Hello,
I am looking for some help in determining the root cause for an auto reset error (temp rise too quickly) I am having with my boiler. I have noticed this errors occurring for the past month or so. I've had an HVAC company (picked from the Weil McLain website list) come out a couple of times and try the following items to fix it.
1. Purge the air from the system (both the first floor zone and the second floor zone)
2. Confirm the main boiler pump (the black Taco 007) has voltage and measure the current of ~0.70A
3. Measure the resistance of the Supply temp sensor
a. It was out of spec and I recently replaced both the return and supply sensor, but it didn't fix the issue
4. Confirm / adjust the natural gas pressure being supplied to the boiler (from the regulator to the boiler)
I have attached pictures of the installation to the post. The boiler was installed in November of 2011 (I was not the owner that this time and have bee in the house of 1.5 years). When I have been standing in front of the boiler and the error has occurred I have noticed the following;
1. Most of time (all of the times I have seen it happen except for once) has been when zone 3 (second floor heat) is calling for heat and is the only zone calling for heat. Meaning only zone 3 calling for heat and not zone 2 and 3.
a. Also note, the one time I saw this happen with zone 2 it was also the only zone calling for heat (not zone 2 and zone3)
2. The error occurs within ~10 seconds after flame has started in the boiler.
a. The boiler goes through the pre-purge time, ignition, flame and then soon after flame the error occurs
3. Once the error occurs the screen turns red and the boiler goes through the auto reset process (the pumps are all running at this time). After the reset process finishes it goes back through its normal start up process and works without an issue.
4. I have also attached an Excel file and PDF file that both show the Lock Out history information for the boiler. I have two sets of information. One is from errors I got with the old temp sensors and one is for the errors I've gotten with the new temp sensors.
Please note the error information shows the return temps as higher than the supply temps. However, I dont believe the sensor wiring is swapped between the two because when its running the supply temp is ~20F higher than the return. Additionally, the first floor of my house is ~1071 sq ft and the second floor is ~1000 sq ft.
Can anyone take a look at this information and let me know your advice? Thank you and please let me know if you have any questions. Thanks again.
I am looking for some help in determining the root cause for an auto reset error (temp rise too quickly) I am having with my boiler. I have noticed this errors occurring for the past month or so. I've had an HVAC company (picked from the Weil McLain website list) come out a couple of times and try the following items to fix it.
1. Purge the air from the system (both the first floor zone and the second floor zone)
2. Confirm the main boiler pump (the black Taco 007) has voltage and measure the current of ~0.70A
3. Measure the resistance of the Supply temp sensor
a. It was out of spec and I recently replaced both the return and supply sensor, but it didn't fix the issue
4. Confirm / adjust the natural gas pressure being supplied to the boiler (from the regulator to the boiler)
I have attached pictures of the installation to the post. The boiler was installed in November of 2011 (I was not the owner that this time and have bee in the house of 1.5 years). When I have been standing in front of the boiler and the error has occurred I have noticed the following;
1. Most of time (all of the times I have seen it happen except for once) has been when zone 3 (second floor heat) is calling for heat and is the only zone calling for heat. Meaning only zone 3 calling for heat and not zone 2 and 3.
a. Also note, the one time I saw this happen with zone 2 it was also the only zone calling for heat (not zone 2 and zone3)
2. The error occurs within ~10 seconds after flame has started in the boiler.
a. The boiler goes through the pre-purge time, ignition, flame and then soon after flame the error occurs
3. Once the error occurs the screen turns red and the boiler goes through the auto reset process (the pumps are all running at this time). After the reset process finishes it goes back through its normal start up process and works without an issue.
4. I have also attached an Excel file and PDF file that both show the Lock Out history information for the boiler. I have two sets of information. One is from errors I got with the old temp sensors and one is for the errors I've gotten with the new temp sensors.
Please note the error information shows the return temps as higher than the supply temps. However, I dont believe the sensor wiring is swapped between the two because when its running the supply temp is ~20F higher than the return. Additionally, the first floor of my house is ~1071 sq ft and the second floor is ~1000 sq ft.
Can anyone take a look at this information and let me know your advice? Thank you and please let me know if you have any questions. Thanks again.