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: 8768
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 have a bard gas furnace modeI IH85D848E The air

Customer Question

I have a bard gas furnace modeI IH85D848E The air conditioner works but no heat. i dont think i am getting voltage 24 volts at the eletronic module . nothing comes on and no cycling sounds are heard
JA: Did you double-check the thermostat's settings? And what about the filters?
Customer: Yes i did wondering if its the thermostat on the heat side its the old honeywell round mercury thermostat
JA: Do you plan on doing the work yourself?
Customer: Yes i have a great electrical background understand OHM's Law
JA: Anything else we should know to help you best?
Customer: It has a contactor relay and no hot surface sensor large high heat limiter
Submitted: 1 month ago.
Category: HVAC
Expert:  Phil replied 1 month ago.

Hello, please take a close up, exceedingly well focused photo of the wiring diagram glued inside the units service panel... and another one of the printed circuit board showing the thermostat wire connections, and I will mark those up with trouble shooting instructions.

.

We can go from there without a time limit

.

OPENING STATEMENTS

Important note about RATING my work:

I am a retired mechanical engineer and HVAC/electrical/ refrigeration and boiler contractor ... with 56 years in this business. The last 20 of those years consulting for major firms nationally..

.

All I ask is please respect me and my input by selecting the***RATING LINK***at the top of your page, that is the only way I am credited through the site. Rating does not affect your charges nor ability to refund if not satisfied.

.

If you need to be coached through a full diagnosis/repair,and wiring etc. for up to two days, and wish to be trained to use test instruments...... that goes well beyond' Just a simple Answer' of course, and goes beyond what most other experts here offer.....rate my answer so far positively.. . and I will deliver that training and coaching to you All on the same dime so to speak.

.

Lacking a positive rating I can spend days helping a person at my own expense and loose my shirt, shorts and socks on the deal.

.

Attach a close up photo of the wiring diagram glued to the inside of the blower access door and I will mark it up with trouble shooting instructions then follow up with step by step training and coaching until you have a solution.

.

Photo must be exceedingly well focused. Use the 'add files' link next to your send button to get the photo to me.

.

Phone call offers:

If you wish to accept the companies $25 phone call offer, if indeed they send you one, this will go a *lot faster, but it IS 100% optional... or we can continue here in this dialog box at no additional charge.