Question about Heating & Cooling
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Posted on Jan 02, 2017
How old is it? Can you justify spending lots of money on an older system? Sounds like a transformer issue. Sometimes if the low voltage wiring gets shorted outside via dog or weed eater it will short the transformer. But if transformer is on control. Controls are cheap at supply houses maybe not from technicians
Posted on May 29, 2009
E-5 -Comms Error, check your wiring, remove external pumps. Split/Multi - check volts from terminal N to 3 = 0 - 65 Vdc, Multi V - 4 Vdc terminals 3 and 4
Posted on Jan 03, 2011
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