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Buderus g115 short cycle on one zone
Hello this is a new system and this weekend it was cold enough to test the heat zones. It appears the three zones work but the zone on the middle floor was cycling about 1 minute on and then shuts off does this repeatedly every 20 minutes or so. The baseboard barely Warms with this short run and I don't think the thermostat would react to so little heat to turn off the zone.
The outside temp was about 45 degree maintained about 70 degrees inside .wondering what could be causing this. I have the aqua stat control with three zones plus zone for water heater which has priority. I have one circulator before the zone valves.
Any help you can provide I will appreciate.