Hey guys, long time lurker with issues, and I have had much success from here. However, I am currently having issues with my 2011 Mastertemp 400 not igniting. We were using it fine one day, then it failed to fire the next day or two later when we tried to heat the spa again. I have gone through a ton of troubleshooting, even calling out a local pool repair guy that didn't really seem up to snuff with the Mastertemps during the process. However, I am still having the same issue, and I don't want to keep paying people to come out and try to guess what is going on.
Outside of trying just keep replacing random parts, which at this point aren't the cheap ones. I am not sure what to do. I thought about trying to open the blower and make sure nothing is clogged up inside that might be preventing gas flow or something. What is irritating is I got it running for a short period and back to square one. Any help some of you with more experience than me with this would be greatly appreciated!
- What happens?
- Heater powers up.
- Blower turns on and heating light flashes yellow.
- After about 20 seconds, it tries to ignite. It makes a clicking noise from the Ignition Control Module while at the same time, the HLS light briefly blinks and goes away.
- Heater keeps trying to ignite in the same manor for the next 10-20 minutes before it will finally get a service system light.
- No other control board or ICM lights come on.
- What have I done?
- HLS and Thermistor have been replaced within the last 6 months or so.
- I've cleaned the filter, pump, and skimmers.
- Flow seems fine, nothing really changed here. Cleaning obviously made things better than they were.
- I've removed the manifold to the Mastertemp to check for scaling and broken parts.
- Discovered the thermal regulator was not opening properly and was bent stuck halfway open.
- Replaced thermal regulator.
- Pool repair guy said to replace the igniter, which I did. Heater then worked for about consistently with several intentional test start/stops. Ran heater for 1 hour straight then it started having the exact same issues all over again. Back to not igniting at all - same problem.
- New igniter is getting hot.
- I am getting 100-110 VAC to the igniter.
- I am getting 70-75 Ohms on the igniter.
Outside of trying just keep replacing random parts, which at this point aren't the cheap ones. I am not sure what to do. I thought about trying to open the blower and make sure nothing is clogged up inside that might be preventing gas flow or something. What is irritating is I got it running for a short period and back to square one. Any help some of you with more experience than me with this would be greatly appreciated!
