Have HVAC Questions? Ask an HVAC Expert for Answers
Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. First I’ll need some more info so I have a more complete picture of you situation.
Do any of the zones work? do the LED's on the Argo light up when you turn up the thermostat(s)? What is the model number of the boiler?
There is an additional charge for a call. I'll post an additional service offer. Simply accept it of you want to talk or we can continue here.
So I need answer to the questions I asked earlier:Do any of the zones work? do the LED's on the Argo light up when you turn up the thermostat(s)? What is the model number of the boiler?
Ok, I'll respond as soon as I can
Not CGi or CGa? what about my other questions?
Also assuming you do have CG which is an old(er) model; does it have electronic ignition or a pilot that's lit all the time?
OK, does it have a motorized vent damper? if so is it open?
Ok, so switch on damper is on HOLD OPEN. Do you have a multi-meter?
Ok if the boiler temp is below 150 do you have 24 vac at the gas valve?
Are the burners firing?
Well we can't troubleshoot a problem if the system is functioning properly. It has to be down to troubleshoot. If this is an intermittent problem where the Argo lights up but the burner doesn't fire up then it could ba a bad connection between the Argo and the boiler or anywhere in the boiler contrl circuit. The most common culprit there is the end switch in the damper (even if it is held open)
Next time if you have 24 volts to the gas valve, a lit pilot, temp below 150 and no burner flame then you have a bad gas valve. Otherwise it's an electrical problem as I just described.
The pumps have nothing to do with the burner firing or not except that they cool the boiler water down by circulating the water. Keep in mind that the burners only fire when there is a call for heat and the boiler temp is below the limit setting. Once the boiler temp is up to limit temp the burners shut down (open limit switch) until the boiler temp drops low enough to close the limit again. Only the pumps run all the time there is a call for heat.
Did you read my last post?
If there is more than one zone calling it would be extremely odd (never heard of it happening) that calling in 1 additional zone would open the XX terminals which would shut down the boiler. I don't see how it could happen.