HELP: Any HVAC Experts?
 

I have a bit of a problem...

My heat-pump compressor won't activate (it's temperate enough this weekend to open the windows, but a test of the system revealed some trouble).

Symptoms:

• A/C will not engage; thermostat does not indicate operation at setpoint
• Heat will not engage, but thermostat indicates that it is running
• Aux-Heat (Gas) functions properly
• System blower fan is functional

What I've checked:

• Power to the compressor
• All wiring is intact at the 'Stat, Furnace/Blower, and Compressor
• Circuit breakers OK
• System status LED at furnace/blower indicates "Normal"
• No trouble codes at the 'Stat
• Outdoor temp is functional from the 'Stat display

We've had some pretty bad storms with lots of lightning lately. We usually either get struck nearby, or take a surge from a strike. My guess is a bad relay somewhere, which is beyond my repair.

Any thoughts? Someone will have to come out Monday if I can get it fixed.

Thanks...

-RH77

Nevermind
 

Nevermind. It just started working again :confused:

Maybe there's a loose connection, or it's temp related.

RH77

I don't know if you get fire ants up there,but we have 'em in Texas and they love relays.They get inside and die,then when the T-stat calls for cooling the contacts can't make and compressor won't kick in.Fun! Compressed air will purge out the dead bodies and restore operation.It's a lone-star thing!

Sorry so long getting back,write to me anytime
 

I always get on the sign about gas mileage.Today I was looking at other topics.So I hope that I can help,.THX

Sorry, this thread kinda merged with another and I forgot to update it...

The system just started working on its own the next day...

But, about a month later, lightning blew out the capacitor and a technician replaced it (after a few uncomfortable nights -- of course it happened on a Friday :rolleyes:)

Now the system is running great. No Fire Ants up here, thankfully :thumbup:

RH777