Jersey5.0
New Member
Hi All,
Hoping for some help here.
I have a newer Slant Fin boiler (3 years old) with a Carlin Model 99FRD burner. It uses a Honeywell L7224C 1004 aquastat. My boiler makes my hot water through a coil inside the boiler.
My issue is this: About once every 2 weeks I find that I have no hot water. I take a look at the boiler, and the water teamperature is the same as outside ambient temperature, and the boiler is not on.
I take a look at the aquastat, and it has set no error codes. The Aquastat has an board that displays the correct temperature. The temperature displayed on the board is roughly the same as the temperature that I see in the mechanical guage on the boiler, so I'm assuming the temperature sensor is reading correctly, and the aquastat is able to understand the temperature reading from the sensor. There are some LED lights on the aquastat that are blinking when the issue is occuring. I can't find any wiring damage or loose connections on the aquastat.
If I flip the service switch off and then back on, the relay for the aquastat clicks about 5 times, but the boiler still does not start.
My boiler uses an auto bleeding system with a clear bulb, so I can see that that oil is going to the burner, no issue with oil supply.
If I press the reset button on the burner, the boiler immediately fires up with zero issues, and will work correctly for weeks at a time.
I had the boiler recently serviced hoping the issue may be a clogged nozzle or filter. Filters and nozzle were replaced, boiler was cleaned inside, tuned, and given an OK health check. The problem still persisted after.
At this point I'm kind of stumped. I'm leaning towards having a bad aquastat, but don't want to throw $140 at it without something a little more concrete to test.
I can't see it being oil related, as I never have an issue using the reset button. I can't see it being wiring related for all the same reasons. I don't think it's the temperature sensor because the read out from the sensor diplayed in the aquastat is correct.
It seems as though the temperature sensor is telling the aquastat that the water temperature has dropped down, but the aquastat isn't commanding the burner on. I am not opposed to calling a professional, but to be honest I think it would be quite challenging being that it happens so intermittently and randomly.
Any insight would be amazing,
Thank you
Hoping for some help here.
I have a newer Slant Fin boiler (3 years old) with a Carlin Model 99FRD burner. It uses a Honeywell L7224C 1004 aquastat. My boiler makes my hot water through a coil inside the boiler.
My issue is this: About once every 2 weeks I find that I have no hot water. I take a look at the boiler, and the water teamperature is the same as outside ambient temperature, and the boiler is not on.
I take a look at the aquastat, and it has set no error codes. The Aquastat has an board that displays the correct temperature. The temperature displayed on the board is roughly the same as the temperature that I see in the mechanical guage on the boiler, so I'm assuming the temperature sensor is reading correctly, and the aquastat is able to understand the temperature reading from the sensor. There are some LED lights on the aquastat that are blinking when the issue is occuring. I can't find any wiring damage or loose connections on the aquastat.
If I flip the service switch off and then back on, the relay for the aquastat clicks about 5 times, but the boiler still does not start.
My boiler uses an auto bleeding system with a clear bulb, so I can see that that oil is going to the burner, no issue with oil supply.
If I press the reset button on the burner, the boiler immediately fires up with zero issues, and will work correctly for weeks at a time.
I had the boiler recently serviced hoping the issue may be a clogged nozzle or filter. Filters and nozzle were replaced, boiler was cleaned inside, tuned, and given an OK health check. The problem still persisted after.
At this point I'm kind of stumped. I'm leaning towards having a bad aquastat, but don't want to throw $140 at it without something a little more concrete to test.
I can't see it being oil related, as I never have an issue using the reset button. I can't see it being wiring related for all the same reasons. I don't think it's the temperature sensor because the read out from the sensor diplayed in the aquastat is correct.
It seems as though the temperature sensor is telling the aquastat that the water temperature has dropped down, but the aquastat isn't commanding the burner on. I am not opposed to calling a professional, but to be honest I think it would be quite challenging being that it happens so intermittently and randomly.
Any insight would be amazing,
Thank you