208/240 transformer question Answered
After having several (like 4) thermostats fail in a 6-year period, it finally dawned on me to check the voltage from the transformer and I found it to be a bit over 28 volts. My condo building has 208V service. The transformer in my air handler is a 208/240V one and was wired to the 208V terminal. I removed the wire from the 208V terminal and connected it to the 240V terminal and then found the voltage to be 24.2V. So I have possibly solved the problem of the thermostats failing but my question is, will this cause any damage to the primary (or secondary) of the transformer? Thanks in advance!