4 or 5 button comfort control. Turn off thermostat from main power switch at bottom. Hold zone and mode button down at the same time. Turn on thermostat from main power switch. Display should read FF If done correctly this will reset the thermostat.
Somewhere in your manual you should have a table telling your what the codes mean. I have no idea. Once you find out I can most likely direct you in how to fix it.
Answers & Comments
Before you call a tech, make sure there are no tripped breakers or open fuses.
4 or 5 button comfort control. Turn off thermostat from main power switch at bottom. Hold zone and mode button down at the same time. Turn on thermostat from main power switch. Display should read FF If done correctly this will reset the thermostat.
Somewhere in your manual you should have a table telling your what the codes mean. I have no idea. Once you find out I can most likely direct you in how to fix it.