MasterTemp 400 has stopped working. any tips?
- Thread starter SlipperyPete
- Start date
I have no idea. What should I be looking for, the valves controlling the water flow? I have intellivalves, so I don't touch them. I will go check to make sure they are operating as they should. However, the heater errors out whether I'm using the pool or spa.
That seems low unless the thermistor was hot.
Try replacing the temp sensor to rule out a faulty sensor.
If the temp still climbs fast, then is is maybe a flow issue or maybe scaling or sooting.
Try replacing the temp sensor to rule out a faulty sensor.
If the temp still climbs fast, then is is maybe a flow issue or maybe scaling or sooting.
The air temp here is about 73 degrees. The flue didn't feel too hot. I was a little warm from trying to run the heater. I bought a sensor on Amazon. It will be here tomorrow. I'll swap it out tomorrow and see if that changes anything.
I can't express how much I appreciate the help.
Attachments
- Jul 21, 2013
- 65,062
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
I did. I posted it earlier, but I just referred to it as "my handheld". The heater cut off when the exhaust temp hit 309. I didn't get a picture b/c it cut off as I was getting my phone ready.
The infrared temp sensor can be tricky to get a good read.
The heater errors out at 480 F.
Here is what the normal exhaust temperature should be:
The heater errors out at 480 F.
Here is what the normal exhaust temperature should be:
- Below 250 degrees...very low
- 250 to 290 ..................low
- 290 to 350.................acceptable
- 350 to 480 ..................high
- Above 480...................error/shutdown.
Interesting. I've had the same settings for 5 years. The heater errors out in spa mode as well when it is pumping at 55 GPM.
The filter is about due for a cleaning, but it's usually not bad. I keep my water crystal clear thanks to this site. I can make time to clean it this weekend to be safe.
The new sensor came in late evening on Thursday. I installed it and the heater seems to be working. It ran fine for an hour until my pool schedule kicked in and turned off the pool. I’ll test for longer in the AM and report back.
Did you check the resistance of the new sensor?
Did you check the stack flue temperature?
Did you check the stack flue temperature?