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, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
Type Your HVAC Question Here...
Phil is online now
A new question is answered every 9 seconds

I have an arcoaire gas furnace that is flashing error code

Customer Question

I have an arcoaire gas furnace that is flashing error code for control cutout from retry. I replaced the thermostat midsummer and a/c worked fine but now not getting any heat.
Submitted: 6 years ago.
Category: HVAC
Expert:  ClimateCreator replied 6 years ago.
Ok so let me get this straight. When you shut it down and turned it back on, nothing happened at all? No try again? Did it keep flashing the same code?

Edited by ClimateCreator on 11/25/2010 at 5:32 AM EST
Customer: replied 6 years ago.
Its been shut down for the summer. Just now gettin it going again for winter. Over the summer replaced old dial type thermostat with honeywell programmable digital unit. A/C worked fine all summer. Used thermostat on manual mode the whole time. I only get flash code light when I push switch for front cover for blower section of unit with door off. It only flashes once and after 15-20 seconds of no more flashes, I let go of switch. It has power to control unit but won't try to fire burner at all. I cant hear gas valve open and igniter definitely isn't trying to ignite. I've shut thermostat and furnace down together then turned furnace back on then thermostat and NO retry at all.
Expert:  ClimateCreator replied 6 years ago.
Hi sorry for such a long delay over the holiday. I hope yours was good. About this problem, have you checked the wiring at the thermostat? Maybe you're missing the jumper between RC and RH?

Related HVAC Questions