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HVAC Guru
HVAC Guru, HVAC TECH
Category: HVAC
Satisfied Customers: 14026
Experience:  15yrs in the HVAC industry with certificates and degrees.
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Thermostat no display, ithermostat, PSEG honeywell, no

Customer Question

Hi
JA: Hello. What is your issue regarding?
Customer: thermostat no display
JA: Just to clarify, do you think this is a larger HVAC problem, or something specific to the thermostat?
Customer: ithermostat
JA: What are all the symptoms of the problem (error codes, flashing lights, etc.)?
Customer: PSEG honeywell
JA: What happened just before this problem started? What troubleshooting have you tried?
Customer: no display
JA: Anything else you want the HVAC tech to know before I connect you?
Customer: is it a free service
JA: The HVAC Technician's require payment for their services. It's way less expensive on JustAnswer than face-to-face would cost.
Customer: how much
Submitted: 3 months ago.
Category: HVAC
Customer: replied 3 months ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Customer: replied 3 months ago.
please contact(###) ###-####
Expert:  HVAC Guru replied 3 months ago.

Hello and thanks for using this service! If you are a JA Member I would like to personally thank you and welcome you back! I am HVAC Guru an extremely experienced tech on the site and I try to get to as many customers as I can. NOTE it takes time for me to type research and add links so please wait for me to respond back I can only do this so fast. Secondly, I do not know your skill level so please try and let me know if I am going beyond your knowledge or comfort zone thanks! I strive for a 5 star rating from everyone especially our JA members.

Answer:

What likely happened is the low voltage fuse in the furnace or airhandler blew. There typically is a SLOT STYLE 3-5AMP FUSE on the board itself inside the furnace/airhandler like this.

CLICK HERE

If that is burned out all power to the thermostat will be lost. 95% of all units use some sort of SLOT FUSE or inline BUS STYLE FUSE to protect the low voltage circuit. You need to find that and change it out. If you just bump two wires together you could have just popped it without even knowing it. Now if for some reason your unit does not use a fuse often the board will be damaged due to the short. You would need to confirm you have 24 volts to the board inside the furnace/airhandler with a volt meter to make sure though.

Note if you have a condensate pump check the float and make sure the pump is not full of water...as that could cut low voltage power to the unit as well if the pump is not working and full of water

All I ask is please use the Star Rating Link at the top of your page before leaving, that is the only way I am paid anything through the site and that will also get you a DIRECT LINK emailed to you to get back to me!.....tips are greatly appreciated so thank you very much for using this service. If you have any other questions just post back to me here anytime!

Expert:  HVAC Guru replied 3 months ago.

Hi there,

I was just touching base with you because I have not heard back from you and the question is still open and unrated, I am not credited anything until a good star rating is supplied thank you.

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