How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Phil Your Own Question
Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 5648
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
23932409
Type Your HVAC Question Here...
Phil is online now
A new question is answered every 9 seconds

I've just installed a Honeywell Series RTH111

Customer Question

CANCEL THIS ORDER

I've just installed a Honeywell Series RTH111 non-programmable thermostat, replacing an aging Honeywell programmable thermostat which no longer functions properly. I followed all instructions, and now when turning the heating/cooling power switch back on, absolutely nothing happens - no display at all. The old unit had four wires attached - green, blue, red & white, all matching color connector posts except for the blue wire, which matched up with a "Y" (there was no 'B' post). The new unit has a 'B' post, so I inserted the blue wire into that connector. When turning the power on, nothing happened. So I disconnected the blue wire from the 'B' post and instead connected to the 'Y' post as in the old unit. Turned the power back on, and still nothing. HELP! Must I install a programmable thermometer?

Submitted: 1 year ago.
Category: HVAC

Related HVAC Questions