Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
Peerless 211A help
John McArthur_2
Member Posts: 157
I have a 211A with the RM7890 burner control that keeps going into lockout. The boiler is a nat. gas unit and I have checked the high and low pressure safety switches on the gas train. The manifold press. is 3.5" w.c. When I test the dc volts at the flame amplifier, I get ~2-4vdc with the pilot lit. None of the safties trip but it keeps intermittantly going into lockout.
The only odd thing I have noticed is that the power light on the RM7890 blinks on and off at a slow pace. I don't know if this indicats line noise or is normal. I have read through the literature but since I have never witnessed the boiler go into lockout, I don't have any idea what is causing the problem. The problem occurs summer and winter so it is not a temp issue for the control or flame amp. The boiler sits directly in front of a louvered door. I don't think it is a draft blowing the pilot out because I have been in the room for hours with the boiler in operationg w/o issue. The second boiler has ran about 4x as many hours in the past year as the problem one. The second boiler is older and has the 24v control/ignition system.
Any help would be greatly appreciated. Thinking about getting a display module for the burner control to help troubleshoot.
The only odd thing I have noticed is that the power light on the RM7890 blinks on and off at a slow pace. I don't know if this indicats line noise or is normal. I have read through the literature but since I have never witnessed the boiler go into lockout, I don't have any idea what is causing the problem. The problem occurs summer and winter so it is not a temp issue for the control or flame amp. The boiler sits directly in front of a louvered door. I don't think it is a draft blowing the pilot out because I have been in the room for hours with the boiler in operationg w/o issue. The second boiler has ran about 4x as many hours in the past year as the problem one. The second boiler is older and has the 24v control/ignition system.
Any help would be greatly appreciated. Thinking about getting a display module for the burner control to help troubleshoot.
0
This discussion has been closed.
Categories
- All Categories
- 86.3K THE MAIN WALL
- 3.1K A-C, Heat Pumps & Refrigeration
- 53 Biomass
- 422 Carbon Monoxide Awareness
- 90 Chimneys & Flues
- 2K Domestic Hot Water
- 5.4K Gas Heating
- 99 Geothermal
- 156 Indoor-Air Quality
- 3.4K Oil Heating
- 63 Pipe Deterioration
- 916 Plumbing
- 6K Radiant Heating
- 381 Solar
- 14.9K Strictly Steam
- 3.3K Thermostats and Controls
- 53 Water Quality
- 41 Industry Classes
- 47 Job Opportunities
- 17 Recall Announcements