Bryant Evolution Error Message

[tuccillo]

My Evolution system has a "VC Startup Volts" error message occasionally. When this happens the compressor wont start. My HVAC guy is at a loss. Anyone know what this is?

[plain spoken]

What is the model number of your outdoor unit? This could be caused by several things. Have your contractor contact the distributor service manager if he needs help with this.

[tuccillo]

It is a 698B048. He hasnt received much help from Carrier tech support.


Originally posted by plain spoken
What is the model number of your outdoor unit? This could be caused by several things. Have your contractor contact the distributor service manager if he needs help with this.

[tech_support007]

How Often does this happen? It could be a problem with your power, due to brown outs. Find out where in the service pannel the a/c is connected. if its ob the bottom of the electrical pannel it could be having a hard time drawing the correct amount of volts upon startup thus causing a VC/VH Trip... What area are you in?

[turkey]

If he hasnt already throw a new cap. i had the same thing on a heat pump(carrier) went away with a new cap.

[tuccillo]

It has happened 3 time in the last 2 weeks. Our power is fine, it is a new house - we are in SE Georgia.


Originally posted by tech_support007
How Often does this happen? It could be a problem with your power, due to brown outs. Find out where in the service pannel the a/c is connected. if its ob the bottom of the electrical pannel it could be having a hard time drawing the correct amount of volts upon startup thus causing a VC/VH Trip... What area are you in?

[watercop]

I'd (or get an electrician in to) double check that "the power is fine" in that new house.
Small appliances may seem to run well but maybe there is an excessive voltage dip occurring during the compressor start.

I was unaware of the possible problem of a voltage drop across length of the service panel bus bar described by an earlier poster but I can visualize how that could happen.

If supply voltage to the house is a bit low owing to being far down the distribution line or a transformer setup issue it may well be that the AC system is the only high current appliance sensitive to the problem. Range, clothes dryer and water heater (big 240 volt appliances) will all seem to work fine on slightly reduced voltage but a motor may well not.

Checking will take only a few minutes by someone with a multimeter who knows what they are doing...but could kill someone who doesn't!