Have RV Questions? Ask an RV Mechanic Online.
Hi my name is Robert...
As soon as you turn the thermostat ON and raise the temp you should have voltage going on a wire from the T-stat to the time delay relay and the fan should kick.... One post on the relay should be constant hot, another wire will go to the blower motor and should have voltage on it when when the blue wire from the thermostat has voltage and another wire should be the ground. IF you have no voltage at the relay delay then it sounds like a thermostat issue or the thermostat is not getting power. IF you have power at the time delay you should be able to jump the relay constant hot to the blower wire and the fan should come on. Click HERE and see page 27 for some troubleshooting on this, if you have more questions or concerns please feel free to contact me... Robert
Sounds like you could be talking about the gas valve if the wires are brown and yellow. I DO not think your problem is at the furnace. The signal comes from the thermostat so what is the make and model of the Thermostat can you send me a picture? I think what you are looking at is on some they will have an OFF/ON switch or circuit breaker, I just saw it as well on that diagram it claims it is on the blue wire. The red going into relay should always have power and that should be coming from your breaker panel inside. SO no voltage on the red then I would be looking at your fuse panel for a blown fuse, if you have voltage on the red and not the blue thermostat..... Robert
I am not sure why you would be locked at of the reply.
One of your red wires at the delay should always have voltage, that power should come from the fuse panel inside, it feeds the power. So if you were to run a wire from the battery to that post and the furnace starts then it has to be a wiring issue from the fuse panel to the relay.
IF the red is hot but you have no voltage on the blue wire when you turn it ON then it could be the thermostat or wiring for the thermostat, the thermostat is the trigger for the time delay relay. Not sure what else to check on this. IF you want to try another expert please let me know, my goal is for you to be satisfied with my efforts.... Robert
Sorry.. I try my very best and it is a challenge online. My goal is for you to be satisfied with my efforts, I only get credit when you select a rating. IF you want a refund please let me know, I am fine in whatever you decide. Robert
I will request a refund for you, no need to select a rating, it is fine. Robert