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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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I submitted a question last Saturday (id # 16760737-70) and

Customer Question

I submitted a question last Saturday (id # 16760737-70) and have not received a response. Any idea on when I might receive a response? Thanks
JA: I'll do all I can to help. How long have you been dealing with this?
Customer: not an urgent matter, just looking for an answer
JA: Do you plan on doing the work yourself?
Customer: yes
JA: Anything else we should know to help you best?
Customer: just the id # so they can see all the info I have already provided - id # 16760737-70).
Submitted: 9 months ago.
Category: HVAC
Expert:  airheatman replied 9 months ago.

Do not see any record of the question.What are you wanting to know?I will do my best to help

Customer: replied 9 months ago.
I have a 2 zone heating/cooling system. It is a Honeywell MasterTrol mm-2 zone control board. I would like to replace old thermostats with Honeywell 6500 wifi thermostats and would like to know how to wire them. The old thermostat for zone 1 has the following wires/terminals - Y R W B O G and the new thermostat has the following Y R W C G. How should I wire these?The second zone only uses 3 wires/terminals although there are 5 wires available.
Customer: replied 9 months ago.
I will send you pictures of the zone control board and the furnace control board
Customer: replied 9 months ago.
Zone control board
Customer: replied 9 months ago.
Furnace board
Expert:  airheatman replied 9 months ago.

Sorry but I am not familiar with the zone board.

I have opted out of the question to see if perhaps other experts may have more information and can assist.Please do not rate or reply as that will send question back to my desk and delay getting assistance..Please stand by to see if another expert can assist further.Leaving a poor service rating will not automatically refund your money. You have to request a refund if not satisfied with the information provided being accurate.

If no expert can help and you are unsatisfied, we can request a refund of your deposit

Customer: replied 9 months ago.
Wiring diagram for Honeywell control board