Hi all, I know this has been discussed in past, but I don't see a resolution in any of the previous posts. My 6 year old Pentair MasterTemp 400HD does not heat after it rains. Blower turns on, heater kicks on and starts working but then shuts off after a few seconds. It then does this 2 more...

I have a MasterTemp 400 that I have been troubleshooting since last year. I've check different foruns and looks like a common issue, but I have yet to see a resolution. Perhaps you can help. As soon as I turn the heat on, I see a 75 reading. It 'heat' blinks to call for heat and then steady...

I am having a problem with my heater but it is unpredictable, one day it happens and other day it does not. On the remote or on the Easytouch control panel it shows that the heater is on, but in reality it looks like having no power. Then it just works on it is own. Some times it maybe working...

I’ve had a brand new Pentair Mastertemp 125 installed. The board comes on, then I hear the blower. It tries to light several times then sometimes it will eventually turn the service heater light on. While trying to light several times, I will smell some gas. I’ve tried to bleed the line from...

It starts fine, runs for 2-3 minutes then triggers the Service Heater. I took the front panel off to see the LEDs on the board and I see nothing that is on. What would tigger the Service light if no LEDs are triggered? If I turn it off and turn it back on, it will run again for the 2-3...