Customer: replaced old mercury stat with ct87k4446, only two wires, r and w, zone valve was def, replaced motor unit , that is now OK. Thermostat does not seem to work at all. What should I get for voltage at the R and W terminals.? tried different switch settings on the internal setting, nothing works? My name is ***** ***** Thanks
JA: Thanks. Can you give me any more details about your issue?
Customer: It is a zone heating system
, the upsyairs zone is fine, the hot water is fine, the down stairs zone does not work with the new ct87k4446?
JA: OK got it. Last thing — JustAnswer charges a fee (generally around $18) to post your type of question to HVAC Experts (you only pay if satisfied). There are a couple customers ahead of you. Are you willing to wait a bit?
JA: OK. Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.