Posted by cjunrau on December 27, 2016 at 07:47:37 from (209.202.4.128):
good morning to all. I have a JD 4230 with new circulating block heater. The in line is under the original frost plug heater and the top is towards the back of the head going in on top with a 90 degree elbow and 6 inch black steel pipe to bring it out to where you can clamp the hose onto coming from top of heater.. heater is mounted correctly as in upright position. The problem I am having is it air locks every time i plug it in. Last might was plugged in all night and this morning no heat into the top elbow. I crack the hose that goes onto the 6 inch black pipe and air hisses out for a bit then water comes and tighten up clamp again and the 6 inch pipe is hot in seconds. Why does it get air in the system every day????? How do I fix it???
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