I have a Greenwood model 200. Sometimes the aquastat does not trigger the damper motor to open the damper. I have replaced it and the problem persists. I thought I got a bad aquastat and the company replaced it. I can manually trip it by rotating the dial down and back up and it works. It is set to 180 deg. with a 15 deg difference. When I turn it down past the current water temp and back up it will trigger the damper motor. Example: Water temp drops to 150 and does not trigger the damper, I rotate aquastat down to 140. As it passes 150 it clicks. When I rotate it back to 180 it will trip the damper at or around 150, the current water temp. Any ideas?
Greenwood problems
- Thread starter woody2009
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Yes there is a flow switch. I installed the boiler in 2010 and the first 2 seasons everything was fine. then in started and I installed the new stat, then another. All 3 have done the same thing. Each worked for a while then started to malfunction. May work for a week or two and then start failing. Once manually tripped it may work once or maybe a week or two then it fails again. I've checked for loose wiring thinking the heat may have done something but all connections are tight. I put the original back on and it did the same thing, worked for a while then started to fail. It will each one will always manually trip then work on it's own for a while. I don't have much hair and am about to pull the rest out.
BoilerMan
Minister of Fire
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