by robert edmunds » Mon Jan 11, 2010 5:00 pm
"I installed a new BD-50 along with a control module yesterday, the carel thermostat powered up and was showing evaperator temperature. However I was getting no signal to the module. During programming I did not get ST 1 symbol. The symbol shgowed ( S then a character that looks like an upside down F 1. Is this the symbol or is it in error? any other suggestions as to why the thermostat is not communicating with the module."